Daily variation of zooplankton abundance and evenness in the Rosana reservoir, Brazil: biotic and abiotic inferences

Autor: Érica M. Takahashi, Fábio A. Lansac-Tôha, Juliana D. Dias, Claudia C. Bonecker
Jazyk: English<br />Spanish; Castilian<br />Portuguese
Rok vydání: 2014
Předmět:
Zdroj: Iheringia: Série Zoologia, Vol 104, Iss 1, Pp 21-31 (2014)
Druh dokumentu: article
ISSN: 1678-4766
DOI: 10.1590/1678-4766201410412131
Popis: The zooplankton community presents stochastic temporal fluctuation and heterogeneous spatial variation determined by the relationships among the organisms and environmental conditions. We predicted that the temporal and spatial zooplankton distribution is heterogeneous and discrete, respectively, and that the daily variation of most abundant species is related to environmental conditions, specifically the availability of resources. Zooplankton samples were collected daily at three sampling stations in a lateral arm of the Rosana Reservoir (SP/PR). The zooplankton did not present significant differences in abundance and evenness among sampling stations, but the temporal variation of these attributes was significant. Abiotic variables and algal resource availability have significantly explained the daily variation of the most abundant species (p
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