Phytoplankton Composition
Mostrando 25-36 de 59 artigos, teses e dissertações.
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25. Estrutura organizacional do fitoplâncton nos sistemas lóticos e lênticos da bacia do Tietê-Jacaré (UGRHi-Tietê-Jacaré) em relação à qualidade da água e estado trófico
The aim of this work was to study the phytoplankton structure of lentic and lotic systems of Tietê/Jacaré basin located in São Paulo State and the relationship between the composition and dominance of phytoplankton organisms with the water quality and trophic state of the rivers and lakes of this basin. The Tietê/Jacare basin is composed by three main ri
Publicado em: 2009
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26. Estrutura e produtividade da comunidade fitoplanctÃnica de um estuÃrio tropical (SirinhaÃm, Pernambuco, Brasil)
The estuary of SirinhaÃm river located in the district of SirinhaÃm, Southern of Pernambuco state, (8Â34â-8Â37âS e 35Â04â-35Â01âW), was evaluating aiming to catalog the phytoplankton community, estimating its productive capacity, the temporal spatial dynamics and the principal environmental variables that affect its composition. The samplings of th
Publicado em: 2009
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27. Distribuição vertical e sazonal da comunidade fitoplanctônica em dois reservatórios eutróficos do Estado de Pernambuco
The dynamics of the phytoplankton community in aquatic ecosystems provides considerable diagnostic information and serves as a sensitive tool for the indication of environmental changes, enabling the prediction of changes in any body of water. The vertical distribution of these organisms in eutrophic reservoirs remains an under-explored field of study, but i
Publicado em: 2009
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28. Estudo das interações fitoplâncton-protozooplâncton no reservatório de Barra Bonita, SP, com ênfase na toxicidade de microcistinas
The increasing eutrophication of aquatic environments, resulting from the human activities, is related to cyanobacterial blooms that are described, all over the world, as the agents causing toxicity and death in humans, domestic and wild animals. Recently, studies are being conducted aiming to prove the possibility of the biotransference of the cyanobacteria
Publicado em: 2009
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29. Ecology of phytoplankton community in two branches of Billings Reservoir (São Paulo, SP) with different trophic states / Ecologia da comunidade fitoplactônica em dois braços da Represa Billings (São Paulo, SP) com diferentes graus de trofia
The aim of this work was to compare the phytoplankton community composition and diversity in Rio Grande and Taquacetuba branches (Billings Reservoir) and to determinate its controlling factors. Water samples were collected in six depths on February, May, August and November 2005. Physical and chemical variables and the phytoplankton community were analyzed.
Publicado em: 2008
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30. FITOPLÂNCTON DE UM LAGO DE INUNDAÇÃO AMAZÔNICO (LAGO CATALÃO, AMAZONAS BRASIL): ESTRUTURA DA COMUNIDADE, FLUTUAÇÕES ESPACIAIS E TEMPORAIS
This study analyzed the attributes of the phytoplankton community (species richness, diversity, equitability, density, size structure and rate of community compositional change), associated with some physical and chemical characteristics of a floodplain lake from Central Amazon, Brazil, (Lake Catalão) during the low water (2006) and high (2007) periods , th
Publicado em: 2008
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31. A comunidade planctÃnica como indicadora da qualidade da Ãgua em viveiros de cultivo de camarÃes no nordeste do Brasil
A disease of unknown origin is occurring in marine shrimp (Litopenaeus vannamei) ponds causing a decrease in the survival rate of cultured organisms. The disease named Idiopathic Abdominal Necrosis (IAN) have been confirmed in ponds from 14 farms located in PiauÃ, MaranhÃo, Cearà and Rio Grande do Norte states, Northeastern Brazil. In order to contribute
Publicado em: 2008
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32. Ecologia trÃfica do Octocoral Carijoa riisei (Duchassaing &Michelotti, 1860) (Cnidaria, Alcyonacea) em Porto de Galinhas (Pernambuco, Brasil)
Carijoa riisei is the most abundant species of octocoral for the coast of Pernambuco. To know the importance of local species in the food chain, a search was conducted, divided into two stages: the first aiming to discover the food composition and possible seasonal and bathymetric fluctuations, and the second focusing on the degree of selectivity of the octo
Publicado em: 2008
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33. SÃrie temporal do mezooplÃncton do sistema estuarino de Barra das Jangadas, Pernambuco, Brasil / SÃrie temporal do mezooplÃncton do sistema estuarino de Barra das Jangadas, Pernambuco, Brasil
The knowledgement of the planktonic community is very important, as the phytoplankton produce the organic matter through the photosynthesis, and the zooplankton is na important link in the energy transfer in the form phytoplanktonbacterioplankton or in he form of organic particle detritus to the other throphic levels. Studies about the mesozooplankton were c
Publicado em: 2008
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34. Ecology of zooplanktonic communities associated with palm swamp ponds in Uberlândia, MG / Ecologia de comunidades zooplanctônicas em lagoas associadas a veredas no município de Uberlândia, MG
Ponds of veredas, a palm swamp environment associated with headwaters, appears among the most important continental aquatic habitats on the planet. In these ponds, banks of macrophytes occurs with frequency, maintaining the aquatic productivity and the increase of habitat heterogeneity, thereby generating great biological diversity in their environment. One
Publicado em: 2008
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35. Composição e abundância do fitoplâncton do sudoeste da Reserva Biológica do Lago Piratuba (Amapá, Brasil)
The present study was done on the southwest of the Lago Piratuba Biological Reserve, on Araguari river floodplain, Amapá coast region, Brazil. The environments were the lakes Comprido de Cima, Bacia, Lodão, Ventos, Grande and Comprido de Baixo and the Araguari River downstream. This region is submitted to an influence of the semidiurnal tide from the Amazo
Publicado em: 2007
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36. O fitoplÃncton na zona de arrebentaÃÃo de praias urbanas da RegiÃo Metropolitana do Recife, Pernambuco, Brasil
This study is a contribution to the space-time knowledge on the phytoplankton community of Recife Metropolitan Area beaches, southern Pernambuco coast, Brazil. Samples were collected with 45 μm-mesh plankton net and bottle during the rainy (May, June and July/2005) and dry seasons (November and December/2005, and January/2006) at BrasÃlia Formosa, Boa
Publicado em: 2007