Buscar
Mostrando ítems 41-50 de 309
Fatty acids as trophic biomarkers in vitellogenic females in an impounded tropical river
(SPRINGER, 2010)
Fatty acids have been used in marine biogeochemistry as food chain biomarkers, but in freshwater these studies are rare. In order to evaluate the fatty acid potential as biomarkers in freshwater, their profile was analyzed ...
Reproductive strategies of two Curimatidae species in a Mogi Guaçu impoundment, upper Paraná river basin, São Paulo, Brazil
(2012-10-01)
Considering that reproduction studies are fundamental to understand the life cycle of organisms, this study aimed to investigate the reproductive strategies of saguirus Cyphocharax nagelii and Steindachnerina insculpta in ...
Short-term dynamics of a Melosira population in the plankton of an impoundment in central Chile
(1986)
Relationships among the chlorophyll-specific photosynthetic behaviour of a Melosira-dominated phytoplankton, net variations in the quantity of Melosira in suspension, the rates of sinking loss of Melosira cells and did ...
South American Dry Chaco rangelands: Positive effects of cattle trampling and transit on ecohydrological functioning
(Wiley, 2022-12)
Livestock production in drylands requires consideration of the ecological applications of ecohydrological redistribution of water. Intensive cattle trampling and the associated increase of surface runoff are common concerns ...
Ecologia trófica da ictiofauna do rio Iguaçu-Pr sob efeitos do represamento de Salto Caxias.
(Universidade Estadual de MaringáBrasilPrograma de Pós-Graduação em Ecologia de Ambientes Aquáticos ContinentaisUEMMaringáDepartamento de Biologia, 2018)
Mudanças climáticas e hidrelétricas : efeitos sinérgicos sobre peixes migradores do Brasil.Climate change and hydroeletrics : synergistic effects on migratory fish of Brazil.
(Universidade Estadual de MaringáBrasilPrograma de Pós-Graduação em Ecologia de Ambientes Aquáticos ContinentaisUEMMaringáDepartamento de Biologia, 2018)