Publicaciones del año 2025
Cantidad: 20
1.Occurrence and environmental risk assessment of pesticides in urban wastewater in Costa Rica
protocol (442 compounds) and to estimate environmental risk through hazard quotient (HQ) calculations, ecotoxicological assays and a prioritization approach to generate a local list of high-priority pesticides. In total, 29 pesticides were detected, mainly insecticides (55 %), dominated by neonicotinoids, pyrethroids and organophosphates. The most frequently detected compounds were diethyltoluamide (100 % of samples), imidacloprid (91 %), diuron (81 %), cypermethrin (81 %) and terbutryn (63 %). Considering HQ values, 17 compounds exhibited high environmental risk, the most hazardous being deltamethrin (HQ = 93750), diazinon (HQ = 6000), cinerin II (HQ = 1857), cyfluthrin (HQ = 743) and cypermethrin (HQ = 549). All influent and effluent samples were categorized as high risk (∑HQ ≥ 1). However, WWTPs with secondary treatment had a lower calculated ecotoxicological hazard in effluents. The prioritization criterion identified cypermethrin, diazinon, cinerin II, diuron and terbutryn as the top prime-concern pesticides (level of ecotoxicological risk = 3.6, 2.8, 2.7, 2.6 and 2.6 respectively). Ecotoxicological analyses revealed that Aliivibrio fischeri was the most vulnerable model organism, followed by Daphnia magna and Lactuca sativa. A significant decrease in the ecotoxicity to D. magna was observed when comparing influents to effluents, whereas A. fischeri exhibited only a slight decrease. Conversely, for L. sativa, some effluents showed higher toxicity. For specific WWTPs, ecotoxicity correlated well with organic matter content (R2 0.581–0.936). These findings provide critical data for regulatory authorities, identifying priority compounds from an ecotoxicological perspective, offering a case study for pesticide risk in urban wastewater in developing nations.
2.15N-Nitrogen Use Efficiency, Productivity, and Quality of Durum Wheat Integrating Nitrogen Management and an Indigenous Bacterial Inoculant in a Single Growing Season
Ayala-Zepeda, M., Parra-Cota, F.I., Chinchilla-Soto, C., De La Cruz-Torres, E., Ibba, M.I., Estrada-Alvarado, M.I., de los Santos-Villalobos, S., 2025. 15N-Nitrogen Use Efficiency, Productivity, and Quality of Durum Wheat Integrating Nitrogen Management and an Indigenous Bacterial Inoculant in a Single Growing Season. Applied Sciences (Switzerland) 15. https://doi.org/10.3390/app15031429
Abstract:In the Yaqui Valley, Mexico, the current and estimated annual growth rate of durum wheat (Triticum turgidum L. subsp. durum) yield is insufficient to satisfy the food demand that the world will be facing by 2050. Furthermore, besides the high doses of fertilizers applied to wheat in this region, nitrogen-use efficiency (NUE) remains low (<34.4%). A sustainable strategy to reduce the use of fertilizers and to increase crop yield and quality is the use of native plant growth-promoting bacteria as microbial inoculants. This study was performed under field conditions during one agricultural season in the Yaqui Valley, Mexico. It aimed to quantify the impact of the inoculation of a native bacterial consortium (BC) composed of Bacillus cabrialesii subsp. cabrialesii TE3T, Priestia megaterium TRQ8, and Bacillus paralicheniformis TRQ65 on grain yield, grain quality, and NUE (measured through 15N-isotopic techniques) at different stages of development of durum wheat variety CIRNO C2008 under three doses of urea (0, 120, and 240 kg N ha−1) fractionated at 30%, 60%, and 10%. Results showed that yield, quality, and NUE were highly affected by the N doses, while the inoculation of the BC had a lower impact on these parameters. Nevertheless, the inoculation of the BC on wheat had positive effects at the early stages of growth, on plant height (+1.6 cm), root depth (+11.9 cm), and spikes per square meter (+25 spikes m−2). Moreover, the addition of the BC improved N acquisition by the plants, at different crop growth stages, compared to uninoculated treatments. Finally, our results indicated that reducing the N dose from 240 kg of N ha−1 to 120 kg of N ha−1 improved the NUE (27.5% vs. 44.3%, respectively) of the crop. Hence, results of this preliminary study showed that the incorporation of bacterial inoculants into the wheat crop requires a simultaneous adequate N management, in order to obtain the desired positive effect on wheat productivity.
3.Adsorption–Desorption Behaviour of Imidacloprid, Thiamethoxam, and Clothianidin in Different Agricultural Soils2.15N-Nitrogen Use Efficiency, Productivity, and Quality of Durum
Briceño, G., Palma, G., Schalchli, H., Durán, P., Llafquén, C., Huenchupán, A., Rodríguez-Rodríguez, C., Diez, M.C., 2025. Adsorption–Desorption Behaviour of Imidacloprid, Thiamethoxam, and Clothianidin in Different Agricultural Soils. Agriculture 15, 1380. https://www.mdpi.com/2077-0472/15/13/1380#
Abstract:This study evaluated the adsorption and desorption of imidacloprid (IMI), thiamethoxam (THM) and clothianidin (CLO) in an andisol (Freire soil) and an inceptisol (Chufquén soil) from southern Chile with different organic matter and clay contents. The soils had a slightly acidic pH and clay and clay-loam textures. The tests were carried out at 20 °C with CaCl2 0.01 M as the electrolyte. Kinetic experiments were performed and isotherms were fitted to the pseudo-second-order, Elovich, Weber–Morris, Freundlich and Langmuir models. The kinetics were best described by the pseudo-second-order model (R2 > 0.99), indicating chemisorption; the rate was the highest for THM, although IMI and CLO achieved the highest retention
capacities. The Chufquén samples, with lower organic matter but 52% clay, exhibited the highest Kf and qm of up to 12.4 and 270 mg kg−1, respectively, while the Kd (2.3–6.9 L kg−1) and Koc (24–167 L kg−1) coefficients revealed a moderate leaching risk. THM was the most mobile compound due to its high solubility. Desorption was partially irreversible (H = 0.48–1.48), indicating persistence in soil. FTIR analysis confirmed the interaction with O-Al-O/O-O-Si-O groups without alterations in the mineral structure. In the soils examined in this study, the clay fraction and variable-charge minerals, rather than organic matter, were more closely associated with the adsorption behaviour of these NNIs.
4.Individual and mixture effect of selected high-hazard pharmaceuticals on aquatic primary producers
Montiel-Mora, J.R., Lizano-Fallas, V., Méndez-Rivera, M., Marín-González, A., Cambronero-Heinrichs, J.C., Rodríguez-Rodríguez, C.E., 2025. Individual and mixture effect of selected high-hazard pharmaceuticals on aquatic primary producers. Ecotoxicology. https://doi.org/10.1007/s10646-025-02885-w
Abstract: The extensive use of pharmaceuticals has led to their occurrence in surface waters due to insufficient treatment processes for their removal. Their environmental impact remains largely unexplored for certain trophic levels, particularly plants and algae. Pharmaceuticals often occur in mixtures with other pollutants, highlighting the need for comprehensive toxicological assessments that evaluate their combined interactions. This study evaluated the acute toxicity of four high-hazard pharmaceuticals -diphenhydramine, fluoxetine, ketoprofen, and trimethoprim- and their binary mixtures, on the green microalgae Raphidocelis subcapitata and the aquatic macrophyte Lemna gibba. For individual compounds, R. subcapitata growth rate was inhibited in all cases, with fluoxetine, ketoprofen and diphenhydramine exhibiting moderate toxicity (EC50 = 0.34, 0.14, and 4.88 mg/L, respectively), while trimethoprim showed low toxicity (EC50 = 332.35 mg/L). Similar trends were observed in L. gibba, except for diphenhydramine, which also showed low toxicity (EC50 = 26.57 mg/L). Binary mixtures demonstrated a synergistic interaction towards the microalgae in the presence of ketoprofen, except ketoprofen-trimethoprim combination (antagonism, p < 0.0001). In contrast, most interactions in L. gibba exhibited antagonism, except ketoprofen-fluoxetine (synergism, p = 0.0042). Differences were observed between the two model organisms for individual compounds and mixtures. No correlation was found between L. gibba experimental data and QSAR predictions derived from R. subcapitata. Our results highlight the need for: i. further studies including mixtures of relevant pharmaceuticals; ii. caution in the use of predictive models or extrapolation between taxa; and iii. the inclusion of fluoxetine and ketoprofen as priority compounds in future risk assessments.
5.Endocrine‑disrupting pesticide exposure relevant to reproductive health: a case study from Costa Rica
Apú, N., Rommes, F., Alvarado-Arias, M., Méndez-Rivera, M., Lizano-Fallas, V., 2025. Endocrine-disrupting pesticide exposure relevant to reproductive health: a case study from Costa Rica. Environ Monit Assess 197, 559. https://doi.org/10.1007/s10661-025-14011-8
Abstract: Global pesticide use has increased significantly over the past decade, leading to greater exposure to contaminants and associated health risks. Endocrine-disrupting pesticides have gained attention due to their strong association with human reproductive impairments and rising global infertility rates. In Costa Rica, studies have reported reduced fertility among agricultural workers and a higher prevalence of male infertility in regions with intensive pesticide use. However, the prioritization of pesticides detected in human fluids, based on their potential impact on reproductive health, has not been conducted. Here, analyzing human biomonitoring studies in the country over the last 25 years, 13 pesticides were identified and prioritized. Mancozeb ranked highest (14.8%), followed by dieldrin (12.1%) and chlorothalonil (12.0%). Eight criteria were used for prioritization, with non-carcinogenic risk, reported reproductive effects, and endocrine disruptor classification as key factors. This comprehensive approach highlights how multiple criteria collectively inform pesticide prioritization in relation to reproductive health risks. The findings indicated that while Costa Rica is a regional leader in pesticide biomonitoring, significant gaps remain, including limited data on unstudied pesticides and general population exposures. Establishing robust biomonitoring programs and public health surveillance systems to generate updated data and support evidence-based prevention policies is recommended. Additionally, the results of this study provide a valuable framework for guiding future research on the potential effects of pesticide mixtures.
6.Impact of urease inhibitor on greenhouse gas emissions and rice yield in a rainfed transplanting rice system in Costa Rica
Giraldo-Sanclemente, W., Pérez-Castillo, A.G., Monge-Muñoz, M., Chinchilla-Soto, C., Chavarría-Pérez, L., Alpízar-Marín, M., Zaman, M., 2025. Impact of urease inhibitor on greenhouse gas emissions and rice yield in a rainfed transplanting rice system in Costa Rica. Frontiers in Agronomy 7. https://doi.org/10.3389/fagro.2025.1518802
Abstract: Rice crop production intensification has become one of the most important sources of greenhouse gases. In rainfed rice production, urea is the most common nitrogen (N) fertilizer used in Costa Rica. Urea has low efficiency in crops, which is associated with high risk of N gaseous losses. The use of urea coated with the urease inhibitor NBPT has been identified as a mitigation strategy for ammonia losses. However, this can increase N input to the system, potentially leading to higher N2O and CH4 emissions in rice fields. In 2022, a rainfed rice transplanting trial was conducted on a tropical Inceptisol in Costa Rican Central Pacific region to analyze yield and quantify N2O and CH4 emissions. The plots of 6m x 6m, with an experimental design of five complete randomized blocks, were treated with three N-fertilization treatments: urea (U; 144 kg N ha−1), urea plus NBPT (UI; 144 kg N ha−1) and control plots (without N). Total N was splitted in four applications. The yield did not exhibit a significant difference (p>0.05) between U and UI treatments (U: 5.72 ± 0.97 t ha−1, and UI: 5.86 ± 1.12 t ha−1). There were no significant differences in yield-scaled N2O emissions (U: 4.4 ± 1.9 ug N2O-N kg−1rice, UI: 4.2 ± 1.9 ug N2O-N kg−1rice) or yield-scaled CH4 emissions (U: 0.32 ± 0.20 mg CH4 kg−1rice, UI: 0.33 16 ± 0.18 mg CH4 kg−1rice). Environmental factors and soil conditions such as temperature, pH, clay content, and specific cation exchange capacity could reduce the efficacy of NBPT. Under the experimental conditions, NBPT did not promote economic benefits, nor did it have an impact on greenhouse gas emissions.
7.Composición isotópica de la lluvia convectiva en los trópicos interiores de Brasil
Vinicius dos Santos , Didier Gastmans, Ana María Durán-Quesada , Ricardo Sánchez-Murillo , Kazimierz Rozanski , Oliver Kracht y Demilson de Assis Quintão. https://doi.org/10.5194/acp-24-6663-2024.
Abstract: Strong convective systems characterize the tropical central-southern region of Brazil. These systems provide abundant water supply for agroindustrial activities and pose flood risks to large cities. Here, we present high-frequency (2–10 min; inter- and intra-event) rainfall isotopic compositions (n = 90 samples) to reveal regional and local atmospheric processes controlling the isotopic variability of convective systems between 2019–2021. Inter-event rainfall weighted-average (δwgd) values were low (δ18Owgd ≤ −10.0 ‰) due to the higher rainfall along the Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) model trajectories from the Amazon forest during the summer. In contrast, during autumn and spring seasons HYSPLIT model trajectories from the Atlantic Ocean and southern Brazil exhibited lower rainfall amounts, resulting in high δ18Owgd ≥ −4.2 ‰. This strong regional δwgd pattern often masks intra-event isotopic variability. Therefore, we analyzed the vertical structure of local rainfall using reflectivity (Z) from microradar data. Variations in Z indicate that microphysical processes as raindrops fall led to changes in δ18O and deuterium excess (d-excess). Our findings establish a novel framework for evaluating the meteorological controls on the isotopic variability of convective precipitation in tropical South America, fill the gap in high-frequency studies in this region, and generate an isotopic dataset for convective model evaluations.
8.Soil protist diversity enhances prokaryotic diversity, and regulates dominant prokaryotes and the abundance of key nitrogen cycling genes
Marta E.Pérez-Villanueva Nawras Ghanen, Stephanie D. Jurburg , Antonis Chatzinotas. https://doi.org/10.1016/j.soilbio.2025.110014
Abstract: Soil protists play crucial roles in soil microbial food-webs by preying on bacteria and other microorganisms. However, the effect of protist diversity on soil prokaryotic communities remains poorly understood. This study aimed to elucidate how different protist diversity treatments affect the composition and functionality of soil prokaryotic communities. We established soil microcosms with increasingly complex protist communities, including a control without protists, a medium diversity treatment with three small bacterivorous protists, and a high diversity treatment with seven protists of diverse trophic styles and sizes. Over 21 days, we monitored changes in the prokaryotic community using 16S rRNA gene sequencing and assessed the effects on nitrifiers and denitrifiers by qPCR of nitrogen-cycling genes. Protist diversity explained 23 % of the observed prokaryotic community differentiation over time, with the high-diversity treatment causing the greatest divergence from the control. The most abundant prokaryotes were preferentially preyed upon in all protist treatments. Unexpectedly, the absolute abundance of the nirK gene, which is widely distributed among bacterial taxa and thus associated with high functional redundancy, decreased. The differential response of genes with lower distribution and redundancy, such as the bacterial and archaeal amoA and the Nitrospira-associated nxrB genes, to protist diversity indicated selective predation on archaea. High protist diversity systematically enhanced these effects compared to the medium diversity treatment. Overall, protist diversity was positively associated with prokaryotic diversity, which is crucial for maintaining ecosystem stability. These findings highlight the critical role of protist diversity and likely complementary predation in shaping soil prokaryotic communities and their functioning, and open up new avenues to explore how this role may differ across soil types.
9.Variabilidad de carbono en el suelo de un arrozal de Costa Rica
Roberto Aguirre-Elizondo, Mayela Monge-Muñoz, Ana Gabriela Pérez-Castillo,Melvin
Alpízar-Marín, Helber Guillen-Arroyo, Cristina Chinchilla-Soto. https://dialnet.unirioja.es/servlet/articulo?codigo=10388835
Abstract: Knowledge of the soil carbon stock (SCS) is vital for appropriate farming practices management,ie. tillage and to monitor SCS changes as mitigation strategies of carbon footprint. This study aims to quantify the variability and spatial distribution of the SCS. In an area of 1 ha 45 micro-pit (1 x 0.8 x 1 m) were divided into four strata. Vertical distribution of soil carbon was quantified along with other chemical and physical soil properties that affect rice production in Parrita, Costa Rica. A map of spatial prediction of the distribution and goodness-of-prediction values were calculated to estimate the effectiveness of the SCS prediction when different numbers of sampling points were used 45, 27, 15 and 7 microplots. As accurate measurements, the Mean Absolute Error and the
Mean Square Error were calculated. In this study, the SCS was 85.8 (±2.6) Mg Cha-1, into the total profile (0-100 cm), where the first 30 cm represented 46.2%. Prediction of the spatial distribution suggests that in annual agricultural crops, with tillage systems 15 sampling points ha-1 a can
effectively estimate the SCS.
10.Future Changes in the Contribution of Gulf of Mexico-Caribbean Sea Moisture Source: Impacts on Regional Precipitation Patterns
José C. Fernandez-Alvarez, Gleisis Alvarez-Socorro, Ana María Durán-Quesada, Raquel Nieto, Luis Gimeno. https://link.springer.com/article/10.1007/s41748-024-00532-8
Abstract: Central America (CA) and the eastern United States (US) is a region with a significant contribution from the Gulf of Mexico–Caribbean Sea (GM_CS) moisture source. In the context of climate change, sink patterns associated with this source may change implying significant changes in this region. Hence, this study determined future changes in the contributions to precipitation (PCs) associated with GM_CS. So, a dynamic downscaling methodology was considered using the regional climate model WRF-ARW and FLEXPART-WRF, forced with the CESM2 climate model. Specifically, a decrease in the GM_CS contribution in the CA region was projected for all seasons considered, showing a southward shift in the contribution pattern. Additionally, the sink pattern was projected to increase, but the area was projected to decrease, mainly by the end of the century, except in the autumn. In addition, for the southeastern US region, an increase in PCs in spring and autumn was projected for end-century, but a decrease in PCs by more than 40% in the summer months was projected. However, for the northeastern US, changes in PCs were amplified for both the mid- and end-century relative to the southeastern US region, with an increase projected for most periods, except for a slight decrease in the summer of 10%.
11.Humanitarian crisis in the Central American Drought Corridor | Central America | 2015 – 2016
Ana Maria Duran Quesada, Nelson Venegas Cordero. https://worlddroughtatlas.org/wp-content/uploads/2024/11/JRC_Global_Drought_Atlas_EN_screen_pages_printcover_reduced.pdf
Abstract:The Central American drought corridor is affected by highly variable rainfall patterns exacerbated by El Niño-Southern Oscillation (ENSO) conditions, frequently causing cumulative rainfall deficits with impacts on agriculture, energy production, and the wider socioeconomy of Guatemala, Honduras, El Salvador, Nicaragua, and Costa Rica.
12.The Organization of Tropical East Pacific Convection (OTREC) Field Campaign—Five Years Later
Željka Stone , David J. Raymond, Larissa Back, Peter Bechtold, Miguel Bernardez, Isabelle E. Bunge, Ana María Durán Quesada, Marcial Garbanzo Salas, Rebecca Haacker, Daniel Hernandez Deckers, Lidia Huaman, George N. Kiladis, Zhiming Kuang, Benjamin Lintner, Vijit Maithel, Eric Maloney, Julio C. Marín, Lorena Medina Luna, John Mejía, Melissa A. Piper, Germán Poveda, John Ristvey, Stipo Sentić, Yolande L. Serra, Adam Sobel, Giuseppe Torri, Justin Whitaker, Daniel W. Zietlow, and Manuel D. Zuluaga. https://journals.ametsoc.org/view/journals/bams/106/7/BAMS-D-24-0134.1.xml
Abstract: Studying convection, which is one of the least understood physical mechanisms in the tropical atmosphere, is very important for weather and climate predictions of extreme events such as storms, hurricanes, monsoons, floods, and hail. Collecting more observations to do so is critical. It is also a challenge. The Organization of Tropical East Pacific Convection (OTREC) field project took place in the summer of 2019. More than thirty scientists and twenty students from the United States, Costa Rica, Colombia, México, and the United Kingdom were involved in collecting observations over the ocean (east Pacific and Caribbean) and land (Costa Rica, Colombia). We used the NSF NCAR Gulfstream V airplane to fly at 13-km altitude sampling the tropical atmosphere under diverse weather conditions. The plane was flown in a “lawnmower” pattern and every 10 min deployed dropsondes that measured temperature, wind, humidity, and pressure from the flight level to the ocean. Similarly, over the land, we launched radiosondes, leveraged existing radars, and surface meteorological networks across the region, some with collocated global positioning system (GPS) receivers and rain sensors, and installed a new surface GPS meteorological network across Costa Rica, culminating in an impressive systematic dataset that when assimilated into weather models immediately gave better forecasts. We are now closer than ever in understanding the environmental conditions necessary for convection as well as how convection influences extreme events. The OTREC dataset continues to be studied by researchers all over the globe. This article aims to describe the lengthy process that precedes science breakthroughs.
13.Demystifying the art of isotope-enabled hydrological and climate modelling
Christian Birkela,, Jodie Millerc, Andrew Watsond, Duc Anh Trinhe, Ana Maria Durán-Quesadab, Ricardo Sanchez-Murillo, Chris Soulsbyg, Stefan Terzer-Wassmuthc, Dorthe Tetzlaffa, Stefan Uhlenbrooki, Yuliya Vystavnac, Kei Yoshimura. https://www.sciencedirect.com/science/article/pii/S0048969724084006
Abstract: Over the last 20 years, we have dramatically improved hydrometeorological data including isotopes, but are we making the most of this data? Stable isotopes of oxygen and hydrogen in the water molecule (stable water isotopes – SWI) are well known tracers of the global hydrological cycle producing critical climate science. Despite this, stable water isotopes are not explicitly included in influential climate reports (e.g. Intergovernmental Panel on Climate Change, IPCC) except for paleoclimate reconstructions. Continuous developments in modelling approaches have now made isotope-enabled modelling of climate and hydrology more powerful and easier to perform, reducing prediction uncertainty and providing more robust simulations. We argue that it is time to incorporate stable water isotopes and isotope-enabled modelling into mainstream hydroclimatic forecasting with the prospect of vastly improving climate change predictions and evidence.
Ricardo Sánchez-Murillo,Dimitris A. Herrera, Kegan K. Farrick, Germain Esquivel-Hernández, Rolando Sánchez-Gutiérrez, Javier Barberena-Moncada, Jorge Guatemala-Herrera, Yelba Flores-Meza Roberto Cerón-Pineda,Laura Gil-Urrutia, Jorge Cardona-Hernández Tania Peña-Paz,JuniorO. Hernández-Ortiz, Wendy Harrison-Smith, Geoffrey Marshall, Aurel Persoi, Juan Pérez-Quezadas, Miguel Mejía-González, Luis González-Hita,Marcia Barrera de Calderón Alejandro García-Moya, Debora Hernández, KristenWelsh, Rene M. Price, Diego A. Riveros-Iregui, Ny Riavo G. Voarintsoa, Joshua C. Bregy, Minerva Sánchez-Llull,Carlos Alonso-Hernández, Saúl Santos-García, Ana M. Durán-Quesada, Christian Birkel Jan Boll KimM. Cobb Adrián F.Obando-Amador Ingrid M. Vargas-Azofeifa, Doerthe Tetzlaff, Chris Soulsby, Sylvia G. Dee. https://nyaspubs.onlinelibrary.wiley.com/doi/full/10.1111/nyas.15274
Abstract: Tropical cyclones (TCs) are one of the major natural hazards to island and coastal communities and ecosystems. However, isotopic compositions of TC-derived precipitation (P) in surface water (SW) and groundwater (GW) reservoirs are still lacking. We tested the three main assumptions of the isotope storm “spike” hypothesis (sudden spikes in isotopic ratios). Our database covers 40 TCs and is divided into recent (N = 778; 2012–2023) and archived (N = 236; 1984–1995) rainfall isotope observations and SW/GW isotope monitoring (N = 6013; 2014–2023). Seasonal rainfall contribution from TCs ranged from less than 1% to over 54% (4% on average) between 1984 and 2023. Mean δ18O compositions across TCs domains were significantly lower than the regional (noncyclonic) δ18O mean (−5.24 ± 4.27‰): maritime (−6.29 ± 3.28‰), coastal (−7.78 ± 4.28‰), and inland (−9.80 ± 5.18‰) values. Coastal and maritime TC convection resulted in large rainfall amounts with high isotope compositions. This could bias past climate reconstructions toward unrealistic drier conditions. Significant δ18O and d-excess differences were found between storm intensities. P/SW and P/GW isotope ratios revealed the rapid propagation of TC excursions in freshwater systems. Our findings highlight the potential of TC isotope observations for diagnosing intensity and frequency in paleoproxies beyond idealized TC models.
15.Acute toxicity of frog-skin-homologous synthetic alkaloids and frog-skin extracts: miniaturized test to evaluate toxicity with Daphnia magna
Michael Méndez-Rivera ,Didier Ramírez-Morales, Abel Mora-Machado, Heike Pröhl, Ariel Rodríguez ,Victor Vásquez-Cháves, Vasiliki Mantzana-Oikonomaki ,Takuya Okada Naoki ToyookaRoberto Ibáñez ,Carlos E. Rodríguez-Rodríguez , Giselle Tamayo-Castillo. https://doi.org/10.1016/j.toxicon.2025.108599
Abstract: The determination of toxicity in samples from natural extracts or products of organic synthesis represents a challenge due to the low available volume of these kinds of matrices. A miniaturized immobilization acute test in Daphnia magna was implemented at microplate-scale to determine the relative toxicity in 13 synthetic alkaloids, analogous to those found in the skin of frogs, and skin-extracts from 18 individuals of the frog Oophaga vicentei. The test revealed moderate or moderate to low toxicity towards the daphnids for all tested synthetic alkaloids after a 48-h exposure. The correlation of relative toxicity and several parameters in frog samples revealed that: (i) toxicity is not associated with frog coloration (aposematism) or their geographical location; and (ii) toxicity is dependent on the profile of alkaloid composition rather than the total alkaloid content. Results from this work provide an alternative method to assay toxicity in limited-volume samples, useful to elucidate potential aposematic-related differences in dendrobatid frogs.
16.Removal of Myclobutanil and Detoxification in Modified Biomixtures: Fungal Bioaugmentation and Biochar Amendment
Paraskevas Parlakidis, Víctor Castro-Gutiérrez, Mario Masís-Mora,Zisis Vryzas, Carlos E. Rodríguez-Rodríguez. https://www.mdpi.com/2673-4079/6/4/40
Abstract: Biopurification systems are designed for the treatment of pesticide-containing agricultural wastewater; their biologically active matrix, the biomixture, can be modified to enhance the pesticide removal capacity. Two approaches, fungal bioaugmentation with Trametes versicolor and amendment with biochar, were applied for the potential improvement of biomixtures’ capacity to remediate myclobutanil-contaminated wastewater. The conventional biomixture (B) and its modifications, either bioaugmented with Trametes versicolor (biomixture BT) or supplemented with pineapple biochar (5% v/v) (biomixture BB), were spiked with myclobutanil at a very high concentration (10,000 mg/kg) to simulate extreme on-farm events such as the disposal or leakage of commercial formulations. The dissipation followed a bi-phasic behavior in every case. Both modifications of the conventional biomixture increased the dissipation rates, resulting in estimated DT50 values of 61.9 (BB) and >90 days (BT) compared to biomixture B (DT50 = 474 days). The assessment of biomixtures’ detoxification was carried out with two different bioindicators: a seed germination test in Lactuca sativa and an algal growth inhibition test. Some degree of detoxification was achieved for all biomixtures in both indicators, with the exception of the biochar-containing biomixture, which, despite showing the fastest myclobutanil dissipation, was unable to maintain a steady detoxification trend towards the algae over the course of the treatment, probably due to biochar adverse effects. This approach seems promising for removing persistent myclobutanil from agricultural wastewater and demonstrates the dissipation capacity of biomixtures at extremely high pesticide concentrations likely to take place at an on-farm level.
17.Litter Dynamics and Soil Carbon Stock in a Coffee Agroforestry System in Costa Rica
Monge-Muñoz, G. Soto-Muñoz, J. Chin-Pampillo, A.M. Durán-Quesada, M.V. Gutiérrez-Soto, M. Orozco-Aceves & C. Chinchilla-Soto. https://link.springer.com/article/10.1007/s42729-025-02410-2
Abstract:To obtain a more comprehensive perspective of carbon dynamics in coffee production, we studied carbon pools in litter and soil, as well as their interactions under contrasting management and variable annual precipitation, assessing their influence on soil carbon dynamics. We examined litter production and decomposition rates in two co-occurring plant species, Coffea arabica and Ocotea insularis, within a Costa Rican coffee production system. Comparisons were made between a full-sun monoculture coffee system (FSS) and an incipient agroforestry system (AFS) for two years with contrasting climate variability phases of El Niño-Southern Oscillation (ENSO) mode. Soil carbon stocks were quantified in both systems. Results showed greater soil carbon stocks in the FSS compared with the AFS. This result is shaped by factors such as land-use history, system age, soil type, shade tree species, and organic matter/litter input quantity and quality. Additionally, seasonal rainfall patterns impacted organic matter decomposition, with faster rates observed during the rainy season as compared with the dry season. The findings highlight the influence of rainfall variability on the characteristics and dynamics of soil carbon at sub-seasonal to interannual scales. This underscores the importance of advancing research into carbon stock analysis in dynamic systems experiencing variable rainfall patterns.
18.Investigación y uso del Biocarbón en Costa Rica
Gabriela Soto-Muñoz1/*, Juan Salvador Chin-Pampillo2, Karolina Villagra-Mendoza3, Cristina Chinchilla-Soto4. https://revistas.ucr.ac.cr//index.php/agrocost
Abstract:En los últimos 15 años, universidades, empresas privadas, ONG y cámaras de productores han realizado investigaciones en biocarbón en Costa Rica. Objetivo. Recopilar resultados observados en documentos técnicos (boletines y reportes) y científicos (artículos científicos y tesis) relacionados con el uso del biocarbón en Costa Rica Desarrollo. Se presentan diferentes diseños de hornos, predominando el horno de estañón a pequeña escala y temperaturas entre 400 y 600 °C. Las materias primas utilizadas para producir biocarbón son residuos de madera (Gmelina arborea, Cordia alliodora), leña de sistemas agroforestales de café y banano, bambú, rastrojo de caña de azúcar y pinzote de palma aceitera. El biocarbón se ha caracterizado mediante metodologías como análisis elemental, análisis proximal y contenido de nutrientes. Conclusiones. Se han observado resultados positivos en el desarrollo de los cultivos, específicamente en suelos ácidos (dosis entre 10 y 20 t ha-1) cultivados con palma aceitera y hortalizas. No se observaron incrementos significativos en el desarrollo de los cultivos con la aplicación de biocarbón en suelos altos en bases (Inceptisoles) o en suelos derivados de cenizas volcánicas (Andisoles) en cacao, palma aceitera y hortalizas. Se observaron mejoras significativas en la retención de agua con dosis de 30 t ha-1 en suelos arenosos, y una disminución significativa en la incidencia de Radophulus similis y Fusarium oxysporum en banano, con la adición de biocarbón y microorganismos endófitos. Se recomienda la elaboración de biocarbón a partir de subproductos agrícolas y su utilización en cultivos y zonas cercanas al sitio de elaboración para favorecer la bioeconomía circular. Líneas futuras de investigación deberían incluir: mejora en el diseño de los hornos para materiales como la fibra de palma aceitera; evaluación del impacto del biocarbón en la retención de agua, nutrientes y plaguicidas, y en la productividad de cultivos en suelos ácidos y arenosos.
19.Easterly Waves Across Central America During the Organization of Tropical East Pacific Convection (OTREC) Experiment
Serra, Y.L., Lintner, B.R., Durán-Quesada, A.M., Garbanzo-Salas, M., Hernández-Deckers, D. and Torri, G., 2025. Characterizing Tropical Easterly Waves across Central America during the Organization of Tropical East Pacific Convection (OTREC) Experiment. Journal of Climate, 38(22), pp.6559-6578. https://doi.org/10.1175/JCLI-D-25-0067.1
Abstract:The Organization of Tropical East Pacific Convection (OTREC) experiment took place from 5 August to 9 October 2019 in Costa Rica, with additional measurements collected in July and August of 2022. To observe the interaction of tropical easterly waves (TEWs) with the diurnal cycle over Central America and to assess the wave vertical structure over land, we installed a network of 15 global positioning system receivers with meteorological packages (GPS-Met), as well as two radiosonde sites, from the Caribbean to the Pacific coast. An outgoing longwave radiation (OLR)-based wave index indicates that 13 TEWs passed over the surface network during OTREC, with an additional 15 waves during 2022. The relative phasing of peak GPS column precipitable water vapor (PWV) with peak rainfall, together with vertical velocity and moisture profiles of wave active phases from reanalyses, suggests that isolated convective systems with lower-tropospheric heating and moisture evolve into more organized convective systems with elevated heating and moistening as the wave’s active phase progresses inland over Costa Rica. The signatures of propagation in rainfall, PWV, and cloud-top temperature are most pronounced for the active phase, with rain events observed to propagate westward across the network with about a 12-h lag from coast to coast. In contrast, local diurnal land–sea-breeze interactions with strong surface heating play an important role in the timing of convection during the suppressed phase.
20.Moisture sources and rainfall water stable isotopes during the recent triple-dip La Niña in coastal Argentina
Quiroz Londoño, O.M., Romanelli, A., Durán Quesada, A.M., Gómez Gutiérrez, J.D., Vélez Agudelo, C., Miglioranza, K., Kracht, O. and Martinez, D.E., 2025. Moisture sources and rainfall water stable isotopes during the recent triple-dip La Niña in coastal Argentina. Hydrological Sciences Journal, pp.1-17. https://doi.org/10.1080/02626667.2025.2497878
Abstract:This study explores the influence of meteorological conditions on the water stable isotopic composition of precipitation (δ18O and δ2H) and identifies key moisture sources in the South Atlantic Coastal Region of Argentina during the recent triple-dip La Niña (2020–2023). Using daily rainwater isotopes and HYSPLIT backtrajectory models, five primary sources were determined, with the Sub-tropical Atlantic (44%) as the dominant contributor. Isotopic signatures reveal significant variations in precipitation driven by La Niña’s impact on regional circulation. Unlike previous studies, results show minimal Amazon-sourced recycled moisture and a strong ENSO influence on oceanland moisture ratios. Daily sampling captured enriched isotopic signatures during this event and seasonal shifts in d-excess values. These findings enhance understanding of ENSO-driven hydrological variability and underscore the value of high-resolution sampling for assessing precipitation variability, with implications for groundwater recharge studies and drought resilience in this agriculturally important region.
Publicaciones del año 2024
Cantidad: 12
Rodríguez-Rodríguez, C.E., Ramírez-Morales, D., Gutiérrez-Quirós, J.A., Rodríguez-Saravia, S., Villegas-Solano, D., 2024. Occurrence of pharmaceuticals in Latin America: case study on hazard assessment and prioritization in Costa Rica. Environ Monit Assess 196, 739. https://doi.org/10.1007/s10661-024-12872-z
Abstract: Pharmaceuticals are considered as contaminants of emerging concern, and their occurrence in diverse environmental matrices has been described during the last 25 years. Nonetheless, pharmaceutical occurrence has not been evenly described worldwide, and reports from some geographical areas such as most parts of Latin America are scarce. This work aims to address the situation of water pollution due to pharmaceuticals in Latin America by means of two main goals: i. First, reviewing the monitoring studies performed in Latin America on this topic (period 2009—2024), which were conducted in Brazil, Mexico, Colombia, Ecuador, Peru and Argentina, to highlight the most frequently detected compounds from each therapeutic group in the region. ii. Second, analyzing the case of Costa Rica through the hazard assessment and prioritization of pharmaceuticals based on the monitoring performed in this country (years 2011; 2018—2019). The monitoring in Costa Rica comprised a total of 163 sampling points: wastewater treatment plants (WWTPs) (14 urban WWTPs plus two landfill WWTPs; total samples n = 44 influents and n = 34 effluents), nine hospital effluents (n = 32), wastewater from livestock farms (six swine farms and seven dairy farms; n = 23 influents and n = 37 effluents), 64 continental surface water sampling points (n = 137), and 61 coastal seawater sampling points (n = 61). Risk assessment of detected concentrations by the hazard quotient (HQ) approach (period 2018–2019) revealed a total of 25 medium or high-hazard compounds (out of 37 detected compounds). The prioritization approach (which included the Frequency of Appearance (FoA), the Frequency of PNEC exceedance (FoE), and the Extent of predicted no-effect concentration (PNEC) exceedance (EoE)), showed a critical list of nine pharmaceuticals: caffeine, diphenhydramine, acetaminophen, lovastatin, gemfibrozil, ciprofloxacin, ibuprofen, doxycycline and norfloxacin. These compounds should be taken into account as a first concern during the implementation of environmental policies related to pharmaceutical products in the region.
Pickering, L., Castro-Gutierrez, V., Holden, B., Haley, J., Jarvis, P., Campo, P., Hassard, F., 2024. How bioaugmentation for pesticide removal influences the microbial community in biologically active sand filters. Chemosphere 363, 142956. https://doi.org/10.1016/J.CHEMOSPHERE.2024.142956
Abstract: Removing pesticides from biological drinking water filters is challenging due to the difficulty in activating pesticide-degrading bacteria within the filters. Bioaugmented bacteria can alter the filter’s microbiome, affecting its performance either positively or negatively, depending on the bacteria used and their interaction with native microbes. We demonstrate that adding specific bacteria strains can effectively remove recalcitrant pesticides, like metaldehyde, yielding compliance to regulatory standards for an extended period. Our experiments revealed that the Sphingobium CMET-H strain was particularly effective, consistently reducing metaldehyde concentrations to levels within regulatory compliance, significantly outperforming Acinetobacter calcoaceticus E1. This success is attributed to the superior acclimation and distribution of the Sphingobium strain within the filter bed, facilitating more efficient interactions with and degradation of the pesticide, even when present at lower population densities compared to Acinetobacter calcoaceticus E1. Furthermore, our study demonstrates that the addition of pesticide-degrading strains significantly impacts the filter’s microbiome at various depths, despite these strains making up less than 1% of the total microbial community. The sequence in which these bacteria are introduced influences the system’s ability to degrade pesticides effectively. This research shows the potential of carefully selected and dosed bioaugmented bacteria to improve the pesticide removal capabilities of water filtration systems, while also highlighting the dynamics between bioaugmented and native microbial communities. Further investigation into optimizing bioaugmentation strategies is suggested to enhance the resilience and efficiency of drinking water treatment systems against pesticide contamination.
Genomic insights of a native bacterial consortium for wheat production sustainability
Ayala Zepeda, M., Valenzuela Ruiz, V., Parra Cota, F.I., Chinchilla-Soto, C., de la Cruz Torres, E., Ibba, M.I., Estrada Alvarado, M.I., de los Santos Villalobos, S., 2024. Genomic insights of a native bacterial consortium for wheat production sustainability. Curr Res Microb Sci 6, 100230. https://doi.org/10.1016/J.CRMICR.2024.100230
Abstract: The use of plant growth-promoting bacteria as bioinoculants is a powerful tool to increase crop yield and quality and to improve nitrogen use efficiency (NUE) from fertilizers in plants. This study aimed to bioprospecting a native bacterial consortium (Bacillus cabrialesii subsp. cabrialesii TE3T, Priestia megaterium TRQ8, and Bacillus paralicheniformis TRQ65), through bioinformatic analysis, and to quantify the impact of its inoculation on NUE (measured through 15N-isotopic techniques), grain yield, and grain quality of durum wheat variety CIRNO C2008 grown under three doses of urea (0, 120, and 240 kg N ha−1) during two consecutive agricultural cycles in the Yaqui Valley, Mexico. The inoculation of the bacterial consortium (BC) to the wheat crop, at a total N concentration of 123–225 kg N ha−1 increased crop productivity and maintained grain quality, resulting in a yield increase of 1.1 ton ha−1 (6.0 vs. 7.1 ton ha−1, 0 kg N ha−1 added, 123 kg N ha−1 in the soil) and of 2.0 ton ha−1 (5.9 vs. 7.9 ton ha−1, 120 kg N ha−1 added, 104 kg N ha−1 in the soil) compared to the uninoculated controls at the same doses of N. The genomic bioinformatic analysis of the studied strains showed a great number of biofertilization-related genes regarding N and Fe acquisition, P assimilation, CO2 fixation, Fe, P, and K solubilization, with important roles in agroecosystems, as well as genes related to the production of siderophores and stress response. A positive effect of the BC on NUE at the studied initial N content (123 and 104 kg N ha−1) was not observed. Nevertheless, increases of 14 % and 12.5 % on NUE (whole plant) were observed when 120 kg N ha−1 was applied compared to when wheat was fully fertilized (240 kg N ha−1). This work represents a link between bioinformatic approaches of a native bacterial inoculant and the quantification of its impact on durum wheat.
dos Santos, V., Gastmans, D., Durán-Quesada, A.M., Sánchez-Murillo, R., Rozanski, K., Kracht, O., de Assis Quintão, D., 2024. Isotopic composition of convective rainfall in the inland tropics of Brazil. Atmos Chem Phys 24, 6663–6680. https://doi.org/10.5194/acp-24-6663-2024
Loría Naranjo, M., Beita-Sandí, W., 2024. Índice biológico de lodos como bioindicador en dos sistemas de tratamiento de agua residual hospitalaria en Costa Rica. UNED Research Journal 16, e5334. https://doi.org/10.22458/urj.v16i1.5334
Lizano-Fallas, V., Carrasco del Amor, A., Cristobal, S., 2024. Predictive toxicology of chemical mixtures using proteome-wide thermal profiling and protein target properties. Chemosphere 364. https://doi.org/10.1016/j.chemosphere.2024.143228
Pérez-Castillo, A.G., Monge-Muñoz, M., Durán-Quesada, A.M. et al. (2024). Vegetation and Peat Soil Characteristics of a Fire-Impacted Tropical Peatland in Costa Rica. Wetlands 44, 41. https://doi.org/10.1007/s13157-024-01797-5
Abstract: Tropical peatlands are highly vulnerable to anthropogenic alterations. In Costa Rica, riverine peatlands are understudied, and most are not included in protected areas. This study aims to generating information useful to assess the anthropogenic pressure in a riverine peatland in Los Robles Sector (LRS) of Medio Queso Wetland (MQW) complex. Evaluations of impacts of fires on vegetation and surface peat chemistry, and the post-2021 fire, makeup of dominant vegetation changes with the Cyperaceae species Scleria melaleuca replacing Eleocharis interstincta as the dominant species are presented. The topsoil (0–20 cm) total C content was quantified as lower than 300 g kg−1 with no significant statistical differences in total C and N content between soil shortly after the fires or two years later. The species E. interstincta is observed to promote higher C stability during the dry season, and has a more recalcitrant composition of the root system compared to the post 2021-fire dominant S. melaleuca. To reduce the impact on C accumulation, measures to prevent grazing-originated fires, especially when the water table is low, are urgent. Hence, this work aims at proving information that can be a baseline for impacts assessment and to inform conservation measures and policies.
Red REMARCO: ciencia y comunicación en el abordaje de estresores marino-costeros
Brenes-Alfaro, L. y Carrasco-Palma, D. (2024). Red REMARCO: ciencia y comunicación en el abordaje de estresores marino-costeros. JCOM – América Latina 07 (01), N02. https://doi.org/10.22323/3.07010802
Resumen: Este artículo presenta la experiencia de trabajo colaborativo e interdisciplinario entre científicos y comunicadores, en el marco de la Red de Investigación de Estresores Marinos — Costeros en Latinoamérica y el Caribe (REMARCO), creada en el año 2018. Se reflexiona acerca de las acciones logradas desde su creación, y la dinámica establecida entre el grupo científico y el de comunicación. Se concluye que el trabajo colaborativo ha permitido que los científicos aprendan a realizar divulgación de los resultados de sus investigaciones, mientras los comunicadores adquieren conocimientos técnicos sobre la problemática de los estresores marino-costeros, logrando sinergias en beneficio de la divulgación científica; con puntos de mejora que deberán ser solventados en el futuro próximo.
Bergmann, D., Matarrita-Rodríguez, J., Abdulla, H. Toward a More Comprehensive Approach for Dissolved Organic Matter Chemical Characterization Using an Orbitrap Fusion Tribrid Mass Spectrometer Coupled with Ion and Liquid Chromatography Techniques. https://doi.org/10.1021/acs.analchem.3c02599
Abstract: Dissolved organic matter (DOM) represents one of the largest active organic carbon pools in the global carbon cycle. Although extensively studied, only <10% of DOM has been chemically characterized into individual dissolved compounds due to its molecular complexity. This study introduced a more comprehensive DOM characterization method by coupling both ion chromatography (IC) and liquid chromatography (LC) with high mass accuracy and resolution mass spectrometry. We presented a new on-the-fly mass calibration of the Orbitrap technique by utilizing the “lock mass” function in the Orbitrap Fusion Tribrid mass spectrometer (OT-FTMS), which assures high mass accuracy at every scan by a postcolumn introduction of internal labeled standards. With both IC and LC, tested unlabeled standards of amino acids, small peptides, and organic acids were consistently below 1.0 ppm mass error, giving the OT-FTMS the potential of reaching mass accuracy of the Fourier-transform ion cyclotron resonance mass spectrometer. In addition to mass accuracy, a pooled quality control sample (QC) was used to increase reproducibility by applying systematic error removal using random forest (SERRF). Using an untargeted mass spectrometry approach, estuarine DOM samples were analyzed by OT-FTMS coupled to IC in negative mode and LC in positive mode detection to cover a wide range of highly cationic to highly anionic molecules. As a proof of concept, we focused on elucidating the structures of three distinct DOM compound classes with varied acidities and basicities. In UPLC-OT-FTMS, a total of 915 compounds were detected. We putatively elucidated 44 small peptides and 33 deaminated peptides of these compounds. With IC-OT-FTMS, a total of 1432 compounds were detected. We putatively elucidated 20 peptides, 268 deaminated peptides, and 188 organic acids. Except for five compounds, all putatively elucidated compounds were uniquely detected in their corresponding chromatography technique. These results highlight the need for combining these two techniques to provide a more comprehensive method for DOM characterization. Application of the combined IC and LC techniques is not limited to DOM chemical characterization. It can analyze other complex compound mixtures, such as metabolites, and anthropogenic pollutants, such as pesticides and endocrine-disrupting chemicals, in environmental and biological samples.
Ramírez-Morales, D., Masís-Mora, M., Montiel-Mora, J. R., Méndez-Rivera, M., Gutiérrez-Quirós, J. A., Brenes-Alfaro, L., & Rodríguez-Rodríguez, C. E. Pharmaceuticals, hazard and ecotoxicity in surface and wastewater in a tropical dairy production area in Latin America. Chemosphere, 346, 140443. (2024). https://doi.org/10.1016/j.chemosphere.2023.140443
Absract: Pharmaceuticals comprise a complex group of emerging pollutants. Despite the significant number of pharmaceuticals used in veterinary medicine, the input of these compounds into the environment due to livestock activities has been scarcely described. This work assays for the first time in Central America the occurrence of pharmaceuticals in farm wastewater in an area devoted to dairy production, and in the surrounding surface waters. Among 69 monitored pharmaceuticals, a total of eight compounds were detected in wastewater samples collected from seven dairy farms after three sampling campaigns. Six pharmaceuticals were considered either of high (albendazole, lovastatin and caffeine) or intermediate estimated hazard (ciprofloxacin, acetaminophen and ketoprofen) based on the HQ approach, while 26% of the samples were considered of high estimated hazard according to the cumulative ∑HQ approach. Similarly, when ecotoxicological tests were applied, all the samples showed some level of toxicity towards Daphnia magna, and most samples towards Vibrio fischeri and Lactuca sativa. Fourteen pharmaceuticals were detected in surface water samples collected in the surroundings of the dairy production farms, including rural and urban areas. Seven out of these compounds showed high estimated risk (risperidone, diphenhydramine, trimethoprim, fluoxetine, ofloxacin, caffeine and ibuprofen), while three (gemfibrozil, ciprofloxacin and cephalexin) exhibited intermediate estimated risk. In a similar worrisome way, 27% of these samples were estimated to pose high environmental risk according to the pharmaceutical content. Despite being nontoxic for D. magna or V. fischeri, frequent inhibition (>20%) of GI in L. sativa was determined in 34% of surface water samples; such findings raise concern on the apparent inceptive environmental pollution and risk within the area. According to the pharmaceutical content patterns in both kinds of studied matrices, no clear evidence of significant contamination in surface water due to livestock activities could be retrieved, suggesting a main role of urban influence.
Erwiniaceae bacteria play defensive and nutritional roles in two widespread ambrosia beetles
Cambronero-Heinrichs, J. C., Battisti, A., Biedermann, P. H., Cavaletto, G., Castro-Gutierrez, V., Favaro, L., Santoiemma, G., Rassati, D. Erwiniaceae bacteria play defensive and nutritional roles in two widespread ambrosia beetles. FEMS Microbiology Ecology, 99(12), fiad144. (2023). https://doi.org/10.1093/femsec/fiad144
Lizano-Fallas, V., Carrasco del Amor, A., Cristobal, S. Prediction of Molecular Initiating Events for Adverse Outcome Pathways Using High-Throughput Identification of Chemical Targets. Toxics 2023, 11, 189. https://doi.org/10.3390/toxics11020189
Berlin, E., Lizano-Fallas, V., Carrasco del Amor, A., Fresnedo, O., Cristobal, S. Nonionic Surfactants Can Modify the Thermal Stability of Globular and Membrane Proteins Interfering with the Thermal Proteome Profiling Principles to Identify Protein Targets. Anal. Chem. 2023, 95, 4033– 4042. https://pubs.acs.org/doi/10.1021/acs.analchem.2c04500
Méndez-Rivera, M., Montiel-Mora, J.R., Ramírez-Morales, D. et al. On-farm Occurrence of Pharmaceuticals and Their Environmental Hazard: Case Study of a Tropical Dairy farm. Bull Environ Contam Toxicol 111, 51 (2023). https://doi.org/10.1007/s00128-023-03809-2
On-Farm Removal of Pesticides: Current Insights on Biopurification Systems
Rodríguez-Rodríguez, C.E., Rodríguez-Saravia, S. 2023. On-farm removal of pesticides: current insights on biopurification systems. Sci. Technol. 3, 601-615. DOI: 10.1021/acsagscitech.2c00337
Occurrence and risk assessment of pharmaceuticals in hospital wastewater in Costa Rica
Rodríguez-Rodríguez, C.E., Ramírez-Morales, D., Masis-Mora, M., Montiel-Mora, J.R., Soto-Garita, C., Araya-Valverde, E., Cambronero-Heinrichs, J.C., Sànchez-Melsió, A., Briceño-Guevara, S., Mendez-Rivera, M., Balcázar, J.L. 2023. Occurrence and risk assessment of pharmaceuticals in hospital effluents in Costa Rica. Chemosphere, 339, 10.1016/j.chemosphere.2023.139746
Wastewater-based epidemiology for surveillance of infectious diseases in healthcare settings
Hassard, F., Bajón-Fernández, Y., Castro-Gutierrez, V. 2023. Wastewater-based epidemiology for surveillance of infectious diseases in healthcare settings. Current opinion in infectious diseases. 36(4):p 288-295, August 2023. https://doi.org/10.1371/journal.pone.0286259
Hassard, F., Vu, M., Rahimzadeh, S., Castro-Gutierrez, V., Stanton, I., et. al. 2023. Wastewater monitoring for detection of public health markers during the COVID-19 pandemic: Near-source monitoring of schools in England over an academic year. Plos one, 18(5), e0286259.
Ecotoxicity of pesticide formulations and their mixtures: the case of potato crops in Costa Rica
Méndez-Rivera, M., Ramírez-Morales, D., Montiel-Mora, J.R. et al. Ecotoxicity of pesticide formulations and their mixtures: the case of potato crops in Costa Rica. Ecotoxicology 32, 383–393 (2023). https://doi.org/10.1007/s10646-023-02648-5
Single and mixture toxicity of selected pharmaceuticals to the aquatic macrophyte Lemna minor
Ramírez-Morales, D., Fajardo-Romero, D., Rodríguez-Rodríguez, C. E., & Cedergreen, N. (2022). Single and mixture toxicity of selected pharmaceuticals to the aquatic macrophyte Lemna minor. Ecotoxicology, 1-11. DOI:
Rodríguez-Rodríguez, C. E., Cambronero-Heinrichs, J. C., Castro-Gutiérrez, V., & Tortella, G. R. (2021). Biopurification Systems: Current Advances and Future Prospects of On-Farm Biodegradation of Pesticides. Pesticides in Soils: Occurrence, Fate, Control and Remediation, 287-315. DOI: 10.1007/698_2021_798
Dayatri Vanessa Bolaños Picado, D.V., Mario Masis Mora, M., Duran Herrera, E., Pérez Mercado, L.F., López Vinent, N., Cruz Alcalde. A., Alvarez Caero, M.M., Rodríguez Rodríguez, C.E., Sans Mazón, C. Use of organic fertilizers in solar photo-Fenton process as potential technology to remove pineapple processing wastewater in Costa Rica [version 1; peer review: 1 approved]. Open Res Europe 2022, 2:105. DOI: 10.12688/openreseurope.14997.1
Salazar, Osvaldo; Chinchilla-Soto, Cristina; de los Santos-Villalobos, Sergio; Ayala, Marisol; Benavides, Luciano; Berriel, Verónica; Cardoso, Renan; Chavarrí, Eduardo; Meigikos dos Anjos, Roberto; González, Alba Liz; Nario, Adriana; Samudio, Antonio; Villarreal, José; Sibello-Hernández, Rita; Govan, Joseph; Heng, Lee (2022). Water consumption by agriculture in Latin America and the Caribbean: impact of climate change and applications of nuclear and isotopic techniques.Int. J. Agric. Nat. Resour.49(1):14-20. DOI: 10.7764/ijanr.v49i1.2342
Chinchilla‑Soto, C; Alfaro, M. A.; Bertsch, F.; Perez‑Castillo, A. G. (2022). Contrasting Effects of Nitrogen and Labile Carbon Addition on N2O Emissions from Andosols in Costa Rica and Chile Under Controlled Conditions. Journal of Soil Science and Plant Nutrition 22, pages3625–3635. DOI:10.1007/s42729-022-00915-8
Castro-Gutiérrez, V.M., Fuller, E., Garcillán-Barcia, M.P., Helgason, T., Hassard, F., Moir, J.W. (2022). Dissemination of metaldehyde catabolic pathways is driven by mobile genetic elements in Proteobacteria. Microbial Genomics, 2022;8:000881
Brenes-Guillén, L., Vidaurre-Barahona, D., Avilés-Vargas, L., Castro-Gutierrez, V., Gómez-Ramírez, E., Gónzalez-Sánchez, K., Mora-López, M., Umaña-Villalobos, G., Uribe-Lorío, L. & Hassard, F. (2022). First insights into the prokaryotic community structure of Lake Cote, Costa Rica: influence on nutrient cycling. Frontiers in Microbiology, 13:941897. doi: 10.3389/fmicb.2022.941897
Effects of the insecticide β-endosulfan on tadpoles of Isthmohyla pseudopuma (Anura: Hylidae)
Méndez-Rivera, Michael; Mena, Freylan; Pinnock-Branford, Margaret; Ruepert, Clemens; Barquero, Marco D.; Jiménez, Randall R.; Alvarado, Gilbert. (2022). Effects of the insecticide β-endosulfan on tadpoles of Isthmohyla pseudopuma (Anura: Hylidae). Aquatic Toxicology, Vol 250. https://doi.org/10.1016/j.aquatox.2022.106231
Marta E. Pérez-Villanueva, Mario Masís-Mora, Emanuel Araya-Valverde, Carlos E. Rodríguez-Rodríguez. (2022). Fast removal and detoxification of oxytetracycline, triazine and organophosphate pesticides in a biopurification system, Biocatalysis and Agricultural Biotechnology, 44. https://doi.org/10.1016/j.bcab.2022.102452
Parlakidis, P.; Rodriguez, M.S.; Gikas, G.D.; Alexoudis, C.; Perez‐Rojas, G.; Perez‐Villanueva, M.; Carrera, A.P.; Fernández‐Cirelli, A.; Vryzas, Z. Occurrence of Banned and Currently Used Herbicides, in Groundwater of Northern Greece: A Human Health Risk Assessment Approach. Int. J. Environ. Res. Public Health 2022, 19, 8877. https://doi.org/10.3390/ijerph19148877
Monitoring occurrence of SARS-CoV-2 in school populations: A wastewater-based approach
Escudero-Leyva, Efraín; Alfaro-Vargas, Pamela; Muñoz-Arrieta, Rodrigo; Charpentier-Alfaro, Camila; Granados-Montero, María del Milagro; Valverde-Madrigal, Katherine S.; Pérez-Villanueva, Marta; Méndez-Rivera, Michael; Rodríguez-Rodríguez, Carlos E.; Chaverri; Priscila; Mora-Villalobos. J. Aníbal. (2022). Tolerance and Biological Removal of Fungicides by Trichoderma Species Isolated From the Endosphere of Wild Rubiaceae Plants. Front. Agron. 3:772170. doi: 10.3389/fagro.2021.772170
First evidence for an aposematic function of a very common color pattern in small insects
Pérez-Castillo, A. G., Arrieta-Méndez, J., Elizondo-Salazar, J. A., Monge-Muñoz, M., Zaman, M., & Cobeña, A. S. (2021). Using the nitrification inhibitor nitrapyrin in dairy farm effluents does not improve yield-scaled nitrous oxide and ammonia emissions but reduces methane flux. Frontiers in Sustainable Food Systems, 5, 47.
Using Molecular Methods to Identify and Monitor Xenobiotic-Degrading Genes for Bioremediation.
Sorption Parameters of Carbendazim and Iprodione in the Presence of Copper Nanoparticles in Two Different Soils
Tortella, G. R., Rubilar, O., Cea, M., Rodríguez-Rodríguez, C., Seguel, A., & Parada, J. (2019). Sorption Parameters of Carbendazim and Iprodione in the Presence of Copper Nanoparticles in Two Different Soils. Journal of Soil Science and Plant Nutrition, 1-8.
Chapter 7 – Removal of Emerging Pollutants by Fungi Elimination of Antibiotics
Rodriguez-Rodriguez, C. E., Cambronero-Heinrichs, J. C., Beita-Sandí, W., y Durán, J. E. (2019). Removal of Emerging Pollutants by Fungi Elimination of Antibiotics. En Campocosio, A. T., & Santiesteban, H. H. L. (2019). Fungal Bioremediation: Fundamentals and Applications (pp.). CRC Press.
Release of Nitrosamines and Nitrosamine Precursors from Scrap Tires
Beita-Sandí, W., Selbes, M., Ersan, M. S., & Karanfil, T. (2019). Release of Nitrosamines and Nitrosamine Precursors from Scrap Tires. Environmental Science & Technology Letters.
Cambronero-Heinrichs, J. C., Matarrita-Carranza, B., Murillo-Cruz, C., Araya-Valverde, E., Chavarría, M., & Pinto-Tomás, A. A. (2019). Phylogenetic analyses of antibiotic-producing Streptomyces sp. isolates obtained from the stingless-bee Tetragonisca angustula (Apidae: Meliponini). Microbiology (Reading, England). doi: 10.1099/mic.0.000754
J.Parada; O, Rubilar; M.C, Diez; M, Cea; A, Sant’Ana da Silva; C.E, Rodríguez-Rodríguezg; G.R,Tortella. 2019. Combined pollution of copper nanoparticles and atrazine in soil: Effects on dissipation of the pesticide and on microbiological community profiles. Journal of Hazardous Materials. 361: 228-236
Chapter 10 – Quality Control Measures in the Analytical Laboratory
Ruiz-Hidalgo, K., Muñoz-Rivera, A., Chinchilla-Soto, C., & Chin-Pampillo, J. (2018). Quality Control Measures in the Analytical Laboratory. In Integrated Analytical Approaches for Pesticide Management (pp. 149-163). Academic Press.
Enterococci as a key parameter for water quality index: Purires River, Costa Rica.
Chacón, L., Arias, V., Barrantes, K., Beita-Sandí, W.; Reyes, L., Achí, R. 2018. Enterococci as a key parameter for water quality index: Purires River, Costa Rica. Journal of Water and Health. (2018).
Beita-Sandí, W; Selbes, M; Kim, D; Karanfil, T. 2018. Removal of N-nitrosodimethylamine precursors by cation exchange resin: The effects of pH and calcium. Chemosphere. 211:1091-1097
Rodríguez‐Castillo, G; Molina‐Rodríguez, M; Pérez‐Villanueva, M; Masís‐Mora, M; Rodríguez‐Rodríguez, C.E. 2018. Removal of Two Neonicotinoid Insecticides and Mineralization of 14 C-Imidacloprid in Biomixtures Bulletin of Environmental Contamination and Toxicology. 101(1):137-143
Carazo-Rojas, E; Peréz-Rojas, G; Pérez-Villanueva, M; Chinchilla-Soto, C; Chin-Pampillo J.S; Aguilar-Mora, P; Alpízar-Marín, M; Masís-Mora, M Rodríguez-Rodríguez,C.E, Vryzas, Z. 2018. Pesticide monitoring and ecotoxicological risk assessment in surface water bodies and sediments of a tropical agro-ecosystem. Environmental Pollution. 241 :800-809
Castro-Gutiérrez, V., Masís-Mora, M., Carazo-Rojas, Mora-López, M; Rodríguez-Rodríguez,C.E. Impact of oxytetracycline and bacterial bioaugmentation on the efficiency and microbial community structure of a pesticide-degrading biomixture. 2018. Environmental Science and Pollution Research 25: 11787.
The role of chloramine species in NDMA formation.
Selbes M; Beita-Sandí W; Kim D; Tanju Karanfil T. 2018. The role of chloramine species in NDMA formation. Water Research. Volume 140 :100-109
Mycoremediation: Fungal mediated processes for the elimination of organic pollutants.
Rodríguez-Rodríguez, C.E., Castro-Gutiérrez, V., Tortella, G. 2018. Mycoremediation: Fungal mediated processes for the elimination of organic pollutants. In: M.S. Fuentes, V.L. Colin and J.M Saez (eds). Strategies for bioremediation of organic and inorganic pollutants. CRC Press/Taylor & Francis Group, Avingdon, UK.
Tortella F, G., Briceño, G, Rodríguez-Rodríguez, C.E., Cuozzo, S., Rubilar, O. 2018. Pesticides in the environment: Biobed systems as an innovative biotechnological tool to minimize pollution. In: M.S. Fuentes, V.L. Colin and J.M Saez (eds). Strategies for bioremediation of organic and inorganic pollutants. CRC Press/Taylor & Francis Group, Avingdon, UK.
Cambronero-Heinrichs JC; Masís-Mora M; Quirós-Fournier JP; Lizano-Fallas V; Mata-Araya I; Rodríguez-Rodríguez C.E. 2018. Removal of herbicides in a biopurification system is not negatively affected by oxytetracycline or fungally pretreated oxytetracycline. Chemosphere :198-203
Gikas, G; Pérez-Villanueva, M; Tsioras, M; Alexoudis, C; Pérez-Rojas, G; Masís-Mora, M; Lizano-Fallas, V; Rodríguez-Rodríguez, C.E; Vryzas, Z; Tsihrintzis, V, A.2018. Low-cost approaches for the removal of terbuthylazine from agricultural wastewater: Constructed wetlands and biopurification system. Chemical Engineering Journal. 335 :647–656
Jiménez-Gamboa,D; Castro-Gutiérrez,V; Fernández-Fernández, E; Briceño-Guevara, S; Masís-Mora, M; Chin-Pampillo, J. S; M. Mora-López; E. Carazo-Rojas; Rodríguez-Rodríguez, C. E. 2018. Expanding the application scope of on-farm biopurification systems: Effect and removal of oxytetracycline in a biomixture. Journal of Hazardous Materials. 342: 553-560.
Rodríguez-Rodríguez, C.E., Castro-Gutiérrez, V., Lizano-Fallas, V. 2017. Alternative approaches to determine the efficiency of a biomixture used for pesticide degradation in biopurification systems. In: E.D. Bidoia and R.N. Montagnolli (eds). Toxicity and Biodegradation Testing, Methods in Pharmacology and Toxicology. Springer Science+Business Media LLC, Berlin. DOI: 10.1007/978-1-4939-7425-2_3
Murillo-Zamora, S; Castro-Gutierrez, V; Masís-Mora,M; Lizano-Fallas, V; Rodríguez-Rodríguez, C.E. 2017. Elimination of fungicides in biopurification systems: Effect of fungal bioaugmentation on removal performance and microbial community structure. Chemosphere. 186: 625-634.
Beita-Sandí, W; Karanfil, T. 2017. Removal of both N-nitrosodimethylamine and trihalomethanes precursors in a single treatment using ion exchange resins. Water Research. 124: 20-28.
Lizano-Fallas, V; Masís-Mora, M; Espinoza-Villalobos, D; Lizano-Brenes, M; Rodríguez-Rodríguez, C.E. 2017. Removal of pesticides and ecotoxicological changes during thesimultaneous treatment of triazines and chlorpyrifos in biomixtures. Chemosphere. 182: 106-113
Castillo-González, H; Pérez-Villanueva, M; Masís-Mora, M; Castro-Gutiérrez, V; Rodríguez-Rodríguez, C.E. 2017. Antibiotics do not affect the degradation of fungicides and enhance the mineralization of chlorpyrifos in biomixtures. Ecotoxicology and Environmental Safety. 139: 481– 487
Huete-Soto, A; Masís-Mora, M; Lizano-Fallas, V; Chin-Pampillo, J.S; Carazo-Rojas, E; Rodríguez-Rodríguez, C.E. 2017. Simultaneous removal of structurally different pesticides in abiomixture: Detoxification and effect of oxytetracycline. Chemosphere. 169: 558-567
Aging of biomixtures: Effects on carbofuran removal and microbialcommunity structure.
Castro-Gutierrez, V; Masís-Mora, M; Diez, M.C; Tortella, G. R; Rodríguez-Rodríguez, C.E. 2017. Aging of biomixtures: Effects on carbofuran removal and microbial community structure. Chemosphere. 168: 418-425
Rodríguez-Rodríguez, C.E; Madrigal-León, K; Masís-Mora, M; Pérez-Villanueva, M; Chin-Pampillo J.S. 2017. Removal of carbamates and detoxification potential in a biomixture: Fungal crbioaugmentation versus traditional use. Ecotoxicology and Environmental Safety. 135: 252–258
Castro-Gutiérrez V; Masís-Mora M; Caminal G, Vicent T; Carazo-Rojas E, Mora-López M; Rodríguez-Rodríguez C.E. 2016. A microbial consortium from a biomixture swiftly degrades highconcentrations of carbofuran in fluidized-bed reactors. Process Biochemistry. 51: 1585–1593
Huete-Soto, A; Castillo-González, H; Masís-Mora, M; Chin-Pampillo, J.S Rodríguez-Rodríguez, C.E. 2017. Effects of oxytetracycline on the performance and activity ofbiomixtures: Removal of herbicides and mineralization of chlorpyrifos. Journal of Hazardous Materials. 321: 11–8
Chin-Pampillo, J.S; Masís-Mora, M; Ruiz-Hidalgo, K; Carazo-Rojas, E; Rodríguez-Rodríguez, C.E. 2016. Removal of carbofuran is not affected by co-application of chlorpyrifos in a coconut fiber/compost based biomixtureafter aging or pre-exposure. Journal of Environmental Sciences 46: 182–189
Krasner, S; Fen, Lee T.C; Westerhoff, P; Fischer, N; Hanigan, D; Karanfil, T; Beita-Sandí, W; Taylor-Edmonds, L; Andrews, R. 2016. Granular Activated Carbon Treatment May Result in Higher Predicted Genotoxicity in the Presence of Bromide Environmental Science and Technology :1-31
Han,L; Matarrita, J; Sapozhnikova, Y; Lehotay, S. J. 2016. Evaluation of a recent product to remove lipids and other matrix co-extractives in the analysis of pesticide residues and environmental contaminants in foods. Journal of Chromatography. 1449(3): 17–29
Removal of N-nitrosodimethylamine precursors with powdered activated carbon adsorption.
Beita-Sandí, W; Selim Ersan, M; Uzun, H; Karanfil, T .2016. Removal of N-nitrosodimethylamine precursors with powdered activated carbon adsorption. Water Research. 88: 711-718
Influence of rice field agrochemicals on the ecological status of a tropical stream.
Rasmussen, J.J; Reiler, E.M; Carazo, E; Matarrita,J; Muñoz,A; Cedergreenb,N. 2016. Influence of rice field agrochemicals on the ecological status of a tropical stream. Science of the Total Environment. 542, Part A, 15:12–21.
Schrübbers, L.C; Masís Mora, M; Carazo Rojas, E; Valverde, B; Christensen, J; Cedergreen, N. 2016. Analysis of glyphosate and aminomethylphosphonic acid in leaves from Coffea arabica using high performance liquid chromatography with quadrupole mass spectrometry detection.Talanta. 146, (1): 609–620.
Metals in coastal mollusks of Costa Rica.
Vargas, J.A; Acuña-González, J; Gómez, E; Molina, J.2016. Metals in coastal mollusks of Costa Rica. Biologia Tropical. 63 (4): 1007-1019.
Ecotoxicological analysis during the removal of carbofuran in fungal bioaugmented matrices.
Ruíz-Hidalgo, K; Masís-Mora, M; Barbieri , E; Carazo-Rojas, E; Rodríguez-Rodríguez, C.E. 2016. Ecotoxicological analysis during the removal of carbofuran in fungal bioaugmented matrices. Chemosphere. 144: 864–871.
Ruiz-Hidalgo, K; Chin-Pampillo, J .S; Masís-Mora, M; Carazo-Rojas, E; Rodríguez-Rodríguez, C.E.2016.Optimization of a Fungally Bioaugmented Biomixture for Carbofuran Removal in On-Farm Biopurification Systems.Water, Air, & Soil Pollution.no.11270 :227-3.
Chin-Pampillo, J.S; Ruiz-Hidalgo, K; Masís-Mora, M; Carazo-Rojas, E; Rodríguez-Rodríguez,C.E. 2015. Adaptation of biomixtures for carbofuran degradation in on-farm biopurification systems in tropical regions. Environmental Science and Pollution Research. 22: 9839–9848.
Vilaplana M; Rodríguez-Rodríguez, C.E; Barón E; Gorga M; Sarrà M; Caminal G; Eljarrat, E Barceló, D. 2015. Biodegradation of polybrominated diphenyl ethers in liquid media and sewage sludge by Trametes versicolor.Int. J. Environ. Res. 9(1): 273-280,
Chin-Pampillo, J.S; Ruiz-Hidalgo, K; Masís-Mora, M; Carazo-Rojas, E; Rodríguez-Rodríguez, C.E. 2015. Design of an optimized biomixture for the degradation of carbofuran based on pesticide removal and toxicity reduction of the matrix. Environmental Science and Pollution Research. 22(23): 19184–19193
Zoonotic Species of the Genus Arcobacter in Poultry from Different Regions of Costa Rica
Valverde Bogantes, E; Fallas-Padilla, K.L; Rodriguez-Rodriguez, C.E; Fernandez Jaramillo, E; Arias Echandi, M.L. 2015. Zoonotic Species of the Genus Arcobacter in Poultry from Different Regions of Costa Rica. Journal of Food Protection. 78(4): 808–811
Madrigal-Zúñiga, K; Ruiz-Hidalgo, K; Chin-Pampillo, J.S; Masís-Mora, M; Castro-Gutiérrez, V; Rodríguez-Rodríguez, C.E. 2015. Fungal bioaugmentation of two rice husk-based biomixturesfor the removal of carbofuran in on-farm biopurification systems. Biol Fertil Soils 52(2): 243–250
Degradation of selected agrochemicals by the white-rot fungus Trametes versicolor
Mir-Tutusaus J.A; Masís-Mora M; Corcellas C; Eljarrat, E; Barceló, D; Sarrà, M; Caminal G; Vicent, T; Rodríguez-Rodríguez C.E. 2014. Degradation of selected agrochemicals by the white-rot fungus Trametes versicolor Sci. Total Environ. 500-501 :235-242.
Vilaplana, M ; Rodríguez-Rodríguez, C.E. ; Barón, E; Gorga, M; Sarrà, M; Caminal, G; Eljarrat, E; Barceló, X. 2014. Biodegradation of polybrominated diphenyl ethers in liquid media and sewage sludge by Trametes versicolor Int. J. Environ. Res. 9: 273-280.
Ruiz-Hidalgo, K; Chin-Pampillo, J.S., Masís-Mora, M., Carazo R, E., Rodríguez-Rodríguez, C.E. 2014. 2014. Degradation of carbofuran by Trametes versicolor in rice husk as a potential lignocellulosic substrate for biomixtures: from mineralization to toxicity reduction. Process Biochemistry. 49(12) :2266–2271
Rojas, J; Rodríguez-Rodríguez, C.E; Pérez, C; Chaves, C; Arias, M.L. 2014. Presencia de los genes de toxigenicidad nheA, nheB y nheC a partir de cepas de Bacillus cereus aisladas de leches deshidratadas en Costa Rica. Archivos Latinoamericanos de Nutrición. 64.3 :192.
Accelerated biodegradation of selected nematicides in tropical crop soils from Costa Rica
Chin-Pampillo, J.S., Carazo-Rojas, E., Pérez-Rojas, G., Castro-Gutiérrez, V., Rodríguez-Rodríguez, C.E. 2014. 2014. Accelerated biodegradation of selected nematicides in tropical crop soils from Costa Rica Environmental Science and Pollution Research. 22( 2) :1240–1249.
Rodríguez-Rodríguez, C.E., Lucas, D., Barón, E., Gago-Ferrero, P., Molins-Delgado, D., Rodríguez-Mozaz, S., Eljarrat, E., Díaz-Cruz, M.S., Barceló, D. Caminal, G., Vicent, T. 2014. 2014. Re-inoculation strategies enhance the degradation of emerging pollutants by fungal bioaugmentation in sewage sludge. Bioresource Technology. 168 :180-189.
Fallas-Padilla, K.L., Rodríguez-Rodríguez, C.E., Fernández Jaramillo, H., Arias Echandi, M.L. 2014. 2014. Arcobacter: comparison of isolation methods, diversity and potential pathogenic factors in commercially distributed chicken breast samples from Costa Rica. Journal of Food Protection. Number 6, No 6 :872-1042.
Aguilar-Mora, P., Chin-Pampillo, J.S., Ruíz-Hidalgo, K. 2014. Uso de “Pesticide Impact Rating Index (PIRI) para estimar la peligrosidad del uso de plaguicidas en el cultivo de cebolla (Allium Cepa L.). 2014. Uso de “Pesticide Impact Rating Index (PIRI) para estimar la peligrosidad del uso de plaguicidas en el cultivo de cebolla (Allium Cepa L.) O. Mundo da Saude. 38(1) :24(30).
Sumaiyya Mujawar, Sagar C. Utture, Eddie Fonseca, Jessie Matarrita, Kaushik Banerjee. 2014. Validation of a GC-MS method for the estimation of dithiocarbamate fungicide residues and safety evaluation of mancozeb in fruits and vegetables Food Chemistry. 150(1) :175–181.
Biodegradation of pharmaceuticals by fungi and metabolites identification
Cruz-Morató, C.; Rodríguez-Rodríguez, C.E.; Marco-Urrea, E.; Sarrà, M.; Caminal, G.; Vicent, T.; Jelić, A.; García-Galán, M.J.; Pérez, S.; Díaz-Cruz, M.S.; Petrović, M.; Barceló, D. 2013. Biodegradation of pharmaceuticals by fungi and metabolites identification.The Handbook of Environmental Chemistry. 24 :165-213
Rodríguez-Rodríguez, C.E. G. Caminal, T. Vicent, M.S. Díaz-Cruz,E. Eljarrat, M. Farré, M.J. López de Alda, M. Petrović, and D. Barceló. 2013. Fungal-Mediated Degradation of Emerging Pollutants in Sewage SludgeThe Handbook of Environmental Chemistry. 24 :137-164.
Lépiz-Aguilar, L; Rodríguez-Rodríguez, C.E; Arias, M.L; Lutz, G. 2013. Acetone-Butanol-Ethanol (ABE) Production in Fermentation of Enzymatically Hydrolyzed Cassava Flour by Clostridium beijerinckii BA101 and Solvent Separation.Journal of Microbiology and Biotechnology. 23 (8):1092-1098.
Calidad del agua del Refugio Mata Redonda y los arrozales colindantes, Guanacaste, Costa Rica.
Pérez-Castillo A.G., Barboza-Mora, R., Ramos-Matarrita F. 2013. Calidad del agua del Refugio Mata Redonda y los arrozales colindantes, Guanacaste, Costa Rica. Agronomia Mesoamericana. 24(2) :379-392.
Barbieri, E., Moreira, P., Luchini, L.A., Ruíz-Hidalgo, K., Muñoz, A. 2013. Assessment of acute toxicity of carbofuran in Macrobrachium olfersii (Wiegmann, 1836) at different temperature levels. 2013. Toxicology and Industrial Health.32 no. 1 :167-14
Mujawar, S.; Utture, S.; Fonseca, E.; Matarrita, J.; Banerjee, K.2013. Validation of a GC–MS method for the estimation of dithiocarbamate fungicide residues and safety evaluation of mancozeb in fruits and vegetables. Food Chemistry. 150 :175-181.
Biodegradation of pharmaceuticals by fungi and metabolites identification
Cruz-Morató, C.; Rodríguez-Rodríguez, C.E.; Marco-Urrea, E.; Sarrà, M.; Caminal, G.; Vicent, T.; Jelić, A.; García-Galán, M.J.; Pérez, S.; Díaz-Cruz, M.S.; Petrović, M.; Barceló, D.2012. Biodegradation of pharmaceuticals by fungi and metabolites identification.Springer-Verlag, Berlin Heidelberg. 24 :165-213.
Fungal-mediated degradation of emerging pollutants in sewage sludge.
Rodríguez-Rodríguez, C.E., Caminal, G., Vicent, T., Díaz-Cruz, M.S., Eljarrat, E., Farré, M., López de Alda, M.J., Petrović, M., Barceló, D.2012.Fungal-mediated degradation of emerging pollutants in sewage sludge. Springer-Verlag, Berlin Heidelberg.24:137-164.
Castro, V.; Rodríguez, C.; Azofeifa, I.2012. Hydrocarbon degrading microflora in a tropical fuel-contaminated aquifer: Assessing the feasibility of PAH bioremediation. International Journal of Environmental Research. 6(1) : 345-352.
Rodríguez-Rodríguez, C.E., Barón, E., Gago-Ferrero, P., Jelić, A., Llorca, M., Farré, M., Díaz-Cruz, S., Eljarrat, E., Petrović M., Caminal, G., Barceló, D., Vicent, T. 2012. Removal of pharmaceuticals, polybrominated flame retardants and UV filters from sludge by the fungus Trametes versicolor in bioslurry reactor. Journal of Hazardous Materials. 233 :235-243.
Rodríguez-Rodríguez, C.E., Jelić, A., Pereira, M.A., Sousa, D.Z., Petrović, M., Alves, M.M., Barceló, D., Caminal, G., Vicent, T.2012. Bioaugmentation of sewage sludge with Trametes versicolor in solid-phase biopiles produces degradation of pharmaceuticals and affects microbial communities. Environmental Science and Technology. 46 :12012-12020.
*Chin, J; Carazo, E. 2012. Biodegration of C.-labelled Carbofuran and Terbufos in cultivated soils of cartago and Limon Provinces, Costa Rica. International Symposium on Managing Soils for Food Security and Climate Change Adaptation and Mitigation. 23-27 . Vienna, Austria.
Integrated analytical approaches to assess indicators of the effectiven of pesticide management practices at catchment scale.
*Maestroni, B; Nario, A; Nordgard, A; Castro, C; Carazo, E; Guang-Guo, Y. 2012. Integrated analytical approaches to assess indicators of the effectiven of pesticide management practices at catchment scale. Book of abstracts 9th European pesticide residue workshop. June 25th – 28th. Vienna, Austria.
Rodríguez-Rodríguez, C.E.; García-Galán, M.J.; Blánquez, P.; Díaz-Cruz M.S.; Barceló, D.; Caminal, G.; Vicent, T. 2012. Continuous degradation of a mixture of sulfonamides by Trametes versicolor and identification of metabolites from sulfapyridine and sulfathiazole. Journal of Hazardous Materials. 213 :347-354.
Bioremediation of emerging pollutants from sewage sludge by fungal bioaugmentation.
Rodríguez-Rodríguez, C.E., Jelić, A., Pereira, M.A., Sousa, D.Z., Blánquez, P., Sarrà, M., Marco-Urrea, E., Petrović, M., Alves, M.M., Barceló, D., Caminal, G., Vicent, T. 2012. Bioremediation of emerging pollutants from sewage sludge by fungal bioaugmentation. Environ. Eng. Manag. J.3 (Suppl)100 :99-104.
*Kleter, G; Unsworth, J; Harris, C; Shevah, Y; Rubin, B; Heinzen, H; Bodnaruk, K; Volz, D; Stephensn, G; Allelui, I; Carazo, E; Katayama, A; Kookana, R; Tiu, C. 2012. Transgenic Crop regulation and safety. Proceedings of 4th International Symposium on Pesticides and Environmental Safety & 5th Pan Pacific Conference on Pesticide Science & 8th International Workshop on Crop Protection Chemistry and Regulatory Harmonization. September 15th-20th, Beijing, P.R. China.110-111.
Badia-Fabregat, M.; Rodríguez-Rodríguez, C.E.; Gago-Ferrero, P.; Olivares, A.; Piña, B.; Díaz-Cruz, M.S.; Vicent, T.; Barceló, D.; Caminal, G. 2012. Degradation of UV filters in sewage sludge and 4-MBC in liquid medium by the ligninolytic fungus Trametes versicolor. J. Environ. Manage. 104:114-120.
Rodríguez-Rodríguez, C.E., Zúñiga-Chacón, C., Barboza-Solano, C.2012. Evaluation of growth in diesel fuel and surfactants production ability by bacteria isolated from fuels in Costa Rica. Revista de la Sociedad Venezolana de Microbiología. 32: 116-120.
Brenes, L; Carazo, E.2012. Indicadores del uso de plaguicidas en el marco de las buenas prácticas agrícolas (BPA), en Alvarado y Oreamuno, Costa Rica. O Mundo da Saúde. 36(4) :582-586.
Chin, J.S.; Ruíz, K; Aguilar, P; Arias, V; Masís, M.2012.Caracterización de la calidad del agua de la Quebrada Sanatorio en Tierra Blanca ubicada en una zona agrícola de la provincia de Cartago y sus implicaciones para la salud pública. O Mundo da Saúde. 36(4) :548-555.
Alfaro, P; Brenes, L; Ruíz, K; Jiménez, M.2012. Estrategia educativa “Prácticas agrícolas y su relación con la salud humana”, dirigida a agricultores de la zona norte de Cartago, Costa Rica. O Mundo da Saúde. 36(4) :619-624.
Passive samplers as a complement to punctual water and sediment sampling within the regional project GEF-REPCar reducing pesticides runoff to the Caribbean sea.
*Masís, M; Carazo, E; Acuña, J; Calderón, E; Castro, M; Pérez, G. 2011. Passive samplers as a complement to punctual water and sediment sampling within the regional project GEF-REPCar reducing pesticides runoff to the Caribbean sea. Poster Presentations 3rd Latin American Pesticide Residue Workshop, Food and Environment. May 8th-11th Montevideo, Uruguay. P. 186.
Uso de índice de calidad de agua armonizado para América Latina en la evaluación del río Purires, Cartago, Costa Rica.
*Beita, W.; Arias, V.; Molina, J. 2011. Uso de índice de calidad de agua armonizado para América Latina en la evaluación del río Purires, Cartago, Costa Rica. Propuesta de un índice de calidad de agua para la región de Latinoamérica y el Caribe.Mejora de la gestión de la contaminación de masas de aguas superficiales contaminadas con metales.Lima, Perú. Edición: Patricia Bedregal Salas. ISBN: 978-612-00-0615-3. Primera edición. :135-146.
*Chavarría, P. 2011. Manual para aplicadores y agricultores: buenas prácticas de manejo de plaguicidas para una agricultura sostenible, segura y sana. Adaptado por la Fundación Limpiemos Nuestros Campos Costa Rica, de una publicación de CropLife Latin America. Adaptación y modificación: Elizabeth Carazo (CICA-UCR) y Elizabeth Chinchilla (Consejo de Seguridad Ocupacional). :102
García, M.J.; Rodríguez, C.; Vincent, T., Caminal, G.; Díaz, M.S.; Barceló, D.2011. Biodegradation of sulfamethazine by Trametes versicolor: Removal from sewage sludge and identification of intermediate products by UPLC-QqTOF-MS. Science of the Total Environment. 409 :5505-5512.
Rodríguez, C.; Jelic, A.; Llorca, M.; Farré, M.; Caminal, G.; Petrovic, M.; Barceló, D.; Vincent, T. 2011. Solid-phase treatment with the fungus Trametes versicolor substantially reduces pharmaceutical concentrations and toxicity from sewage sludge. Bioresource Technology. 102 :5602-5608.
Borrás, E.; Llorens, G.; Rodríguez, C.; Sarrá, M.; Caminal, G.2011. Soil colonization by Trametes versicolor grown on lignocellulosic materials: Substrate selection and naproxen degradation.International Biodeterioration & Biodegradation. 65: 846-852.
Aguilar, L.; Rodríguez, C.; Arias, ML.; Lutz, G.; Ulate, W. 2011. Butanol production by Clostridium beijerinckii BA101 using cassava flour as fermentation substrate: enzymatic versus chemical pretreatments. World Journal of Microbiology & Biotechnology. 27: 1933-1939.
Reconnaissance of selected PPCP compounds in Costa Rican surface waters.
Spongberg, A.L.; Witter, J.D.; Acuña, J.; Vargas, J.A.; Murillo, M.; Umaña, G.; Gómez, E.; Pérez, G. 2011. Reconnaissance of selected PPCP compounds in Costa Rican surface waters. Water Research 45,(20) :6709–6717.
Físico-química de las aguas superficiales de la cuenca del río Rincón, península de Osa.
Beita, W.; Barahona, M. 2010. Físico-química de las aguas superficiales de la cuenca del río Rincón, península de Osa, Costa Rica. Cuadernos de Investigación UNED. 2(2): 151-173.
Agrochemical spray drift; assessment and mitigation.
Felsot, A.; Unsworth, J.; Linders, J.; Roberts, D.; Harris, C.; Carazo, E. 2010. Agrochemical spray drift; assessment and mitigation. Journal of Environmental Science and Health, Part B. Pesticides, Food Contaminants and Agricultural Wastes 45: 1-61.
Bioavailability of xenobiotics in the soil environment.
Arata, K.; Raj, B.; Richard, G.; Carazo, E.; Felsot, A.; Hamilton, D.; Harris, C.; Yong-Hwa, K.; Kleter, G.; Koedel, W.; Linders, J.; Peijnenburg, W.; Sabljie, A.; Stephenson, G.; Racke, K.; Baruch, R.; Tanaka, K.; Unsworth, J.; Wauchope, D. 2010. Bioavailability of xenobiotics in the soil environment. Review of Environmental Contamination and Toxicology 203: 1-86.
Pérez, A.G. 2010. Evaluación de las aguas de drenaje del sector de riego de Tamarindo y su influencia sobre el Parque Nacional Palo Verde. Revista Ciencia y Tecnología. 26 (1 y 2): 71-86.
Rodríguez, C.; Urrea, E.; Caminal, G. 2010. Naproxen degradation test to monitor Trametes versicolor activity in solid-state bioremediation processes. Journal of Hazardous Materials 179: 1152-1155.
Fungal contamination of stored automotive-fuels in a tropical environment.
Rodríguez, C.; Rodríguez, E.; Blanco, R.; Cordero, I.; Segura, D. 2010. Fungal contamination of stored automotive-fuels in a tropical environment. Journal of Environmental Sciences. 22: 1595-1601.
Rodríguez, C.; Marco, E.; Caminal, G. 2010. Degradation of naproxen and carbamazepine in spiked sludge by slurry and solid-phase Trametes versicolor systems. Bioresource Technology. 10: 2259-2266.
Aspectos prácticos de la validación e incertidumbre en medidas químicas.
*Castro, M.; Campos, C.; Peñaranda, S.; Casas, S.; Astorga, Y.; Alonso, A.; Ventura, F.; Simone, P.; Crubellati, R.; Di Risio, C.; Beita, W.; Ramírez, N.; Cordero, C.; Rovira, D.; Medina, R.2009.Aspectos prácticos de la validación e incertidumbre en medidas químicas.Buenos Aires. Argentina. Primera edición. ISBN 978-987-96413-8-5.
Establishment of an accredited pesticide residue laboratory in Costa Rica.
*Carazo, E.2009. Establishment of an accredited pesticide residue laboratory in Costa Rica. 5th International Fresenius Conference. 28-29 September 2009, Germany.
Bacterial contamination of automobile fuels in a tropical region: the case of Costa Rica
Rodríguez, C.; Rodríguez, E.; Blanco, R. 2009. Bacterial contamination of automobile fuels in a tropical region: the case of Costa Rica. Revista de Biología Tropical 57 .
Trends in Pesticide Use on Transgenic versus Conventional Crops. Information Systems for Biotechnology (ISB).
*Kleter, G.; Bhula, R.; Bodnaruk, K.; Carazo, E.; Felsot, A.; Harris, C.; Katayama, A.; Kuiper, H.; Racke, K.; Rubin, B.; Shevah, Y.; Stephenson, G.; Tanaka, K.; Unsworth, J.; Wauchope, D.; Wong, S.2008.Trends in Pesticide Use on Transgenic versus Conventional Crops. Information Systems for Biotechnology (ISB).News Report Agricultural and Environmental Biotechnology. August 2008 :5-8
Pesticide use in transgenic (GM) crops.
* Kleter, G.; Bhula, R.; Bodnaruk, K. ; Carazo, E.; Felsot, A.; Harris, C.; Katayama, A.; Kuiper, H.; Racke, K.; Rubin, B.; Shevah, Y.; Stephenson, G.; Tanaka, K.; Unsworth, J.; Wauchope, D.; Wong, S.2008.Pesticide use in transgenic (GM) crops. Winter School on “Research and Development Needs in Transgenic Farming Era” held at University of Agricultural Sciences, Dharwad from December 11-31, 2008.
Índice fisicoquímico de la calidad de agua para el manejo de lagunas tropicales de inundación.
Pérez, A.G., Rodríguez, A. 2008. Índice fisicoquímico de la calidad de agua para el manejo de lagunas tropicales de inundación. Revista Biología Tropical. 56(4): 1905-1918.
Parámetros físico-químicos en aguas costeras de la isla del Coco, Costa Rica (2001-2007).
Acuña, J.; García, J.; Gómez, E.; Vargas, J.A. 2008. Parámetros físico-químicos en aguas costeras de la isla del Coco, Costa Rica (2001-2007). Revista Biología Tropical. 56 (Suppl. 2):49-56
Rodríguez-Rodríguez, C.E., Rodríguez-Cavallini, E., Gamboa-Coronado, M.M., Jiménez-Cuadra, S., Sánchez-Porras, R., Gutiérrez-Espeleta, G.A. 2007. Flora bacteriana de la cavidad oral del mono tití (Saimiri oerstedii) y su perfil de sensibilidad a antibióticos. Neotropical Primates, 14, 103-111.
Kleter, G.; Bhula, R.; Bodnaruk, K.; Carazo, E.; Felsot, A.; Harris, C.; Katayama, A.; Kuiper, H.; Racke, K.; Rubin, B.; Shevah, Y.; Stephenson, G.; Tanaka, K.; Unsworth, J.; Wauchope, R.; Wong, S. 2007.Altered pesticide use on transgenic crops and the associated general impact from an environmental perspective. Pesticide Management Science, May 2007.
The role of eLearning in supporting analytical laboratories.
* Carazo, E.; Ferris, I.; Gross, K.; Maestroni, B. 2007.The role of eLearning in supporting analytical laboratories.
Proceedings of 3rd International Symposium on Pesticide and Environmental Safety & 7th International Workshop on Crop Protection Chemistry and Regulatory Harmonization (October 9-13, 2007, Beijing, P.R. China). pp. 29-42.
* Kleter, G.; Shevah, Y.; Unsworth, J.; Alleluia, I.; Bodnaruk, K.; Carazo, E.; Harris, C.; Katayama, A.; Rubin, B.; Stephenson, G.; Tiu, C. 2007.
Risk Assessment and Regulation of Transgenic Crops with a Particular Focus on Pesticides Applied to These Crops.
Proceedings of 3rd International Symposium on Pesticide and Environmental Safety & 7th International Workshop on Crop Protection Chemistry and Regulatory Harmonization (October 9-13, 2007, Beijing, P.R. China) pp. 36-42.
Respuesta de nueve palmas ornamentales a la suspensión del riego bajo un gradiente de sombra.
Gutiérrez, M.V.; Chinchilla, C.; Jiménez, K. 2007. Respuesta de nueve palmas ornamentales a la suspensión del riego bajo un gradiente de sombra. Agronomía Costarricense 31(1): 21-31.
Effect of terbufos on non-target parasitoids of Spodoptera frugiperda in maize
* Ramírez, F.; Valverde, B.; Carazo, E.; Carmiol, J. 2007.Effect of terbufos on non-target parasitoids of Spodoptera frugiperda in maize. Second FAO/IAEA/SIDA Research Coordination Meeting Agroecological Effects Resulting from the Use of Persistent Pesticides in Central America.
Una nueva especie de Adraneothrips (Thysanoptera, Tubulifera, Phalaeothripidae).
Álvarez, C.; Sánchez, C.; Retana, A. 2007. Una nueva especie de Adraneothrips (Thysanoptera, Tubulifera, Phalaeothripidae). Iheringia. Ser. Zool., Porto Alegre, 97(3):1-3.
Synthesis and characterization of Cu (II) containing PMMA co-polymer for optical applications.
Synthesis and characterization of Cu (II) containing PMMA co-polymer for optical applications. Journal of Materials Science 42: 3161-3166.
Influencia del uso del suelo en la calidad del agua en la subcuenca del río Jabonal, Costa Rica.
Auquilla, R.; Astorga, Y.; Jiménez, F. 2006. Influencia del uso del suelo en la calidad del agua en la subcuenca del río Jabonal, Costa Rica. Recursos Naturales y Ambiente 48:81-92.
Grupo Bacteroides fragilis en heces humanas no diarreicas y su sensibilidad antimicrobiana.
Rodríguez, C.E., Gamboa, M.M., Rodríguez, C., Vargas, P. 2006. Grupo Bacteroides fragilis en heces humanas no diarreicas y su sensibilidad antimicrobiana. Rev. Esp. Quimioterap.19:357-362 .
Rodríguez, C.E., Quesada, A., Rodríguez, E. 2006. Nickel biosorption by Acinetobacter baumannii and Pseudomonas aeruginosa isolated from industrial wastewater. Brazilian J. Microbiol.37:465-467.
Calidad bacteriológica y desechos sólidos en cinco ambientes costeros de Costa Rica.
García, V.; Acuña, J.; Vargas, J. A.; García, J. 2006. Calidad bacteriológica y desechos sólidos en cinco ambientes costeros de Costa Rica. Revista Biología Tropical.54 (Suppl.1):35-48.
Acuña, J.; Vargas, J. A.; Córdoba, R. 2006. A snapshot view of some vertical distributions of water parameters at a deep (200 m) station in the fjord-like Golfo Dulce, embayment, Costa Rica. Revista Biología Tropical.55 (Suppl.1):193-200.
Acuña, J.; Silva, A.M. 2006. Caracterización físico-química de dos estuarios en la bahía de Golfito, Golfo Dulce, Pacífico de Costa Rica. Revista Biología Tropical.54 (Suppl.1):241-256.
Araya, L.; Carazo, E.; Cartín, V. 2005. Diagnóstico del uso de insecticidas utilizados contra Bemisia tabaci (Gennadius) en tomate y chile en Costa Rica.Manejo Integrado de Plagas y Agroecología (Costa Rica) .75:68-76.
Costos en salud por la contaminación del aire.
Allen, P.; Vargas, C.; Araya, M.; Navarro, L.; Salas, R. 2005. Costos en salud por la contaminación del aire. Costa Rica 2001 Reporte Técnico. San José, Costa Rica. Ministerio de Salud.Setiembre 2005. 52 pp.
Modificación de una bomba calorimétrica para la extracción de aceites esenciales con CO2 en estado supercrítico.
Contreras, H.; Segnini, M.; Cicció, J.F. 2004. Modificación de una bomba calorimétrica para la extracción de aceites esenciales con CO2 en estado supercrítico. Ingeniería y Ciencia Química. 21 (1-2):25-29.
Método voltamperométrico para determinar cromo (III) en agua potable a nivel de ultratrazas
Metales traza en sedimentos costeros de Costa Rica.
Jiménez, I.; Alvarado, A.L. 2004. Método voltamperométrico para determinar cromo (III) en agua potable a nivel de ultratrazas. Ingeniería y Ciencia Química.21 (1-2):25-29.
Hidrocarburos de petróleo, disueltos y dispersos, en cuatro ambientes costeros de Costa Rica.
Acuña, J.; Vargas, J.A.; Gómez, E.; García, J. 2004. Hidrocarburos de petróleo, disueltos y dispersos, en cuatro ambientes costeros de Costa Rica. Revista Biología Tropical.52 (Suppl. 2):43-50.
Coll, M.; Cortés, J.; Sauma, D. 2004. Características físico-químicas y determinación de plaguicidas en el agua de la laguna de Gandoca, Limón, Costa Rica. Revista Biología Tropical.53 (Suppl. 2) :33-42.
Impact of transgenic crops on the use of agrochemicals and the environment.
Bhula, R.; Carazo, E.; Felsot, A.; Harris, C.; Katayama, A.; Kleter, G.; Kuiper, H.; Racke, K.; Rubin, B.; Sheva, Y.; Stephenson, G.; Tanaka, K.; Unsworth, J.; Wong, S. 2003. Impact of transgenic crops on the use of agrochemicals and the environment.En: Proceedings of IUPAC-KSPS Int’ 1 Workshop on Pesticides,2003, October 13-16, Seoul, Korea.
Validación de un método para la determinación de residuos de carbamatos en aguas, usando CLAR con determinación postcolumna
Chinchilla, J.A.; Acuña, J. 2002. Validación de un método para la determinación de residuos de carbamatos en aguas, usando CLAR con determinación postcolumna. Revista Ingeniería y Ciencia Química.20(1) :28-32.
Composición del aceite esencial de las hojas de Callistemon viminalis (Gaertn) cultivada en Costa Rica
Cicció, J.F.; Chaverri, C.; Segnini, M. 2002. Composición del aceite esencial de las hojas de Callistemon viminalis (Gaertn) cultivada en Costa Rica. Revista Ingeniería y Ciencia Química.20(1) :14-16.
Environmental Fate Considerations for Pesticides in Tropical Ecosystems
Carazo, E. 2002. Environmental Fate Considerations for Pesticides in Tropical Ecosystems. Chemistry of Crop Protection: Progress and Prospects in Science and Regulation.Wiley-Vch. 2:334-345.
Estudio de algunas prácticas agronómicas asociadas a la siembra de tomate y chile, utilizadas por los agricultores en Costa Rica, y su influencia en los ataques de la mosca blanca Bemisia tabaci (Gennadius)
Araya, L.; Carazo, E.; Cartín, V. 2000. Estudio de algunas prácticas agronómicas asociadas a la siembra de tomate y chile, utilizadas por los agricultores en Costa Rica, y su influencia en los ataques de la mosca blanca Bemisia tabaci (Gennadius). Revista Manejo Integrado de Plagas. CATIE.
Metales traza en sedimentos costeros de Costa Rica.
García, J.; Acuña, J.; Vargas, J.A. 2004. Metales traza en sedimentos costeros de Costa Rica. Revista Biología Tropical.52 (Suppl. 2):51-60.
Caracterización de aerosoles en el Área Metropolitana de San José.
Mejías, J.A.; Rodríguez, A.2000.Caracterización de aerosoles en el Área Metropolitana de San José, Costa Rica.Revista Ingeniería y Ciencia Química.19(2) :81-84.
Resistencia de Plutella xylostella (L.) a Bacillus thuringiensis (Berliner) en Costa Rica
Cartín, V.; Carazo, E.; Lobo, J.; Monge, L.A.; Araya, L. 1999. Resistencia de Plutella xylostella (L.) a Bacillus thuringiensis (Berliner) en Costa Rica. Revista Manejo Integrado de Plagas (Costa Rica) (54): 31-36, 1999.
Persistence of endosulfan and its metabolites in tomato plants and soil
Carazo, E.; Barquero, M.; Valverde, B. 1999. Persistence of endosulfan and its metabolites in tomato plants and soil. Use of nuclear and related techniques in studies of agroecological effects resulting from the use of persistent pesticides in Central America. Report of a final Research Co-ordination Meeting, organized by the Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture and held in Panamá City, Panamá. 20-24 April 1998. IAEA-TECDOC-1116 International Atomic Energy Agency, September 1999.
Impact of terbufos on Cotesia flavipes (Cameron), a parasitoid of Diatraea saccharalis (F.)
* Vargas, E.; Valverde, B.; Carazo, E. 1999. Impact of terbufos on Cotesia flavipes (Cameron), a parasitoid of Diatraea saccharalis (F.). Use of nuclear and related techniques in studies of agroecological effects resulting from the use of persistent pesticides in Central America. Report of a final Research Co-ordination Meeting, organized by the Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture and held in Panamá City, Panamá. 20-24 April 1998. IAEA-TECDOC-1116 International Atomic Energy Agency, September 1999.
Management of white flies (Bemisia tabaci, Gennadius) in tomato with a combination of plastic mulch and insecticides in Costa Rica
* Cubillo, D.; Hilje, L.; Valverde, B.; Carazo, E. 1999. Management of white flies (Bemisia tabaci, Gennadius) in tomato with a combination of plastic mulch and insecticides in Costa Rica. Use of nuclear and related techniques in studies of agroecological effects resulting from the use of persistent pesticides in Central America. Report of a final Research Co-ordination Meeting, organized by the Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture and held in Panamá City, Panamá. 20-24 April 1998. IAEA-TECDOC-1116 International Atomic Energy Agency, September 1999.
Diagnóstico del uso de insecticidas para el combate de Plutella xylostella en Costa Rica
Araya, L.; Monge, L.A.; Carazo, E.; Cartín, V. 1999. Diagnóstico del uso de insecticidas para el combate de Plutella xylostella en Costa Rica. Manejo Integrado de Plagas (Costa Rica) (52): 49-61, 1999.
Persistence of terbufos and its metabolites in soil and maize
*Carazo, E.; Valverde, B.E.; Rodríguez, O.M.; Barquero, M. 1997. Persistence of terbufos and its metabolites in soil and maize. Environmental Behaviour of Crop Protection Chemicals. In: Proceedings of an International Symposium on the use of nuclear and related techniques for studying environmental behaviour of crop protection chemicals. IAEA/FAO, 1-5 July 1996.
Residuos de plaguicidas en la zona de influencia del proyecto de riego Arenal Tempisque
*Rodríguez, O.M. 1997. Residuos de plaguicidas en la zona de influencia del proyecto de riego Arenal Tempisque. Informe final del proyecto “Residuos en la vida silvestre dentro de la zona de riego del programa de riego Arenal-Tempisque, Convenio UCR-SENARA”. Centro de Investigación en Contaminación Ambiental. Universidad de Costa Rica.
Vigilancia de la calidad de las aguas superficiales en la zona de influencia del proyecto de riego Arenal Tempisque
*Rodríguez, A. 1997. Vigilancia de la calidad de las aguas superficiales en la zona de influencia del proyecto de riego Arenal Tempisque. Informe final del proyecto “Estudio sobre la calidad química de las aguas utilizadas actualmente en el distrito de riego Arenal-Tempisque (DRAT) mediante un plan de vigilancia”. Convenio UCR-SENARA”. Centro de Investigación en Contaminación Ambiental. Universidad de Costa Rica.
Monitoreo de vectores. Proyecto de Riego Arenal Tempisque (DRAT)
*Vargas, M. 1997. Monitoreo de vectores. Proyecto de Riego Arenal Tempisque (DRAT). Centro de Investigación en Enfermedades Tropicales. Universidad de Costa Rica.
Insecticidas y resistencia. Metodología para el estudio y manejo de moscas blancas y geminivirus
Carazo, E.; Martínez, J.; Bustamante, M. 1996. Insecticidas y resistencia. Metodología para el estudio y manejo de moscas blancas y geminivirus. Turrialba, Costa Rica. Centro Agronómico Tropical de Investigación y Enseñanza (CATIE). Unidad de Fitoprotección. 1996. 150 pp.
Plaguicidas organoclorados en suelos de la Región Caribe de Costa Rica
Mora, M.; Rodríguez, O.M. 1996. Plaguicidas organoclorados en suelos de la Región Caribe de Costa Rica. Revista Ingeniería y Ciencia Química. Vol. 16 (1): 37-40 1996.
Influencia de la actividad del volcán Poás sobre la química de las aguas de lluvia en la región de Tacares, Costa Rica
Rodríguez, A.; Ugarte, J.; Álvarez, M.; Klockow, D. 1995. Influencia de la actividad del volcán Poás sobre la química de las aguas de lluvia en la región de Tacares, Costa Rica. Revista Ingeniería y Ciencia Química. Vol. 15 (2): 42-47 1996.
Uso de plaguicidas de reconocida peligrosidad
García, J. 1994. Uso de plaguicidas de reconocida peligrosidad. Repertorio Científico (UNED) 2 (1): 29-35 1994.
Causas del mal uso de los plaguicidas (con énfasis en Costa Rica)
García, J. 1994. Causas del mal uso de los plaguicidas (con énfasis en Costa Rica). Tecnología en Marcha. Vol. 12, (4): 25-37.
Plaguicidas como contaminantes
García, J. 1993. Plaguicidas como contaminantes. Turrialba. Vol. 43. (3): 221-229, trimestre julio-setiembre 1993.
Los plaguicidas y el combate de plagas agrícolas en Costa Rica
García, J. 1993. Los plaguicidas y el combate de plagas agrícolas en Costa Rica. Agronomía Costarricense 17 (1): 121-133 1993.
Los conocimientos tradicionales y el combate de plagas en América Central: Revisión de los archivos del ICECU
Monge, J.E.; García, J. 1993. Los conocimientos tradicionales y el combate de plagas en América Central: Revisión de los archivos del ICECU. Revista Manejo Integrado de Plagas (Costa Rica) (28): 57-63, 1993.
Importancia de los residuos y subproductos de la agricultura
Rodríguez, A.; Camacho, H. 1993. Importancia de los residuos y subproductos de la agricultura. Revista Ingeniería 3 (3): 11-15, 1993, San José, Costa Rica.
Disminución del contenido de tripolifosfato de sodio en los detergentes aniónicos de uso más común en Costa Rica
Ugalde M.P.; Rodríguez, A. 1993. Disminución del contenido de tripolifosfato de sodio en los detergentes aniónicos de uso más común en Costa Rica. Tecnología en Marcha. Vol. 11. (4): 37-44, 1993.
Contaminación por petróleo en la costa Caribe de Costa Rica
Acuña, J. 1993. Contaminación por petróleo en la costa Caribe de Costa Rica. Organization of American States. El manejo de ambientes y recursos costeros en América Latina y el Caribe. Vol. 2, octubre 1993.
Límites máximos de residuos de plaguicidas en productos alimenticios de origen vegetal: situación en Costa Rica
García, J. 1992. Límites máximos de residuos de plaguicidas en productos alimenticios de origen vegetal: situación en Costa Rica. Agronomía Costarricense 16(1): 153-162, 1992.
Caracterización de algunos detergentes domésticos de uso común en Costa Rica y evaluación de sus propiedades limpiadoras
Ugalde M.P.; Rodríguez, A. 1992. Caracterización de algunos detergentes domésticos de uso común en Costa Rica y evaluación de sus propiedades limpiadoras. Tecnología en Marcha. Vol. 11. (3): 85-90, 1992.
Simultaneous separation and determination of hydrocarbons and organochlorine compounds by using a two-step microcolumn
Rodríguez, O.M.; Desideri, P.G.; Lepri, L.; Checchini, L. 1991. Simultaneous separation and determination of hydrocarbons and organochlorine compounds by using a two-step microcolumn. Journal of Chromatography, 555 (1991) 221-228.
Clasificación de las aguas de consumo público de Costa Rica según su dureza total
Ugalde, M.P.; Rodríguez, A. 1991. Clasificación de las aguas de consumo público de Costa Rica según su dureza total. Tecnología en Marcha. Vol. 11. (2): 23-27, 1991.
Paraquat behavior in Costa Rica soils and residues in coffee
Constenla, M. A.; Riley, D.; Kennedy, S.; Rojas, C.; Mora, L.E.; Stevens, J. 1990. Paraquat behavior in Costa Rica soils and residues in coffee. Journal Agric. Food Chem. (38): 1985-1988, 1990.
Método de determinación de residuos de oxidemetón-metil y demetón-S-metil-sulfona en plantas de trigo (Triticum aestivum L.) y suelo por cromatografía de gases
García, J. E. 1990. Método de determinación de residuos de oxidemetón-metil y demetón-S-metil-sulfona en plantas de trigo (Triticum aestivum L.) y suelo por cromatografía de gases. Revista Agroquímica Tecnol. Aliment., 30/3, 1990, pp. 403-408.
Distribución estacional de la carga contaminante a lo largo del río Grande de Tárcoles, Costa Rica
Tolerancia de la mosca del Mediterráneo (Ceratitis capitata,Wiedmann) al insecticida malation
Aguilar, M.A.; Camacho, H. 1989. Tolerancia de la mosca del Mediterráneo (Ceratitis capitata,Wiedmann) al insecticida malation. Revista Biología Tropical 37(1): 75-78, 1989
Acidez del agua de lluvia en la ciudad de San Ramón, Alajuela, Costa Rica, 1983-1985
Acuña, J.; Chacón, B.; Montero, J. 1989. Acidez del agua de lluvia en la ciudad de San Ramón, Alajuela, Costa Rica, 1983-1985. Tecnología en Marcha Vol. 9 (3): 61-67, 1989.
Fluctuación de la población de la Mosca del Mediterráneo Ceratitis capitata (Wiedemann) (Díptera: Tephritidae) en dos huertos frutales en Costa Rica
Camacho, H. 1988. Fluctuación de la población de la Mosca del Mediterráneo Ceratitis capitata (Wiedemann) (Díptera: Tephritidae) en dos huertos frutales en Costa Rica.
Manejo Integrado de Plagas (8): 1-11, junio 1988.
Contaminación industrial del aire por plomo
Camacho, H.; Avendaño, A. 1988. Contaminación industrial del aire por plomo. Ingeniería, Ciencia y Química. Vol. 12, (1-2): 21-23, 1988.
Un modelo cuatrimestre-bimestre para estimar la variación de la carga orgánica en aguas superficiales
Sequeira, M.A.; Chacón, B. 1987. Un modelo cuatrimestre-bimestre para estimar la variación de la carga orgánica en aguas superficiales. Tecnología en Marcha. Vol. 8 (2-3).
Metales pesados en los ríos Virilla y Grande de Tárcoles, Costa Rica
Ramírez, J. M.; Sequeira, M. A.; Chacón, B. 1987. Metales pesados en los ríos Virilla y Grande de Tárcoles, Costa Rica. Ingeniería y Ciencia Química. Vol. 11 (2-3) 1987.
Helisoma trivolvis: huésped intermediario de Angiostrongylus costaricensis
Camacho, H. 1987. Helisoma trivolvis: huésped intermediario de Angiostrongylus costaricensis. Brenesia 27: 75-79, 1987.
Estudio preliminar sobre la contaminación por petróleo en la Región Norte del Caribe de Costa Rica – Mayo, 1986
Acuña, J.; Murillo, M. 1987. Estudio preliminar sobre la contaminación por petróleo en la Región Norte del Caribe de Costa Rica – Mayo, 1986. Ingeniería y Ciencia Química. Vol. 11 (1): 27-29, 1987.
Estudio del contenido de metales en conservas vegetales producidas en Costa Rica
Aiello, J.; Rodríguez, O.M.; Chacón, J. 1987. Estudio del contenido de metales en conservas vegetales producidas en Costa Rica. Ingeniería y Ciencia Química. Vol. 11 (1): 7-13, 1987.
El combate integrado de plagas: opción ante los problemas derivados del uso de plaguicidas
Camacho, H. 1986. El combate integrado de plagas: opción ante los problemas derivados del uso de plaguicidas. Biocenosis 2 (3-4): 43-45, enero-junio 1986.
Agroquímicos
Carazo, E. 1986. Agroquímicos. Setiembre Científico 3: Suelos y Agricultura. Editorial Universidad Estatal a Distancia. San José, Costa Rica, 1986. pp. 35-41.
Estudio de la contaminación por petróleo en la costa Caribe de Costa Rica: 1981-1985
Acuña, J.; Mata, A.J.; Murillo, M.; Cortés, J. 1987. Estudio de la contaminación por petróleo en la costa Caribe de Costa Rica: 1981-1985. Carib. Journal Science 23(1): 41-49 1987.
Análisis de plaguicidas organoclorados en grasa humana en población costarricense sin riesgo ocupacional
Barquero, M.; Constenla, M. 1987. Análisis de plaguicidas organoclorados en grasa humana en población costarricense sin riesgo ocupacional. Ingeniería y Ciencia Química. Vol. 11 (1): 15-18, 1987.
Sorción, desorción y movilidad de metamidofós y carbofurán en 10 suelos costarricenses
González, G.; Carazo, E. 1986. Sorción, desorción y movilidad de metamidofós y carbofurán en 10 suelos costarricenses. Agronomía Costarricense 10 (1/2): 121-128. 1986.
Residuos de plaguicidas organoclorados en tejido adiposo humano en Costa Rica
Barquero, M.; Constenla, M. 1986. Residuos de plaguicidas organoclorados en tejido adiposo humano en Costa Rica. Revista Biología Tropical 34 (1): 7-12, 1985.
Tratamiento de aguas servidas domésticas mediante filtros de percolación: una opción razonable
Rodríguez, A. 1985. Tratamiento de aguas servidas domésticas mediante filtros de percolación: una opción razonable. Desarrollo 2: 24-26. 1985.
Residuos de DDT y sus metabolitos en grasa humana en el Valle Central de Costa Rica
Barquero, M.; Thiel, R. 1985. Residuos de DDT y sus metabolitos en grasa humana en el Valle Central de Costa Rica. Ciencia y Tecnología 9 (1,2): 39-43, 1985.
Los detergentes y la contaminación del ambiente
Rodríguez, A.; Mata, A.; Chacón, B. 1985. Los detergentes y la contaminación del ambiente. Biocenosis 1 (4): 15-16 (5). Abril-junio 1985.
Estudio sobre el contenido de metales pesados en los ríos del Área Metropolitana de Costa Rica
Ramírez, J.M.; Sequeira, M.A.; Chacón, B. 1985. Estudio sobre el contenido de metales pesados en los ríos del Área Metropolitana de Costa Rica. Ingeniería y Ciencia Química. Vol. 9 (1): 11-13, 1985.
Uso del jacinto de agua (Eichornia crassipes) para la depuración de aguas contaminadas con cromo
Rodríguez, L.; Rodríguez, A. 1984. Uso del jacinto de agua (Eichornia crassipes) para la depuración de aguas contaminadas con cromo. Tecnología en Marcha. Vol. 7 (1): 19-23, abril-junio 1984.
Studies of Methamidophos-C-14 in Costa Rican vegetables and soils
Carazo, E.; Constenla, M.; Fuentes, G. 1984. Studies of Methamidophos-C-14 in Costa Rican vegetables and soils. Chemosphere 13 (8): 939-943, 1984.
Prevalencia de toxoplasmosis en el cantón de Pococí
Quesada, A.; Barquero, M.; Cuernavaca, A.; Venegas, G. 1984. Prevalencia de toxoplasmosis en el cantón de Pococí. Acta Médica Costarricense. Vol. 27: 102-106, 1984.
Eutrofización del río Grande de Tárcoles
Chacón, B.; Gómez, R.; Mata, A. 1984. Eutrofización del río Grande de Tárcoles. Tecnología en Marcha. Vol. 7 (1): 11-17, abril-junio 1984.
Determinación de plaguicidas organoclorados en leche materna en Costa Rica
Umaña, V.; Constenla, M. 1984. Determinación de plaguicidas organoclorados en leche materna en Costa Rica. Revista Biología Tropical 32 (2): 233-239, 1984.
Contaminación de las aguas superficiales de la cuenca 24: Grande de Tárcoles
Chacón, B.; Sequeira, M.A. 1984. Contaminación de las aguas superficiales de la cuenca 24: Grande de Tárcoles. Tecnología en Marcha. Vol. 7 (2): 37-44, julio-setiembre 1984.
Comportamiento de la carga orgánica en la cuenca 24: Virilla-Tárcoles, Costa Rica
Chacón, B.; Sequeira, M.A. 1984. Comportamiento de la carga orgánica en la cuenca 24: Virilla-Tárcoles, Costa Rica. Tecnología en Marcha. Vol. 7 (3): 27-34, octubre-diciembre 1984.
Calidad de las aguas de los ríos Toyogres y San Nicolás, Cartago, Costa Rica, 1980-1982
Rodríguez, A.; Mata, A.; Chacón, B. 1984. Calidad de las aguas de los ríos Toyogres y San Nicolás, Cartago, Costa Rica, 1980-1982. Tecnología en Marcha. Vol. 6 (4): 3-7, enero-marzo 1984.
Análisis de residuos de plomo en repollo en Costa Rica
Mora, L.; Carazo, E.; Fuentes, G.; Constenla, M.; Rodríguez, L. 1984. Análisis de residuos de plomo en repollo en Costa Rica. Agronomía Costarricense 8 (2): 161-165, 1984.
Diagnóstico sobre el uso y manejo de plaguicidas en las fincas hortícolas del Valle Central de Costa Rica
Aráuz, L.F.; Carazo, E.; Mora, D. 1983. Diagnóstico sobre el uso y manejo de plaguicidas en las fincas hortícolas del Valle Central de Costa Rica. Informe preliminar. Agronomía y Ciencia 1 (3): 37-49, 1983.
Consideraciones generales sobre los residuos de plaguicidas en cultivos hortícolas en Costa Rica
Carazo, E. 1983. Consideraciones generales sobre los residuos de plaguicidas en cultivos hortícolas en Costa Rica. Agronomía y Ciencia 1 (3): 61-66, 1983.
Persistencia y absorción de plaguicidas
Constenla, M.A. 1982. Persistencia y adsorción de plaguicidas. En: Contaminación ambiental: un enfoque multidisciplinario. Editorial Tecnológico de Costa Rica, pp. 133-135, 1982.
Niveles de agentes tensoactivos aniónicos en las aguas de la cuenca del Virilla-Grande de Tárcoles, Costa Rica
Chacón, B.; Rodríguez, A.; Mata, A.; Garro, M. 1982. Niveles de agentes tensoactivos aniónicos en las aguas de la cuenca del Virilla-Grande de Tárcoles, Costa Rica. Tecnología en Marcha. Vol. 5 (3): 3-8, octubre-diciembre 1982.
La estructura salina del estero de Puntarenas y manglares adyacentes
Mata, A.; Chacón, B.; Rodríguez, A. 1982. La estructura salina del estero de Puntarenas y manglares adyacentes. En: Contaminación ambiental: un enfoque multidisciplinario. Editorial Tecnológico de Costa Rica, pp. 33-37, 1982.
La contaminación fluvial y la producción agrícola
Rodríguez, A.; Salas, W.; Chacón, B. 1982. La contaminación fluvial y la producción agrícola. En: Contaminación ambiental: un enfoque multidisciplinario. Editorial Tecnológico de Costa Rica, pp. 137-141, 1982.
La contaminación del mar por petróleo
Mata, A. 1982. La contaminación del mar por petróleo. En: Contaminación ambiental: un enfoque multidisciplinario. Editorial Tecnológico de Costa Rica, pp. 17-25, 1982.
La contaminación ambiental
Mata, A. 1982. La contaminación ambiental. Tecnología en Marcha. Vol. 5 (1 – 2): 9-15 Abril-setiembre 1982.
Degradación y comportamiento de 14C-Carbaril en dos suelos brasileños
Carazo, E.; Flores, E.; Wiendl, F.M.; Lord, K.A.; Bromilow, R. 1982. Degradación y comportamiento de 14C-Carbaril en dos suelos brasileños. Agronomía Costarricense 6 (1/2): 81-86, 1982.
Calidad de los desechos líquidos en la industria de la curtición en Costa Rica: una estimación cuantitativa
Chacón, B.; Rodríguez, A.; Sánchez, M. 1982. Calidad de los desechos líquidos en la industria de la curtición en Costa Rica: una estimación cuantitativa. Tecnología en Marcha. Vol. 5 (1-2): 25-28, abril- setiembre 1982.
Contaminación de aguas subterráneas con productos químicos: un caso práctico
Chacón, B.; Chacón, J. 1982. Contaminación de aguas subterráneas con productos químicos: un caso práctico. En: Contaminación ambiental: un enfoque multidisciplinario. Editorial Tecnológico de Costa Rica, pp. 123-131, 1982.
Programa de computadora para un estudio ambiental en Guanacaste, Costa Rica
Chacón, J.; Chacón, B.; Mata, A. 1981. Programa de computadora para un estudio ambiental en Guanacaste, Costa Rica. Tecnología en Marcha. Vol. 4 (1): 3-8, 1981.
Evaluación química del agua subterránea en la cuenca superior del río Cañas, Guanacaste, Costa Rica
Chacón, J.; Chacón, B.; Rodríguez, A. 1981. Evaluación química del agua subterránea en la cuenca superior del río Cañas, Guanacaste, Costa Rica. Ingeniería y Ciencia Química 1(5), 1981.
Estudio de las condiciones químicas del agua subterránea de la cuenca superior del río Cañas, Guanacaste
Chacón, B.; Chacón, J.; Mata, A. 1981. Estudio de las condiciones químicas del agua subterránea de la cuenca superior del río Cañas, Guanacaste. Agronomía Costarricense 5 (1/2): 135-139, 1981.
El uso de aguas contaminadas en la irrigación de vainica (Phaseolus vulgaris L.)
Salas, W.; Chacón, B.; Rodríguez, A.; Fuguls, R. 1981. El uso de aguas contaminadas en la irrigación de vainica (Phaseolus vulgaris L.). Estudio preliminar en sus consecuencias. Ingeniería y Ciencia Química 61-65, 1981.
Contaminación por nitratos en aguas subterráneas de la cuenca superior del río Cañas, Guanacaste
Chacón, B.; Chacón, J. 1981. Contaminación por nitratos en aguas subterráneas de la cuenca superior del río Cañas, Guanacaste. Agronomía Costarricense, pp. 183-186, 1981.
The sorption of carbaryl on soils determined by spectrophotometric and radiometric techniques
Carazo, E.; Lord, K.; Flores, E. 1979. The sorption of carbaryl on soils determined by spectrophotometric and radiometric techniques. Turrialba. Vol. 29, (3): 159-162, trimestre julio-setiembre 1979.
Los agentes tensoactivos en el proceso de aereación
Chacón, B.; Mata, A. 1979. Los agentes tensoactivos en el proceso de aereación. Ingeniería y Ciencia Química 3 (3): 127-131, 1979.
Contaminación del río Bermúdez, Alajuela
Cordero, A.; Chacón, B.; Rodríguez, A. 1979. Contaminación del río Bermúdez, Alajuela. Agronomía Costarricense 3(2): 109-113, 1979.
Residuos, degradación y comportamiento de la ametrina en un vertisol de Guanacaste, Costa Rica
León, L.; Constenla, M.; Bornemiza, E. 1978. Residuos, degradación y comportamiento de la ametrina en un vertisol de Guanacaste, Costa Rica. Turrialba. Vol. 28, (1): 3-7, trimestre enero-marzo 1978.
Los efectos de los detergentes en el agua
Mata, A., Chacón, B. 1978. Los efectos de los detergentes en el agua. Ingeniería y Ciencia Química 2(3): 55-58, 1978.
Residuos de insecticidas organofosforados en repollo (Brassica oleracea var. capitata)
Carazo, E.; Constenla, M.; Fuentes, G. 1976. Residuos de insecticidas organofosforados en repollo (Brassica oleracea var. capitata). Turrialba. Vol. 26, (4): 321-325, trimestre octubre-diciembre 1976.
Estudio químico de las características de irrigación de las aguas tributarias del Embalse Arenal
Corrales, R.; Chacón, B. 1976. Estudio químico de las características de irrigación de las aguas tributarias del Embalse Arenal. Revista del Colegio de Químicos e Ingenieros Químicos de Costa Rica 3 (6): 7-13, 1976.
Los fluoruros de aguas potables de Costa Rica
Chacón, B.; Acuña, A.; Ortiz, E. 1971. Los fluoruros de aguas potables de Costa Rica. Revista de la Universidad de Costa Rica 30: 157-163, 1971.
Contenido de iodo en aguas de consumo de Costa Rica
Ortiz, E.; Chacón, B.; Álvarez, M. 1971. Contenido de iodo en aguas de consumo de Costa Rica. Revista del Colegio de Químicos e Ingenieros Químicos de Costa Rica. Vol. 1, (3): 113-118, 1971