• Características y efectos del cambio climático en el Corredor Seco Centroamericano (CSC) 

  Gotlieb, Yosef; Pérez Briceño, Paula Marcela; Hidalgo León, Hugo G.; Alfaro Martínez, Eric J. (2022-07-26)

  Se presentan tres infografías relacionadas con las características y efectos del cambio climático en el Corredor Seco Centroamericano (CSC). Estas fueron divulgadas, como una actividad de extensión y difusión, a través del ...

• Inventory of macroalgal epiphytes on the seagrass Thalassia testudinum (Hydrocharitaceae) in Parque Nacional Cahuita, Caribbean coast of Costa Rica 

  Samper Villarreal, Jimena; Bernecker Lucking, Andrea; Wehrtmann, Ingo S. (2008)

  Seagrass epiphytes play an important role in seagrass habitats; however, available information from Central America is scarce. The present study focuses on macroalgal epiphytes on leaves of the seagrass Thalassia testudinum ...

• Rapid Determination of the ‘Legal Highs’ 4-MMC and 4-MEC by Spectroelectrochemistry: Simultaneous Cyclic Voltammetry and In Situ Surface-Enhanced Raman Spectroscopy 

  González Hernández, Jerson; Ott, Colby Edward; Arcos Martínez, María Julia; Colina, Álvaro; Heras, Aránzazu; Alvarado Gámez, Ana Lorena; Urcuyo Solórzano, Roberto; Arroyo Mora, Luis E. (2021-12-31)

  The synthetic cathinones mephedrone (4-MMC) and 4-methylethcathinone (4-MEC) are two designer drugs that represent the rise and fall effect of this drug category within the stimulants market and are still available in ...

• I Simposio sobre Cambio Climático y Biodiversidad: Hacia el fortalecimiento de la resiliencia y acciones requeridas ante el Cambio Climático en Latinoamérica 

  Samper Villarreal, Jimena; Vincent Rossi, Andrea Gael; Álvarez Vergnani, Carolina; Gutiérrez Espeleta, Gustavo A (2019)

  El cambio climático es una variación significativa y permanente de los patrones globales del clima, sus consecuencias son irreversibles si no se toman las acciones pertinentes. En Latinoamérica, el cambio climático no ...

• Pathological mutations in PNKP trigger defects in DNA single-strand break repair but not DNA double-strand break repair 

  Kasalova, Ilona; Hailstone, Richard; Bublitz, Janin; Bogantes Ledezma, Jovel; Hofmann, Winfried; Leal Esquivel, Alejandro; Hanzlikova, Hana; Caldecott, Keith W. (2020)

  Hereditary mutations in polynucleotide kinasephosphatase (PNKP) result in a spectrum of neurological pathologies ranging from neurodevelopmental dysfunction in microcephaly with early onset seizures (MCSZ) to ...

• Exploración del Everest en la zona mesofótica del Parque Nacional Isla del Coco 

  Naranjo Elizondo, Beatriz (2021)

  Video realizado para difundir el proyecto 810-C1-081 "Estructura y biodiversidad de las comunidades de coral mesofóticas en el Parque Nacional Isla del Coco", que tiene como principal objetivo describir el monte Everest, ...

• Phytochemical study of endemic Costa Rican Annonaceae species Annona pittieri and Cymbopetalum costaricense 

  Parra Villalobos, Jonathan; De Ford, Christian; Murillo Masís, Renato (2021)

  Phytochemical profile of the Central American rainforest endemic Annonaceae species, Annona pittieri and Cymbonopetallum costaricense, were studied in search of novel bioactive compounds. The acetogenin squamocin (1) ...

• Seagrasses of Costa Rica: from the mighty Caribbean to the dynamic meadows of the Eastern Tropical Pacific 

  Samper Villarreal, Jimena; van Tussenbroek, Brigitta I.; Cortés Núñez, Jorge (2018)

  Seagrass meadows are declining worldwide, mostly attributed to anthropogenic disturbances. Understanding the dynamics of these meadows is urgent in order to establish adequate management and conservation strategies. Here, ...

• Ecología trófica de la trucha arcoíris Oncorhynchus mykiss (Salmonidae) en el Río Savegre, San Gerardo de Dota, Costa Rica 

  Naranjo Elizondo, Beatriz (2016)

  Los estudios de ecología trófica son fundamentales para el entendimiento del rol que un organismo tiene en la red alimenticia y en el flujo de energía del ecosistema. La trucha arcoíris es un pez depredador introducido en ...

• Gestión Integrada Marina y Costera en Costa Rica 

  Samper Villarreal, Jimena; Mora Rodríguez, Fernando David; Morales Ramírez, Álvaro (2020)

  Considerado como el primer país en vías de desarrollo en contar con un programa de Gestión Costera Integrada, Costa Rica es un país pequeño con dos costas que inalienablemente debe manejar sus recursos marino-costeros de ...

• Synchronized sexual reproduction of the seagrass Syringodium filiforme (Cymodoceaceae) in a tropical reef lagoon on the Caribbean coast of Costa Rica 

  Samper Villarreal, Jimena; Loría Naranjo, Margarita; van Tussenbroek, Brigitta I.; Cortés Núñez, Jorge (2020)

  There has been an increasing effort to understand the mechanisms of sexual reproduction in seagrasses, which is usually synchronized. Synchronization is caused by environmental cues, such as temperature and light availability, ...

• Anti-platelet activity and chemical characterization by UPLC-DAD-ESI-QTOF-MS of the main polyphenols in extracts from Psidium leaves and fruits 

  Rojas Garbanzo, Carolina; Rodríguez, Lyanne; Pérez Carvajal, Ana Mercedes; Mayorga Gross, Ana Lucía; Vásquez Chaves, Víctor; Fuentes Quinteros, Eduardo; Palomo, Iván (2021)

  In Costa Rica, two species of Psidium fruits, P. guajava and P. friedrichsthalianum, are widely consumed as food and used in folk medicine. Although studies have revealed the health effects of these fruits, there has been ...

• Expanding the Trichoderma harzianum species complex: Three new species from Argentine natural and cultivated ecosystems 

  Barrera, Viviana Andera; Iannone, Leopoldo Javier; Romero, Andrea Irene; Chaverri Echandi, Priscila (2021-06-22)

  A study was performed on a collection of 84 isolates from decaying plant tissues and soils in Argentina previously identified as Trichoderma harzianum. Based on multiple phenotypic characters and multilocus phylogenetic ...

• Methylotrophs and Hydrocarbon-Degrading Bacteria Are Key Players in the Microbial Community of an Abandoned Century-Old Oil Exploration Well 

  Rojas Gätjens, Diego; Fuentes Schweizer, Paola; Rojas Jiménez, Keilor Osvaldo; Pérez Pantoja, Danilo; Avendaño Vega, Roberto; Alpízar Mena, Randall; Coronado Ruiz, Carolina; Chavarría Vargas, Max (2021-04-17)

  In this work, we studied the microbial community and the physicochemical conditions prevailing in an exploratory oil well, abandoned a century ago, located in the Cahuita National Park (Costa Rica). According to our analysis, ...

• Special Issue: Diversity of Extremophiles in Time and Space 

  Puente Sánchez, Fernando; Chavarría Vargas, Max (2021-11-30)

  Extreme environments are fascinating ecosystems that have allowed us to increase our knowledge about the evolutionary processes of life [1], develop new biotechnological applications (e.g., industrial applications of ...

• Patrones de co-ocurrencia, elección de hábitat y comunicación heteroespecífica dentro de bandadas mixtas de aves 

  Muñoz Cambronero, Pablo Elías (2022-07-27)

  Las bandadas mixtas son uno de los sistemas más extendidos e interactivamente dinámicos en la Tierra, pero los factores que median su cohesión aún no se comprenden del todo. Su estudio a través de un enfoque evolutivo ...

• Grids II: Aromatic Acidity and Basicity 

  Lamoureux Lamontagne, Guy; Arias Álvarez, Carlos (2021)

  The effect of substituents on the acidity of benzoic acids and basicity of anilines has been organized in grids to demonstrate the inductive and resonance effects. The relation between structure and pKa is emphasized ...

• The potential of Pseudomonas for bioremediation of oxyanions 

  Vieto, Sofía; Rojas Gätjens, Diego; Jiménez, Jose Ignacio; Chavarría Vargas, Max (2021-12)

  Non-metal, metal and metalloid oxyanions occur naturally in minerals and rocks of the Earth’s crust and are mostly found in low concentrations or confined in specific regions of the planet. However, anthropogenic activities ...

• Operando tracking of oxidation-state changes by coupling electrochemistry with time-resolved X-ray absorption spectroscopy demonstrated for water oxidation by a cobalt-based catalysts film 

  Pasquini, Chiara; Liu, Si; Chernev, Petko; González Flores, Diego; Mohammadi, Mohammad Reza; Kubella, Paul; Jiang, Shan; Loos, Stefan; Klingan, Katharina; Sikolenko, Vadim V.; Mebs, Stefan; Haumann, Michael; Beyer, Paul; D’Amario, Luca; Smith, Rodney D.L.; Zaharieva, Ivelina; Dau, Holger (2021)

  Transition metal oxides are promising electrocatalysts for water oxidation, i.e., the oxygen evolution reaction (OER), which is critical in electrochemical production of non-fossil fuels. The involvement of oxidation state ...

• Guía de mediación pedagógica para aprendizajes comunitarios: comités de agua transfronte- rizos, Costa Rica - Nicaragua : pedagogía social, estrategias para la optimización del uso del agua para consumo humano en las comunidades de La Trocha e Isla Chica en los Chiles, Alajuela 

  Badilla Zamora, Isabel; Barrantes Jiménez, Kenia; Chacón Jiménez, Luz María; Fuentes Schweizer, Paola; Jiménez Corrales, Rafael; Morales Mora, Eric; Segura Esquivel, Sylvia; Solís Sánchez, Gabriela; Vargas Muñoz, Rigoberto; Villalobos Vega, Patricia (2021)

  El equipo de profesores y profesoras de la Universidad Nacional y la Universidad de Costa Rica que elaboró esta guía conforma el proyecto de extensión y acción social universitaria: “Pedagogía social: estrategias para la ...

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