Taxonomic and functional differences between winter and summer crustacean zooplankton communities in lakes across a trophic gradient

K. Shchapov, P. Wilburn, A. J. Bramburger, G. M. Silsbe, L. Olmanson, C. J. Crawford, E. Litchman, T. Ozersky

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Despite increasing interest in winter limnology, few studies have examined under-ice zooplankton communities and the factors shaping them in different types of temperate lakes. To better understand drivers of zooplankton community structure in winter and summer, we sampled 13 lakes across a large trophic status gradient for crustacean zooplankton abundance, taxonomic and functional community composition and C/N stable isotopes. Average winter zooplankton densities were one-third of summer densities across the study lakes. Proportionally, cladocerans were more abundant in summer than winter, with the opposite pattern for calanoids and cyclopoids. In green (eutrophic) lakes, zooplankton densities were higher under the ice than in brown (dystrophic) and blue (oligotrophic) lakes, suggesting better conditions for zooplankton in productive lakes during winter. Overall, zooplankton communities were more similar across lakes under the ice than during the open water season. Feeding group classification showed a decrease in herbivore abundance and an increase in predators from summer to winter. C/N stable isotope results suggested higher lipid content in overwintering zooplankton and potentially increased reliance on the microbial loop by winter zooplankton. Our results show substantial variation in the seasonality of zooplankton communities in different lake types and identify some of the factors responsible for this variation.

Original languageEnglish (US)
Pages (from-to)732-750
Number of pages19
JournalJournal of Plankton Research
Volume43
Issue number5
DOIs
StatePublished - Sep 1 2021

Bibliographical note

Publisher Copyright:
© 2021 The Author(s) 2021. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permission@oup.com.

Keywords

  • northern lakes
  • seasonality
  • seston
  • winter limnology
  • zooplankton

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