Zooplankton community density in relation to water level fluctuations and inorganic turbidity in an Amazonian lake, "Lago Batata", State of Pará, Brazil

Abstract

This research concems the pattems of variations in the zooplankton community density in Batata Lake. State of Pari, Brazil. Four collections were made dunng one year at distinct phases of the regional hydrological cycle. Together with the zooplankton community density, the water temperature, transparency, pH, concentration of suspended solids, chlorophyll-a and dissolved oxygen were detennined. The chief objectives of the work were the obsewation of the spatial and temporal variations of the zooplankton community density and their relationships to the ambient variables measured; and the identification of the possible influente on these organisms of the fine particulate clays.