Document Detail

A robust measure of food web intervality.
MedLine Citation:
PMID:  17146055     Owner:  NLM     Status:  MEDLINE    
Intervality of a food web is related to the number of trophic dimensions characterizing the niches in a community. We introduce here a mathematically robust measure for food web intervality. It has previously been noted that empirical food webs are not strictly interval; however, upon comparison to suitable null hypotheses, we conclude that empirical food webs actually do exhibit a strong bias toward contiguity of prey, that is, toward intervality. Further, our results strongly suggest that empirically observed species and their diets can be mapped onto a single dimension. This finding validates a critical assumption in the recently proposed static niche model and provides guidance for ongoing efforts to develop dynamic models of ecosystems.
Daniel B Stouffer; Juan Camacho; Luís A Nunes Amaral
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2006-12-04
Journal Detail:
Title:  Proceedings of the National Academy of Sciences of the United States of America     Volume:  103     ISSN:  0027-8424     ISO Abbreviation:  Proc. Natl. Acad. Sci. U.S.A.     Publication Date:  2006 Dec 
Date Detail:
Created Date:  2006-12-13     Completed Date:  2007-01-22     Revised Date:  2013-06-06    
Medline Journal Info:
Nlm Unique ID:  7505876     Medline TA:  Proc Natl Acad Sci U S A     Country:  United States    
Other Details:
Languages:  eng     Pagination:  19015-20     Citation Subset:  IM    
Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL 60208, USA.
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MeSH Terms
Computer Simulation
Empirical Research
Food Chain*
Models, Biological
Grant Support
K25 GM069546-04/GM/NIGMS NIH HHS

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