Abstract

ABSTRACT Souza Junior, A.N., Magalhaes, A., Pereira, L.C.C. and Costa, R.M. da, 2013. Zooplankton dynamics in a tropical Amazon estuary. In: Conley, D.C., Masselink, G., Russell, P.E. and O'Hare, T.J. (eds.) While some data are available on plankton diversity in Amazonian coastal ecosystems, little is known about the seasonal variation in the zooplankton community of the Taperacu estuary. In order to identify the zooplankton species in this estuary and to evaluate the relationship between these species and hydrological parameters, 48 samples were collected at a fixed station located in this estuary during rainy and dry season months. Salinity, temperature, pH, and dissolved oxygen varied significantly between seasons, and were directly influenced by rainfall. Chlorophyll a concentrations did not vary seasonally, although significant variation was recorded in nutrient concentrations. The zooplankton included seven phyla, of which the subclass Copepoda was the most diverse, with 17 species identified. Of th...

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