Substrate selection and seasonal variation in abundance and size composition of isopod Lirceus fontinalis in Ontario streams, Canada

Xiaoxia Zhao; Michael G. Fox; David C. Lasenby; Alexis C. Armit; Dolly N. Kothawala

doi:10.1007/s00343-007-0215-5

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Substrate selection and seasonal variation in abundance and size composition of isopod Lirceus fontinalis in Ontario streams, Canada

Updated：2023-05-16

- Substrate selection and seasonal variation in abundance and size composition of isopod Lirceus fontinalis in Ontario streams, Canada
- Journal of Oceanology and Limnology Vol. 25, Issue 2, Pages: 215-220(2007)
- Affiliations：
  
  1. Watershed Ecosystems Graduate Program Trent University
  2. Environmental & Resource Studies Program and Department of Biology Trent University
  3. Department of Biology Trent University
- Author bio：
- Funds：
- DOI：10.1007/s00343-007-0215-5
  CLC：
- Published：2007
- Accepted：
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Zhao, X., Fox, M.G., Lasenby, D.C. et al. Substrate selection and seasonal variation in abundance and size composition of isopod Lirceus fontinalis in Ontario streams, Canada., Chin. J. Ocean. Limnol. 25, 215–220 (2007). https://doi.org/10.1007/s00343-007-0215-5
DOI：

Zhao, X., Fox, M.G., Lasenby, D.C. et al. Substrate selection and seasonal variation in abundance and size composition of isopod Lirceus fontinalis in Ontario streams, Canada., Chin. J. Ocean. Limnol. 25, 215–220 (2007). https://doi.org/10.1007/s00343-007-0215-5 DOI：

摘要

Abstract

The abundance and size composition of stream isopods Lirceus fontinalis were investigated from April 2001 to August 2002 in 3 streams in southern Ontario

Canada. Effects of current speed was released from the analysis by choosing slow flowing water. The effects of substrate

season and water depth on the abundance

distribution and size composition of the isopods were analyzed. It was found that substrate and season influence isopods the most. The rocky substrate with attached filamentous macro-algae contains an isopod abundance 7.05 times that of bare rock substrate and 14.6 times that of fine-sand and mud substrate. There was a large variation with respect to seasonality in both abundance and size composition of the isopods

with the highest abundance occurring in summer and the lowest in winter and spring; individual isopods also tend to be larger in the winter and spring. In all substrates

shallow areas tend to support higher densities of isopods than deeper areas.

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references

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