Results 31 to 40 of about 576 (105)
Existem poucos estudos abordando a biodiversidade fitoplanctônica em ambientes aquáticos de planície de inundação, o que sugere a necessidade de estudos taxonômicos visando à conservação e recuperação desses ecossistemas.
Vânia Mara Bovo-Scomparim +3 more
doaj +1 more source
The seasonal variation of diatoms in the inshore waters off Paraná State, Southern Brazil was investigated to analyse their temporal dynamics and to detect the main environmental constraints of the planktonic community. Biomass peaks occurred from May to
Luciano Felício Fernandes +1 more
doaj +1 more source
São apresentados os resultados do estudo do fitoplâncton e de algumas variáveis físicas e químicas da água em um trecho do Rio Jacuí, com base em amostragens realizadas em julho de 1986.
Zulanira Meyer Rosa +3 more
doaj +1 more source
Water composition undergoes complex spatial and temporal variations throughout the central Amazon floodplain. This study analyzed the spectral mixtures of the optically active substances (OASs) in water with spaceborne hyperspectral images. The test site
Lênio Soares Galvão +2 more
doaj +1 more source
O objetivo do presente estudo foi avaliar a influência da variação sazonal das condições ambientais sobre os atributos estruturais da comunidade de algas perifíticas em Eleocharis acutangula (Roxb.) Schult (Cyperaceae) na zona litorânea do Lago das ...
Vanessa Moraes Camargo, Carla Ferragut
doaj +1 more source
Diversity and dominance in bird assemblages across habitats in the Ñeembucú wetlands complex
We analyzed how the composition of neotropical bird assemblages vary among habitats (riparian forests, natural grasslands, savannas, and anthropized sites) in the Ñeembucú Wetlands Complex, the largest wetland system in Paraguay. We found a high bird richness (209 species) that contrasted with a pattern of dominance by a small set of 16 species that ...
Fátima Ortiz +7 more
wiley +1 more source
DENSIDADE PLANCTÔNICA DO POLICULTIVO DE Litopenaeus vannamei E Oreochromis niloticus
Um experimento foi realizado durante 95 dias para avaliar as densidades planctônicas do policultivo do camarão branco Litopenaeus vannamei e da tilápia do Nilo Oreochromis niloticus.
Luis Otavio Brito +4 more
doaj +1 more source
Spatial and temporal dynamics of functional groups of phytoplankton in a tropical shallow lake
Aim To evaluate the structure and dynamics of functional phytoplankton groups (FGs) over a macrophyte cover gradient and their relations with environmental variable in small, shallow clear-water lake.
Núbia da Silva +6 more
doaj +1 more source
La composición y la abundancia del fitoplancton en el lago Sauce Grande Shallow se estudiaron durante el otoño de 2010. Se establecieron tres sitios de muestreo: En la salida del río Sauce Grande (E1), a la entrada del río Sauce Grande en el cuerpo de ...
Nora Cristina Ferrer +3 more
doaj
Is it possible to evaluate the ecological status of a reservoir using the phytoplankton community?
Aim: The present study aims to evaluate the ecological status of the Broa reservoir through the application of the ecological index Evenness E2 on phytoplankton. Methods Phytoplankton samples from surface were obtained during the dry period (June/2015)
Aline Martins Vicentin +3 more
doaj +1 more source

