Spatial and temporal variations of Dinophyceae in subtropical reservoirs in southern Brazil

Knowledge of dinoflagellate diversity in Brazilian reservoirs is limited, especially in subtropical environments. We investigated as to how nutrients and other environmental variables influenced the biomass of Dinophyceae species in three subtropical ecosystems. The reservoirs Samuara, Faxinal, and...

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Bibliographic Details
Published in:	Hydrobiologia Vol. 654; no. 1; pp. 205 - 214
Main Authors:	de Souza Cardoso, Luciana, Fagundes, Paula Braga, Becker, Vanessa
Format:	Journal Article
Language:	English
Published:	Dordrecht Dordrecht : Springer Netherlands 01-10-2010 Springer Netherlands Springer Springer Nature B.V
Subjects:	Animal and plant ecology Animal, plant and microbial ecology Aquatic ecology Biological and medical sciences Biomedical and Life Sciences Climate Dinophyceae Durinskia Ecology freshwater Freshwater & Marine Ecology Fundamental and applied biological sciences. Psychology General aspects High temperature Life Sciences Nutrients Peridinium africanum Peridinium gatunense Peridinium umbonatum Plankton Primary Research Paper Reservoirs Seasonality Seasons Synecology temperate zones Zoology South America Brazil America Temperate climate Dinoflagellates Ecology Freshwater Seasonality Climate Algae Fresh water Seasonally Reservoir Spatial variation Time variation Aquatic environment Dinophyta Hydrobiology
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Summary:	Knowledge of dinoflagellate diversity in Brazilian reservoirs is limited, especially in subtropical environments. We investigated as to how nutrients and other environmental variables influenced the biomass of Dinophyceae species in three subtropical ecosystems. The reservoirs Samuara, Faxinal, and São Miguel were sampled fortnightly from 2002 to 2006, and eight dinoflagellate taxa were identified. High temperature was a determining factor for the occurrence of Peridinium africanum Lemmermann. Peridinium umbonatum Stein and P. willei Huitfeld-Kass required high concentrations of nutrients. P. willei was inversely related to temperature and directly related to nutrients. P. umbonatum Stein var. umbonatum Stein showed the largest range of tolerance toward resources. Durinskia baltica Carty & Cox and Peridinium gatunense Nygaard could be opportunistic, since they did not show any spatial or temporal pattern.
Bibliography:	http://dx.doi.org/10.1007/s10750-010-0382-9 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0018-8158 1573-5117
DOI:	10.1007/s10750-010-0382-9