Effects of eutrophication on size and biomass of crustacean zooplankton in a tropical reservoir

This is a long-term study (1993-1998) on the effects of increasing eutrophication on the crustacean zooplankton structure in a eutrophic reservoir. The study first demonstrates that the eutrophication increase verified is a phenomenon well described by a single abiotic variable: total phosphorus. Du...

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Bibliographic Details
Published in:Brazilian journal of biology 2005-05, Vol.65 (2), p.325-338
Main Authors: Pinto-Coelhom, R M, Bezerra-Neto, J F, Morais, Jr, C A
Format: Article
Language:English
Subjects:
allometry
Animals
BIOLOGY
Biomass
Crustacea
Environmental Monitoring - methods
Eutrophication
Phosphorus - analysis
reservoir
Zooplankton
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Summary:This is a long-term study (1993-1998) on the effects of increasing eutrophication on the crustacean zooplankton structure in a eutrophic reservoir. The study first demonstrates that the eutrophication increase verified is a phenomenon well described by a single abiotic variable: total phosphorus. During the study period, zooplankton suffered extensive qualitative and quantitative changes. Significant size and biomass responses of certain zooplankton groups to the temporal variations of total phosphorus were found. These findings suggest that the variables size and biomass of major zooplankton groups should always be considered simultaneously in order to assess impacts caused by eutrophication on the structure of zooplankton.
ISSN:1519-6984
1678-4375
1519-6984
DOI:10.1590/s1519-69842005000200017