Zooplankton grazing and phytoplankton species richness: Field tests of the predation hypothesis1
Limnology and OceanographyPublished 1 March 1979Open access
Edward McCauley, Frédéric Briand
Citations172
SJR quartileQ1
SJR score1.57
SNIP1.27
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TL;DR
Lowering the herbivore levels may cause an intensification of exploitative competition among phytoplankton, which favors edible species and a few inedible algae like Synedra at the expense of many inedibles species that are eliminated.
Abstract
The hypothesis that herbivory plays a major role in the maintenance of high algal diversity was tested over a 2‐year period in polyethylene enclosures at Heney Lake, Quebec. Reduction of grazing pressure resulted in a significant decrease in the number of inedible species, whereas the diversity of edible algae remained unaffected. Lowering the herbivore levels may cause an intensification of exploitative competition among phytoplankton, which favors edible species and a few inedible algae like Synedra at the expense of many inedible species that are eliminated.
Keywords
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