Phytoplankton community response to hydrological variations in oxbow lakes with different levels of connection to a tropical river

Autor(es)

Granado, D. C. ^[1] ; Henry, R. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista UNESP, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Hydrobiologia; v. 721, n. 1, p. 223-238, JAN 2014.
• Citações Web of Science: 8

Resumo

Changes to the structure of the phytoplankton community and to the physical and chemical variables of the water were investigated in oxbow lakes with different levels of connection to a tropical river and subject to annual hydrological pulse variations. The selected lentic environments are located at the mouth region of the main tributary in a reservoir built for water storage and electric power generation. The temporal variation of phytoplankton in the studied lentic environments can be attributed mainly to the hydrological level of the river. A similar variation pattern of the ecological attributes was observed in the structure of the phytoplankton community in the connected lakes and Paranapanema River, evidencing the high degree of association that the lacustrine systems maintain with the river. The highest values of richness and diversity for connected environments were observed at the end of the emptying period and in the drought. However, considering the isolated lake, the highest values of these attributes were recorded during the flooding period. (AU)

• Processo FAPESP: 03/12473-9 - Influencias do ciclo hidrossedimentologico na estrutura da comunidade fitoplanctonica de tres lagoas marginais do sistema rio-planicie de inundacao localizado na zona de desembocadura do rio paranapanema.
• Beneficiário: Danielli Cristina Granado Romero
• Modalidade de apoio: Bolsas no Brasil - Doutorado