The short-term effects of planktivorous fish foraging in the presence of artificial light at night on lake zooplankton.

J Plankton Res

Department of Hydrobiology, Institute of Functional Biology and Ecology, Faculty of Biology, University of Warsaw at Biological and Chemical Research Centre, żwirki i Wigury 101, 02-089 Warsaw, Poland.

Published: September 2022

Numerous studies have revealed that artificial light at night alters the natural patterns of light in space and time and may have various ecological impacts at different ecological levels. However, only a few studies have assessed its effect on interactions between organisms in aquatic environments, including predator-prey interactions in lakes. To fill this gap, we performed a preliminary enclosure experiment in which we compared the foraging effect of juvenile perch () on a natural lake zooplankton community in the absence and presence of light of high-pressure sodium (HPS) lamps mimicking artificial light emitted by a boat. The results revealed that even short-lasting exposure to HPS lamps may result in increasing fish predation, which in turn decreased the mean body size in zooplankton populations (e.g. ) and affected the relative proportion between different taxa in zooplankton communities.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9692195PMC
http://dx.doi.org/10.1093/plankt/fbac046DOI Listing

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