Results 71 to 80 of about 554 (146)

Phytoplankton variability in Lake Fraijanes, Costa Rica, in response to local weather variation

Revista de Biología Tropical, 2014
Phytoplankton species show a variety in morphology which is the result of adaptations to pelagic life including responses to fluctuations in water column dynamics driven by weather conditions.
Gerardo Umaña-Villalobos
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Effect of native and modified starches on nutritional and physiological performance of wild juveniles of red grouper (Epinephelus morio)

Ecosistemas y Recursos Agropecuarios, 2018
The aim of this study was to evaluate carbohydratesutilization by wild red grouper Epinephelus morio.Juveniles were fed during 93 d on a selection of starches: native raw cornstarch (RCS), waxy cornstarch (WCS), raw potato starch (RPS) and gelatinized ...
Ana Castillo, Leticia Callejas, Carlos Alfonso Álvarez-González, Carlos Maldonado, Gerard Cuzon, Martha Gabriela Gaxiola-Cortés   +5 more
doaj   +1 more source

Variación estructural de la comunidad perifítica colonizadora de sustratos artificiales en la zona de ritral del río Medellín, Colombia

Revista de Biología Tropical, 2007
Se colocaron muestreadores de material acrílico con portaobjetos a nivel subsuperficial en dos estaciones de recolección en la parte alta del río Medellín.
Yimmy Montoya M, John J Ramírez R
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Hydrochemistry, ostracods and diatoms in a deep, tropical, crater lake in Western Mexico

Journal of Limnology, 2013
Crater lakes are sensitive to natural and anthropogenic environmental changes and it is important to define and understand their current status in order to evaluate past changes related to climate variability and future ones associated with modern global
Margarita Caballero, Alejandro Rodriguez, Gloria Vilaclara, Beatriz Ortega, Priyadarsi Roy, Socorro Lozano-García   +5 more
doaj   +1 more source

Testing the feasibility of coral nurseries in an upwelling area in the North Pacific of Costa Rica

Frontiers in Marine Science
The decline of coral reefs has increased interest in ecological restoration. Due to the scarcity of coral gardening projects in the Eastern Tropical Pacific, improving our understanding of such techniques is key.
Sònia Fabregat-Malé, Sebastián Mena-González, Fabio Quesada-Perez, Juan José Alvarado, Juan José Alvarado, Juan José Alvarado   +5 more
doaj   +1 more source

Human dimensions of harmful algal blooms in coastal Peru: perceived impacts, adaptation, and governance challenges

Frontiers in Marine Science
Harmful algal blooms (HABs) can cause marine fauna mortality, human health risks, and fishery closures, thereby threatening coastal livelihoods. Despite increasing frequency and severity of HABs under climate-related and anthropogenic pressures, their ...
Jelto Makris, Tomasa Cuellar-Martinez, Arturo Aguirre-Velarde, Achim Schlüter, Michael Kriegl, Michael Kriegl   +5 more
doaj   +1 more source

Understanding the color variability and resolving taxonomic confusion in the sea cucumber Isostichopus badionotus (Echinodermata, Holothuroidea): a revision of the genus Isostichopus

European Journal of Taxonomy
Isostichopus badionotus (Selenka, 1867) is distributed in the Atlantic Ocean. It has been recognized as a species with highly variable intraspecific coloration.
Giomar H. Borrero-Pérez, Francisco A. Solís-Marín, Harilaos Lessios   +2 more
doaj   +1 more source

Limnología de un Lago Tropical de Alta Montaña, en Ecuador: características de los sedimentos y tasa de sedimentación

Revista de Biología Tropical, 2003
Se han realizado estudios sedimentológicos en el Lago San Pablo, un lago tropical de alta montaña, situado en los Andes del Ecuador, a 2 660 m sobre el nivel del mar. El lago presenta características propias de un estado eutrófico y, como consecuencia de
Günter Gunkel
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Estado del arte de la limnología de lagos de planos inundables (Ciénagas) en Colombia

Gestión y Ambiente, 2009
Colombia es uno de los países con mayor diversidad de especies y de ecosistemas en el planeta. Los lagos ubicados en llanuras de inundación o «ciénagas» (como comúnmente se las conoce en Colombia) comprenden un tipo de ecosistema acuático, que, no ...
Yimmy Montoya Moreno, Néstor Aguirre R
doaj   +2 more sources

Cambios nictemerales de variables físicas y químicas en la Ciénaga de Paticos, complejo cenagoso de Ayapel, Colombia

Revista de Biología Tropical, 2009
Se evaluó la variación nictemeral de algunas variables climáticas, físicas y químicas durante cuatro muestreos dentro del ciclo hidrológico en la Ciénaga de Paticos (8º21’08.2" N, 75º08’45.7" W). Entre las variables climáticas, la pluviosidad presentó la
Yimmy Montoya M, Néstor Aguirre R
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