Detalhes bibliográficos
| Ano de defesa: |
2016 |
| Autor(a) principal: |
Rocha, Barbbara da Silva
 |
| Orientador(a): |
Nabout, João Carlos
|
| Banca de defesa: |
Vieira, Ludgero Cardoso Galli,
Bini, Luis Mauricio,
Nabout, João Carlos |
| Tipo de documento: |
Dissertação
|
| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
Universidade Federal de Goiás
|
| Programa de Pós-Graduação: |
Programa de Pós-graduação em Ecologia e Evolução (ICB)
|
| Departamento: |
Instituto de Ciências Biológicas - ICB (RG)
|
| País: |
Brasil
|
| Palavras-chave em Português: |
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| Palavras-chave em Inglês: |
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| Área do conhecimento CNPq: |
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| Link de acesso: |
http://repositorio.bc.ufg.br/tede/handle/tede/6274
|
Resumo: |
One of the main focuses of ecology and biogeography has been better understanding as historical factors, environmental factors and dispersal ability influence the pattern of species distribution. Besides the environmental conditions and space being considered important components to control the variation in communities, another factor that can influence the beta diversity, but has been little studied, is the land use type. We aimed determine the relative influence of local, spatial components (directional and non-directional) and land use in the taxonomic and functional composition of phytoplankton and zooplankton communities in tropical reservoirs. Data was collected in 25 sampling points in reservoirs in the Rio Preto Basin, which is located in the Federal District-DF, Brazil. We performed a partial redundancy analysis to determine the influence of each component. The space was the only component with significant influence over the two groups (phytoplankton and zooplankton) and both approaches. Local variables had no significant influence on the variation of the communities, as well as the land use. Given the importance of space in the analyzed communities, we applied a protocol based on an spatial autocorrelation analysis, which indicated that the spatial pattern of the communities could be purely associated with dispersal by neutral factors. Our results demonstrated that the spatial component can be significant even in small scale studies to organisms with passive dispersal. Furthermore, it is important consider the connectivity among the environments in investigations with these microorganisms. as well as the use of the functional approach for studies of planktonic distribution, because of it show patterns similar to those found in the taxonomic approach. |
