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- Title
Responses of the zooplankton community to the formation of a small reservoir on the Caveiras River, southern Brazil.
- Authors
dos Santos Picapedra, Pablo Henrique; Fernandes, Cleomar; Baumgartner, Gilmar; Sanches, Paulo Vanderlei
- Abstract
We investigated changes in the species richness, abundance, and composition of the zooplankton community in response to the formation of a small reservoir in the Caveiras River, southern Brazil. Zooplankton were collected using a motor-pump and a plankton net (68 μm mesh), with 600 L of water filtered per sample. Sampling occurred during the pre- (April, August, and December 2011) and postimpoundment (July and October 2013, and January 2014) phases of the Caveiras River. We identified 86 taxa in this study, and rotifers were the predominant group. The species richness and abundance of the zooplankton increased after the filling of the reservoir. Furthermore, the zooplankton community showed a clear change in the species composition between the phases before and after the formation of the reservoir, with the emergence of typical planktonic species. Changes in the structure of the zooplankton community were related to changes in limnological characteristics due to the impoundment of the river, mainly in the availability of food and in the concentration of nutrients.
- Subjects
BRAZIL; SANTA Catarina (Brazil : State); ZOOPLANKTON; WATER filters; SPECIES diversity; ROTIFERA; DAM design &; construction
- Publication
Acta Scientiarum: Biological Sciences, 2021, Vol 43, Issue 1, p1
- ISSN
1679-9283
- Publication type
Article
- DOI
10.4025/actascibiolsci.v43i1.56924