Results 81 to 90 of about 5,114 (181)

Connecting a Trophic Model and Local Ecological Knowledge to Improve Fisheries Management: The Case of Gulf of Nicoya, Costa Rica

open access: yesFrontiers in Marine Science, 2019
Trophic models of the Ecopath with Ecosim (EwE) type and local ecological knowledge (LEK) have widely been applied to fisheries assessment and management.
Astrid Sánchez-Jiménez   +5 more
doaj   +1 more source

Cyanobacteria distribution and abundance in the Spanish water reservoirs during thermal stratification [PDF]

open access: yes, 2004
A study of the distribution and abundance of Cyanobacteria in 47 Spanish water reservoirs revealed a significant correlation between these algae and total phosphorus in the water.
Aldasoro Martín, Juan José   +2 more
core  

Environmental conditions and carbonate chemistry variability influencing coral reef composition along the Pacific coast of Costa Rica

open access: yesFrontiers in Marine Science
Coral reef development is influenced by a wide variety of factors, including temperature, salinity, nutrient concentrations, and carbonate chemistry. Studies focusing on physicochemical drivers of coral reef distribution and composition in the Eastern ...
Celeste Sánchez-Noguera   +7 more
doaj   +1 more source

VARIACIONES NICTEMERALES DE ALGUNAS VARIABLES CLIMÁTICAS, FÍSICAS Y QUÍMICAS EN UNA LAGUNA SOMERA EN GUATAPÉ (ANTIOQUIA), COLOMBIA NICTEMERAL VARIATION OF SOME CLIMATIC, PHYSICAL AND CHEMICAL VARIABLES ON SMALL LAKE IN GUATAPÉ (ANTIOQUIA), COLOMBIA

open access: yesActualidades Biológicas, 2008
Se evaluó la variación nictemeral de algunas variables climáticas, físicas y químicas durante dos días de muestreos separados por seis meses en dos épocas hidrológicas diferentes en una laguna tropical en el municipio de Guatapé (Antioquia), Colombia ...
Yimmy Montoya-M
doaj  

Zooplankton of large South American floodplain rivers [PDF]

open access: yes, 2014
En este trabajo se analizanlos conocimientos sobre el zooplanctonlótico, principalmente de las cuencas delOrinoco y Paraná, menos información seposee de la del Amazonas, Tocantins, SanFrancisco y Magdalena.
Jose, Susana Beatriz, Paggi, Juan Cesar
core   +1 more source

Effect of native and modified starches on nutritional and physiological performance of wild juveniles of red grouper (Epinephelus morio)

open access: yesEcosistemas 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   +5 more
doaj   +1 more source

Zooplankton characterisation of Pampean saline shallow lakes, habitat of the Andean flamingoes [PDF]

open access: yes, 2013
The lowland saline shallow lakes in the Pampa de las Lagunas (Argentina), constitute an important habitat for flamingoes Phoenicopterus chilensis Molina and Phoenicoparrus andinus (Philippii).
Barberis, Ignacio Martín   +4 more
core   +2 more sources

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

open access: yesRevista 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
doaj  

Efecto de la regulación de la cabecera del río Genil (Sierra Nevada, España) sobre la comunidad de macroinvertebrados acuáticos y la dieta larvaria de Rhyacophila nevada (Insecta : Trichoptera) [PDF]

open access: yes, 2004
Se analiza el efecto que un embalse (Embalse de Canales), situado en la parte alta de un río de montaña (Río Genil, Sierra Nevada, Granada, España), tiene sobre la comunidad de macroinvertebrados, y en especial sobre la dieta de las larvas del tricóptero
Alba-Tercedor, J., Bello, C. L.
core  

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