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  Effects of competitors and Chaoborus predation on the cladocerans of an eutrophic lake: an enclosure study

Mumm, H. (1997). Effects of competitors and Chaoborus predation on the cladocerans of an eutrophic lake: an enclosure study. Cladocera: The Biology of Model Organisms, 253-264.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-E1EE-0 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-E1EF-E
Genre: Journal Article

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Mumm, H., 1997, S- 37397.pdf (Publisher version), 152KB
 
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Mumm, H., 1997, S- 37397.pdf
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 Creators:
Mumm, Heike1, Author              
Affiliations:
1Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_976547              

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Free keywords: cladocera; Daphnia; Chaoborus; size-selective predation; competition; birth rate; death rate
 Abstract: The role of large laboratory grown food competitors of the genus Daphnia as well as the predation impact of Chaoborus on the cladoceran community of an eutrophic lake was assessed in five in situ enclosure experiments. The hypothesis tested was that the outcome of competition and gape-limited predation on cladocerans is size dependent. According to the generally accepted assumptions on competition and invertebrate predation, large-bodied cladoceran taxa were expected to be less affected by competing congeners and by Chaoborus than were small-bodied taxa. Effects of the predator upon an assemblage of differently sized cladoceran taxa were much more pronounced than effects of competition. There was a tendency of predation and competition impact to decrease with cladoceran size, but predation pressure was also low for some small cladocerans and high for some large cladocerans. The general trends were further obscured by factors not or indirectly linked to body size.

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Language(s): eng - English
 Dates: 1997-12-24
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: -
 Identifiers: eDoc: 119890
Other: 1753/S 37397
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Source 1

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Title: Cladocera: The Biology of Model Organisms
Source Genre: Issue
 Creator(s):
Brancelj, A., Editor
De Meester, L.1, Editor            
Spaak, P.1, Editor            
Affiliations:
1 Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_976547            
Publ. Info: -
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 253 - 264 Identifier: -

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Title: Hydrobiologia
Source Genre: Journal
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Pages: - Volume / Issue: 360 Sequence Number: - Start / End Page: - Identifier: ISSN: 0018-8158