Results 31 to 40 of about 9,168 (198)

Structure and dynamics of phytoplankton community in the Botafogo reservoir-Pernambuco-Brazil [PDF]

, 2009
The aim of the present study was to investigate the structure and dynamics of the phytoplankton in the Botafogo reservoir-PE-Brazil. Phytoplankton assemblages were identified from current literature and density was estimated using an inverted microscope.
BITTENCOURT-OLIVEIRA, Maria do Carmo, LIRA, Giulliari Alan da Silva Tavares de, MOURA, Ariadne do Nascimento   +2 more
core   +2 more sources

Biomonitoring ecological status of two reservoirs of the Brazilian semi-arid using phytoplankton assemblages (Q index)

Acta Limnologica Brasiliensia, 2015
AimAssess whether the assembly index is a suitable tool for biomonitoring of aquatic ecosystems of semi-arid environment.MethodsMonthly, samples were collected between October 2011 and May 2012 in Santa Cruz do Apodi (5°43'59"S; 46" 00 119 "W) and Pau ...
Ana Paula Cardoso Silva, Ivaneide Alves Soares da Costa   +1 more
doaj   +1 more source

Clasificación de grupos morfofuncionales del fitoplancton en seis sistemas lénticos de las regiones Caribe, Andina y Amazónica de Colombia

, 2020
The classification based on phytoplankton traits and functional groups allowed a feasible and objective approach in the evaluation of six tropical systems of different types, origin, morphology, and limnological condition in the Amazon, Andean, and ...
E. Hernández, Néstor Aguirre, K. Palacio, Jaime Palacio, J. J. Ramírez, S. Duque, Martha Mogollón, Carla Kruk   +7 more
semanticscholar   +1 more source

Xanthophyceae planctônicas da planície de inundação do alto rio Paraná - DOI: 10.4025/actascibiolsci.v27i1.1353

Acta Scientiarum: Biological Sciences, 2008
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, Paula Aparecida Federiche Borges, Sueli Train, Luzia Cleide Rodrigues   +3 more
doaj   +1 more source

Diatom associations in shelf waters off Paraná State, Southern Brazil: annual variation in relation to environmental factors

Brazilian Journal of Oceanography, 2004
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, Frederico Pereira Brandini   +1 more
doaj   +1 more source

Análise da estrutura de comunidades fitoplanctônicas e de alguns fatores abióticos em trecho do Rio Jacuí, Rio Grande do Sul, Brasil Analysis of the structure of the phytoplanktonic communities and some abiotic factors on a stretch of the Jacuí River, Rio Grande do Sul, Brazil

Acta Botânica Brasílica, 1988
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, Lezilda Carvalho Torgan, Eduardo A Lobo, Lise Anne Wunderlich Herzog   +3 more
doaj   +1 more source

Fitoplancton en el sitio RAMSAR “Esteros del Iberá” (Argentina): Una comparación entre años de sequía e inundación

Bonplandia
En este estudio se analiza la abundancia, diversidad, riqueza de especies y equitatividad del fitoplancton en los Esteros del Iberá (Argentina), en dos condiciones climáticas contrastantes, tanto para ambientes leníticos y lóticos. Los análisis mostraron
Marina E. Forastier, F. I. Contreras, M. C. Franceschini   +2 more
semanticscholar   +1 more source

Spectral mixture analysis for water quality assessment over the Amazon floodplain using Hyperion/EO-1 images

Revista Ambiente & Água, 2007
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, Evlyn Márcia Leão de Moraes Novo, Conrado de Moraes Rudorff   +2 more
doaj   +1 more source

Implementação de um Ensaio Piloto para Identificação e Quantificação de Fitoplâncton no âmbito da Avaliação Externa da Qualidade [PDF]

, 2016
O Programa Nacional de Avaliação Externa da Qualidade, implementou em 2015 um ensaio piloto no âmbito da dentificação e quantificação de fitoplâncton. O fitoplâncton é um importante indicador de qualidade biológica utilizado na classificação do estado ...
Brito, Cristina, Cardoso, Ana, Clemente, Vera, Correia, Helena, Faria, Ana Paula, Paulino, Sérgio, Silva, Susana Pereira   +6 more
core  

Diversity and dominance in bird assemblages across habitats in the Ñeembucú wetlands complex

Biotropica, Volume 56, Issue 5, September 2024.
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, Patricia Salinas, Medes Mendoza, Griselda Zárate, Fátima Piris da Motta, Alberto Esquivel, Karina Núñez, Fernando Silla   +7 more
wiley   +1 more source