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  Isotopic variation complicates analysis of trophic relations within the fish community of Plußsee: a small, deep, stratifying lake

Harrod, C., & Grey, J. (2006). Isotopic variation complicates analysis of trophic relations within the fish community of Plußsee: a small, deep, stratifying lake. "Natural selection is ecology in action". Dedicated to Professor Dr. Winfried Lampert on the occasion of his 65th birthday, 281-299. doi:10.1127/0003-9136/2006/0167-0281.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-D86C-0 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-D86D-E
Genre: Journal Article

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harrod_2006.pdf (Publisher version), 322KB
 
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 Creators:
Harrod, Chris1, Author              
Grey, Jonathan1, 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: δ¹³C; δ¹⁵N; stable isotope analysis; food web; lake size; pelagic; benthic-littoral
 Abstract: Analysis of carbon and nitrogen stable isotopes has allowed freshwater ecologists to examine lake food webs in increasing detail. Many such studies have highlighted the existence of separate within-lake pelagic and benthic-littoral food webs but are typically conducted on large (> 10km²) lakes, whereas the majority of lakes are actually relatively small. We used stable isotope analysis (δ¹³C & δ¹⁵N) to examine trophic interactions between fish and their prey in Plußsee, as an example of a small, stratifying lake, and to determine whether separate pelagic/benthic-littoral food webs could be distinguished in such systems. Our results indicate that the Plußsee food web was complicated, and due to extensive intra-annual isotopic variation in zooplankton (e. g. cladoceran δ¹³C annual range = 25.6%), it may be impossible to definitively assign consumers from small, eutrophic stratified lakes to pelagic or benthic-littoral food webs. We present evidence that some components of the Plußsee food web (large bream) may be subsidised by carbon of methanogenic origin.

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Language(s): eng - English
 Dates: 2006-09
 Publication Status: Published in print
 Pages: -
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 Rev. Method: -
 Identifiers: eDoc: 291438
DOI: 10.1127/0003-9136/2006/0167-0281
Other: 2500/S 38577
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Title: "Natural selection is ecology in action". Dedicated to Professor Dr. Winfried Lampert on the occasion of his 65th birthday
Source Genre: Issue
 Creator(s):
Boersma, Maarten1, Editor            
Santer, Barbara1, 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: 281 - 299 Identifier: -

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Title: Archiv für Hydrobiologie
  Alternative Title : Arch. Hydrobiol.
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 167 (1-4) Sequence Number: - Start / End Page: - Identifier: ISSN: 0003-9136