Artículos de revistas
Variação espacial e sazonal do zooplâncton nos reservatórios do sistema cantareira, Brasil
Fecha
2017-01-01Registro en:
Revista Ambiente e Agua, v. 12, n. 4, p. 666-679, 2017.
1980-993X
10.4136/ambi-agua.1935
S1980-993X2017000400666
2-s2.0-85021655183
S1980-993X2017000400666.pdf
Autor
Universidade Estadual Paulista (Unesp)
Universidade de São Paulo (USP)
Institución
Resumen
This study examined the spatial and seasonal variation of zooplanktonic communities and their relationship to the physical, chemical and biological properties of water in five reservoirs (Jaguari, Jacareí, Cachoeira, Atibainha e Paiva Castro) of the Cantareira system. Sampling was performed in May/June and November/December 2013 at 19 sites. To verify similarity of zooplankton attributes, we applied a two-way similarity analysis and a nonmetric multidimensional scaling. Relationship between biological and environmental descriptors was examined by Pearson correlation. A total of 35 taxa was identified. Rotifers were predominant in terms of species richness and juvenile copepods followed by Bosmina freyi were the most abundant. Overall, the sites showed mesotrophic conditions, with the exception of the Jaguari reservoir, which was considered eutrophic. Based on the analysis, spatial and seasonal variations and correspondence between environmental indicators and densities were observed. Reservoir morphometry, water retention time, ecological interactions and water quality might explain the observed trend.