• Microplastics alter composition of fungal communities in aquatic ecosystems 

  Kettner, Marie Therese; Rojas Jiménez, Keilor Osvaldo; Oberbeckmann, Sonja; Labrenz, Matthias; Grossart, Hans-Peter (2017)

  Despite increasing concerns about microplastic (MP) pollution in aquatic ecosystems, there is insufficient knowledge on how MP affect fungal communities. In this study, we explored the diversity and community composition ...

• Microplastic pollution increases gene exchange in aquatic ecosystems 

  Arias Andrés, María de Jesús; Klümper, Uli; Rojas Jiménez, Keilor Osvaldo; Grossart, Hans-Peter (2018-06)

  Pollution by microplastics in aquatic ecosystems is accumulating at an unprecedented scale, emerging as a new surface for biofilm formation and gene exchange. In this study, we determined the permissiveness of aquatic ...

• Aquatic fungi: targeting the forgotten in microbial ecology 

  Grossart, Hans-Peter; Rojas Jiménez, Keilor Osvaldo (2016-06)

  Fungi constitute important and conspicuous components of aquatic microbial communities, but their diversity and functional roles remain poorly characterized. New methods and conceptual frameworks are required to accurately ...

• A preliminary report of aquatic hyphomycetes isolated from Anzali lagoon (Gilan province, North of Iran) 

  Rezakhani, Forough; Khodaparast, Seyed Akbar; Masigol, Hossein; Rojas Jiménez, Keilor Osvaldo; Grossart, Hans-Peter; Bakhshi, Mounes (2019)

  Aquatic hyphomycetes equipped with a rich array of extracellular enzymes are involved in bioremediation of anthropogenic pollutants, plastics, aromatic contaminants and petroleum hydrocarbons. The current study contributes ...

• Pilze in aquatischen Ökosystemen 

  Grossart, Hans-Peter; Wyngaert, Silke Van den; Kagami, Maiko; Wurzbacher, Christian; Cunliffe, Michael; Rojas Jiménez, Keilor Osvaldo (2020-06)

  Pilze sind phylogenetisch und funktionell vielfältige, allgegenwärtige Bestandteile fast aller Ökosysteme der Erde, einschließlich aquatischer Ökosysteme, die sich von hochmontanen Seen bis in den tiefen Ozean erstrecken. ...

• Diversity and hidden host specificity of chytrids infecting colonial volvocacean algae 

  Wyngaert, Silke Van den; Rojas Jiménez, Keilor Osvaldo; Seto, Kensuke; Kagami, Maiko; Grossart, Hans-Peter (2018-05)

  Chytrids are zoosporic fungi that play an important, but yet understudied, ecological role in aquatic ecosystems. Many chytrid species have been morphologically described as parasites on phytoplankton. However, the majority ...

• Fungi in aquatic ecosystems 

  Grossart, Hans-Peter; Wyngaert, Silke Van den; Kagami, Maiko; Wurzbacher, Christian; Cunliffe, Michael; Rojas Jiménez, Keilor Osvaldo (2019-03)

  Fungi are phylogenetically and functionally diverse ubiquitous components of almost all ecosystems on Earth, including aquatic environments stretching from high montane lakes down to the deep ocean. Aquatic ecosystems, ...

• Highly diverse fungal communities in carbon-rich aquifers of two contrasting lakes in Northeast Germany 

  Perkins, Anita K.; Ganzert, Lars; Rojas Jiménez, Keilor Osvaldo; Fonvielle, Jeremy; Hose, Grant C.; Grossart, Hans-Peter (2019-10)

  Fungi are an important component of microbial communities and are well known for their ability to decompose refractory, highly polymeric organic matter. In soils and aquatic systems, fungi play an important role in carbon ...

• Taxonomical and functional diversity of Saprolegniales in Anzali lagoon, Iran 

  Masigol, Hossein; Khodaparast, Seyed Akbar; Mostowfizadeh Ghalamfarsa, Reza; Rojas Jiménez, Keilor Osvaldo; Woodhouse, Jason Nicholas; Neubauer, Darshan; Grossart, Hans-Peter (2020)

  Studies on the diversity, distribution and ecological role of Saprolegniales (Oomycota) in freshwater ecosystems are currently receiving attention due to a greater understanding of their role in carbon cycling in various ...

• Resistencia a desinfectantes y su relación con la resistencia a los antibióticos 

  Chacón Jiménez, Luz María; Rojas Jiménez, Keilor Osvaldo (2020)

  Objetivo: sistematizar los principales mecanismos de acción de los desinfectantes y describir mecanismos de resistencia comunes entre biocidas y antibióticos. Métodos: se realizó una revisión bibliográfica de artículos ...

• Microplastic ingestion by a herring Opisthonema sp. in the Pacific coast of Costa Rica 

  Bermúdez Guzmán, Luis; Alpízar Villalobos, Crista; Gatgens García, Johan; Jiménez Huezo, Gabriel; Rodríguez Arias, Marco; Molina Ureña, Helena; Villalobos Porras, Javier; Paniagua Pérez, Sergio; Vega Baudrit, José Roberto; Rojas Jiménez, Keilor Osvaldo (2020-07)

  Current knowledge of the presence of microplastics (MP) in marine species in tropical areas is still limited. The presence of MP was examined in the gastrointestinal content of 30 filter feeders of the herring Opisthonema ...

• Estudio de aditivos anticorrosivos para las aleaciones comerciales de la batería alcalina alumino-aire 

  Atencio Estrada, Anyie Priscilla (2020)

  La sociedad actual está avanzando hacia un modelo energético más responsable y sostenible. La punta de lanza de esta necesaria tendencia es el uso de fuentes de energía renovables y la reducción de las emisiones de CO2 ...

• Optical component 

  Padilla Víquez, Gerardo José (2010-02-15)

  El invento trata de un componente óptico, que comprende un primer reflector esférico y un segundo reflector esférico, el cual está colocado para reflejar un rayo de luz varias veces entre el primer reflector y el segundo ...

• Aparato y método para evaluar microfiltración en materiales 

  Conejo Rodríguez, Elian; Chavarría Bolaños, Daniel; Pozos Guillén, Amaury (2017-03-01)

  La presente invención se relaciona al campo de la investigación o análisis de materiales por medio de la determinación de sus características físicas o químicas, más específicamente con la determinación de la permeabilidad ...

• Clustering binary data by application of combinatorial optimization heuristics 

  Trejos Zelaya, Javier; Amaya Briceño, Luis Eduardo; Jiménez Romero, Alejandra; Murillo Fernández, Alex; Piza Volio, Eduardo; Villalobos Arias, Mario Alberto (2019-08-09)

  We study clustering methods for binary data, first defining aggregation criteria that measure the compactness of clusters. Five new and original methods are introduced, using neighborhoods and population behavior combinatorial ...

• The primary freshwater crabs of Guatemala (Decapoda: Brachyura: Pseudothelphusidae), with comments on their conservation status 

  Wehrtmann, Ingo S.; Magalhães, Célio; Orozco, Mónica N. (2016)

  The freshwater crabs of the family Pseudothelphusidae Ortmann, 1893 are restricted to the Neotropics and many species have an elevated risk of extinction. The majority of pseudothelphusids is considered to be data-deficient, ...

• Freshwater crabs as predators and prey: the case of Ptychophallus uncinatus Campos & Lemaitre, 1999 (Brachyura, Pseudothelphusidae) from Costa Rica, Central America 

  Wehrtmann, Ingo S.; Hernández Díaz, Dayan; Cumberlidge, Neil (2019)

  Primary freshwater crabs are an important component of the food web in aquatic ecosystems, but our knowledge about the role of these decapods as predators and as prey is far from complete. Here we report observations of ...

• Effects of temperature on the embryonic development and hatchling size of Betaeus emarginatus (Decapoda: Caridea: Alpheidae) 

  Wehrtmann, Ingo S.; López, Gastón A. (2003)

  Betaeus emarginatus is an alpheid shrimp inhabiting rock pool environments characterized by strong fluctuations of ambient factors. Here we describe the embryonic development of B. emarginatus, and analyse the effects of ...

• Grado de vulnerabilidad ante la presencia del cocodrilo americano (Crocodylus acutus) en cinco comunidades costeras de la Región Pacifico Central de Costa Rica, 2017 - 2018 

  Durán Apuy, Alejandro Alberto (2020-09)

  El conflicto entre seres humanos y animales silvestres es un fenómeno recurrente a nivel mundial y que se origina desde que ambos comparten los mismos hábitats y recursos. Entre el 2017 y el 2018, se evaluó el grado de ...

• Neotropical freshwater crabs (Decapoda: Pseudothelphusidae) shred leaves 

  Yang, Carol; Wehrtmann, Ingo S.; Wenger, Seth J.; Rugenski, Amanda T. (2020)

  Freshwater crabs are macroconsumers that are commonly found in Neotropical headwater streams that may play a key role in energy flow and nutrient cycling in detrital food webs. Although studies have examined the feeding ...

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