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Diel variation in near-shore great lakes fish assemblages and implications for assessment sampling and coastal management

Journal of Freshwater Ecology

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Abstract

I compared fish assemblages captured in three different microhabitats (shoreline, pelagic near-shore, and benthic near-shore) during day and night fishing in different protection (inside bay or tributary vs. outside in Lake Ontario proper) and turbidity regimes of four near-shore areas of Lake Ontario. The effects of diel movement and availability to gear were clearly evident. Fish assemblages were consistently and significantly more diverse at night than during the day, with nighttime assemblages often being supersets of daytime assemblages. Evidence for a turbidity effect was much weaker than the effects of nocturnal movements and changes in availability to the gear associated with darkness. Nighttime sampling is more likely to capture the full array of species in near-shore areas of the Great Lakes than daytime sampling.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Diel variation in near-shore great lakes fish assemblages and implications for assessment sampling and coastal management
Series title:
Journal of Freshwater Ecology
Volume
23
Issue:
1
Year Published:
2008
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Freshwater Ecology
First page:
131
Last page:
142