Please use this identifier to cite or link to this item: https://repositorio.inpa.gov.br/handle/1/18052
Title: Effect of atypical rainfall on lotic zooplankton: Comparing downstream of a reservoir and tributaries with free stretches
Authors: Perbiche-Neves, Gilmar
Serafim, Moacyr Jr
Portinho, Jorge Laço
Shimabukuro, Erika Mayumi
Ghidini, André Ricardo
Brito, Lineu de
Keywords: Community Structure
Comparative Study
Freshwater Ecosystem
Hypothesis Testing
Lotic Environment
Rainfall
Reservoir Characterization
Sampling
Spatial Distribution
Tributary
Zooplankton
Cladocera
Copepoda
Rotifera
Issue Date: 2012
metadata.dc.publisher.journal: Tropical Ecology
metadata.dc.relation.ispartof: Volume 53, Número 2, Pags. 149-162
Abstract: To contribute to the knowledge of lotic zooplankton from dammed and free stretches, we tested the hypothesis that the ecological attributes are different between these environments, which are subjected to several effects caused by different hydrological conditions. The study was carried out in the low Iguaçu river, a large hydrographic basin in the south of Brasil. Two samplings were performed, one in the dry period (April/04) and the other in the atypical rainy period (July/04), in five stations downstream a large reservoir, and other 12 stations in four tributaries representing the upper, intermediate and low regions of each river. The observations suggest a clear spatial distribution of zooplankton in lotic stretches subjected or not to damming, mainly due to the effects of physical, chemical and biological variables. Furthermore, the atypical rainfall promoted alterations in community structure when compared to the dry period. © International Society for Tropical Ecology.
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