Document Detail

Food-web structure in low- and high-dimensional trophic niche spaces.
MedLine Citation:
PMID:  20462875     Owner:  NLM     Status:  MEDLINE    
A question central to modelling and, ultimately, managing food webs concerns the dimensionality of trophic niche space, that is, the number of independent traits relevant for determining consumer-resource links. Food-web topologies can often be interpreted by assuming resource traits to be specified by points along a line and each consumer's diet to be given by resources contained in an interval on this line. This phenomenon, called intervality, has been known for 30 years and is widely acknowledged to indicate that trophic niche space is close to one-dimensional. We show that the degrees of intervality observed in nature can be reproduced in arbitrary-dimensional trophic niche spaces, provided that the processes of evolutionary diversification and adaptation are taken into account. Contrary to expectations, intervality is least pronounced at intermediate dimensions and steadily improves towards lower- and higher-dimensional trophic niche spaces.
Axel G Rossberg; Ake Brännström; Ulf Dieckmann
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Publication Detail:
Type:  Journal Article     Date:  2010-05-12
Journal Detail:
Title:  Journal of the Royal Society, Interface / the Royal Society     Volume:  7     ISSN:  1742-5662     ISO Abbreviation:  J R Soc Interface     Publication Date:  2010 Dec 
Date Detail:
Created Date:  2010-10-26     Completed Date:  2011-02-18     Revised Date:  2013-05-29    
Medline Journal Info:
Nlm Unique ID:  101217269     Medline TA:  J R Soc Interface     Country:  England    
Other Details:
Languages:  eng     Pagination:  1735-43     Citation Subset:  IM    
Queen's University Belfast, UK.
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MeSH Terms
Biological Evolution*
Computer Simulation
Food Chain*
Models, Theoretical*

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