| Role of food partitioning in structuring the zooplankton community in mountain lakes. | |
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MedLine Citation:
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PMID: 12827488 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Trophic-niche differentiation is often cited as a main factor in structuring zooplankton assemblages, although field evidence for this is rarely presented. The study was based on a survey of 29 Pyrenean lakes with altitudes ranging between 1,875 and 2,990 m carried out during July and August 2000. Because of the oligotrophic nature of these lakes, we aimed to confirm that food partitioning is a major factor in shaping zooplankton assemblages. We analysed the amino acid composition of six cladocera and seven copepod species. A discriminant analysis showed that each species could be distinguished according to its amino acid composition. A negative relationship between amino acid differentiation and co-occurrence among the cladocera and cyclopoid copepod was observed. In contrast, calanoids did not show any relationship and were characterised by a high amino acid differentiation between species. As the differences in the amino acid composition among zooplankton species indicate distinct food sources, the relationship found indicates that trophic-niche differentiation plays a key role in determining the assemblage of these zooplankton communities. Therefore exploitative competition, either at present or in the past by driving co-evolutionary histories, has been a significant factor in structuring the cladocera and cyclopoid communities in these oligotrophic lakes. |
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Authors:
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C Guisande; F Bartumeus; M Ventura; J Catalan |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2003-06-25 |
Journal Detail:
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Title: Oecologia Volume: 136 ISSN: 0029-8549 ISO Abbreviation: Oecologia Publication Date: 2003 Aug |
Date Detail:
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Created Date: 2003-08-18 Completed Date: 2004-01-06 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0150372 Medline TA: Oecologia Country: Germany |
Other Details:
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Languages: eng Pagination: 627-34 Citation Subset: IM |
Affiliation:
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Facultad de Ciencias, Universidad de Vigo, Lagoas-Marcosende, 36200 Vigo, Spain. castor@uvigo.es |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Altitude Amino Acids / analysis* Animals Cladocera / chemistry* Copepoda / chemistry* Evolution Food Chain Population Dynamics Water Supply* Zooplankton* |
| Chemical | |
Reg. No./Substance:
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0/Amino Acids |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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