Article (Scientific journals)
Covariation between zooplankton community composition and cyanobacterial community dynamics in Lake Blaarmeersen (Belgium)
van Gremberghe, Ineke; Van Wichelen, Jeroen; Van der Gucht, Kathleen et al.
2008In FEMS Microbiology Ecology, 63, p. 222 - 237
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Keywords :
cyanobacteria; mesotrophic lake; zooplankton; DGGE; molecular diversity; ribosomal RNA
Abstract :
[en] The cyanobacterial community composition in the mesotrophic Lake Blaarmeersen was determined by denaturing gradient gel electrophoresis (DGGE) of PCRamplified 16S rRNA gene fragments during two consecutive years to assess the importance of different classes of explanatory variables (bottom-up and top-down factors, physical variables and phytoplankton) in cyanobacterial community dynamics. The most dominant cyanobacteria in Lake Blaarmeersen were Synechococcus (three genotypes), Limnothrix redekei and Anabaena/Aphanizomenon. Analyses of Similarity revealed that the cyanobacterial community in Lake Blaarmeersen differed significantly between the growing season and the winter season as well as between the epilimnion and hypolimnion during the stratified periods. Mantel tests revealed significant correlations between the DGGE data and bottom-up factors, physical variables, the phytoplankton community composition and, interestingly, the zooplankton community composition. In general, the zooplankton community composition (especially the cladoceran community) was more important in structuring the cyanobacterial community than the total zooplankton biomass. This study shows that grazing zooplankton communities can have a relatively strong impact on the cyanobacterial community dynamics and that this impact can be equally important as bottom-up processes regulated by nutrient concentrations and/or physical variables.
Disciplines :
Aquatic sciences & oceanology
Environmental sciences & ecology
Microbiology
Author, co-author :
van Gremberghe, Ineke
Van Wichelen, Jeroen
Van der Gucht, Kathleen
Vanormelingen, Peter
D'hondt, Sofie
Boutte, Christophe
Wilmotte, Annick  ;  Université de Liège - ULiège > Département des sciences de la vie > Enzymologie
Vyverman, Wim
Language :
English
Title :
Covariation between zooplankton community composition and cyanobacterial community dynamics in Lake Blaarmeersen (Belgium)
Publication date :
February 2008
Journal title :
FEMS Microbiology Ecology
ISSN :
0168-6496
eISSN :
1574-6941
Publisher :
Blackwell Publishing, Oxford, United Kingdom
Volume :
63
Pages :
222 - 237
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
B-BLOOMS
Funders :
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
Available on ORBi :
since 24 July 2009

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