Changes in phytoplankton, benthic invertebrate and fish assemblages of boreal lakes following invasion by Gonyostomum semen

Summary 1. During recent decades, Gonyostomum semen populations have spread in northern temperate regions forming dense blooms that may dominate the phytoplankton assemblage for extended periods. In this study, we investigate the effects of G. semen blooms in boreal brown water lakes with special em...

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Bibliographic Details
Published in:Freshwater biology 2011-10, Vol.56 (10), p.1937-1948
Main Authors: TRIGAL, CRISTINA, GOEDKOOP, WILLEM, JOHNSON, RICHARD K.
Format: Article
Language:English
Subjects:
benthic secondary production
Chaoborus flavicans
Ecology
Ekologi
Environmental Sciences
fish
Freshwater
Gonyostomum semen
Invertebrata
macroinvertebrates
Miljövetenskap
phytoplankton blooms
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Summary:Summary 1. During recent decades, Gonyostomum semen populations have spread in northern temperate regions forming dense blooms that may dominate the phytoplankton assemblage for extended periods. In this study, we investigate the effects of G. semen blooms in boreal brown water lakes with special emphasis on phytoplankton, fish and benthic invertebrate assemblages using data from 10 boreal lakes sampled annually over a 10‐year period. 2. Significant differences in phytoplankton and benthic invertebrate assemblages were found between lakes with high (3.01 mm3 L−1; >80% phytoplankton biomass) and lakes with low G. semen biomass (0.03 mm3 L−1;
ISSN:0046-5070
1365-2427
1365-2427
DOI:10.1111/j.1365-2427.2011.02615.x