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Lake thermal structure influences macroinvertebrate predation on
 

Summary: Lake thermal structure influences
macroinvertebrate predation on
crustacean zooplankton
SHANNON A. MACPHEE1,2*, SHELLEY E. ARNOTT1 AND WENDEL (BILL) KELLER2
1
DEPARTMENT OF BIOLOGY, QUEEN'S UNIVERSITY, KINGSTON, ONTARIO, CANADA AND
2
COOPERATIVE FRESHWATER ECOLOGY UNIT, BIOLOGY DEPARTMENT,
LAURENTIAN UNIVERSITY, SUDBURY, ONTARIO, CANADA
*CORRESPONDING AUTHOR: smacphee@laurentian.ca
Received November 25, 2010; accepted in principle April 21, 2011; accepted for publication April 28, 2011
Corresponding editor: Roger Harris
Changes in lake thermal structure, which are predicted with future climate
warming, may alter predator­prey interactions if foraging rates or the spatial
overlap of predators and prey depend on thermal conditions. Small Boreal Shield
lakes are particularly responsive to weather-induced changes in thermal structure.
They are often fishless, with macroinvertebrate predators regulating crustacean
zooplankton communities. We performed a mesocosm experiment to examine
how thermal structure (stratified and isothermal) influences the predation impact
of surface-orienting Buenoa macrotibialis and vertically migrating Chaoborus punctipennis

  

Source: Arnott, Shelley - Department of Biology, Queen's University (Kingston)

 

Collections: Environmental Sciences and Ecology; Biology and Medicine