Caracterização das comunidades da macroinfauna associada à vegetação de marismas (Spartina alterniflora) na ilha de Algodoal/Maiandeua (Pará)
The present study is to characterize the macroinfaunal communities associated with saltmarsh vegetation at Algodoal/Maiandeua island, on the northeast coast of Pará Coast. Samples were performed over macroinfauna, sediment and vegetation in three periods (November 2007 , April 2008 and November 2...
| Autor principal: | SILVA, Marcos Vinícius Barros da |
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| Grau: | Trabalho de Conclusão de Curso - Graduação |
| Publicado em: |
2019
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| Assuntos: | |
| Acesso em linha: |
http://bdm.ufpa.br/jspui/handle/prefix/1778 |
| Resumo: |
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The present study is to characterize the macroinfaunal communities associated with
saltmarsh vegetation at Algodoal/Maiandeua island, on the northeast coast of Pará Coast.
Samples were performed over macroinfauna, sediment and vegetation in three periods
(November 2007 , April 2008 and November 2008) to determination of possible changes in
abundance and composition of organisms relate to local characteristics of vegetation and
sediment. 36 replicates for the macroinfauna associated with saltmarshes were collected; 12
individual replicas for vegetation and others 12 individual replicas for sediment. The main
results showed that the amount of fine sediments and organic matter content increased over
the periods and that were higher in the upper layers of sediment. For vegetation, an increase
of height and density of vegetation was observed throughout the period. The macroinfauna
also showed temporal changes in abundance and diversity of species associated with
environmental changes and showed significant increase among periods for both
characteristics. The abundance and diversity of macroinfauna were concentrated in the upper
layers of sediment. In conclusion, processes of ecological succession seem to be occurring in
the structure of macroinfauna associated to saltmarsh vegetation at Algodoal / Maiandeua
island. This process appears to be connected with the development of saltmarsh. |