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Oecologia

, Volume 60, Issue 1, pp 71–75 | Cite as

Coherence and horizontal movements of pathces of Holopedium gibberum (Cladocera)

  • Alan J. Tessier
Original Papers

Abstract

The horizontal spatial dynamics of Holopedium gibberum in a small lake was followed during two summers. H. gibberum individuals aggregated into a single patch measured in tens of meters. Patch movement was extensive throughout the limnetic region, bore no apparent relationship to wind action, and patch structure remained cohesive regardless of weather conditions. Grazing activity by H. gibberum within the patch was intensive, reducing phytoplankton density to half that outside the patch.

Keywords

Phytoplankton Coherence Weather Condition Horizontal Movement Small Lake 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1983

Authors and Affiliations

  • Alan J. Tessier
    • 1
  1. 1.Division of Environmental SciencesThe Academy of Natural Sciences of PhiladelphiaPhiladelphiaUSA

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