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Ecology, 86(5), 2005, pp. 13011311 2005 by the Ecological Society of America
 

Summary: 1301
Ecology, 86(5), 2005, pp. 1301­1311
2005 by the Ecological Society of America
QUANTITATIVE PATTERNS IN THE STRUCTURE OF MODEL AND
EMPIRICAL FOOD WEBS
D. B. STOUFFER,1,3
J. CAMACHO,1,2
R. GUIMERA` ,1
C. A. NG,1
AND L. A. NUNES AMARAL1
1
Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208 USA
2Departament de Fi´sica (Fi´sica Estadi´stica), Universitat Auto`noma de Barcelona, E-08193 Bellaterra, Catalonia, Spain
Abstract. Understanding the structure of food webs, and the mechanisms that give rise
to this structure, is one of the most challenging problems in ecology. We analyze from a
statistical physics perspective the network structure of model food webs and of 15 com-
munity food webs from a variety of environments, including freshwater, marine, estuarine,
and terrestrial environments. We perform a theoretical analysis of two recently proposed
models for food webs, the niche model of R. J. Williams and N. D. Martinez and the nested-
hierarchy model of M.-F. Cattin et al. We find that the two models generate distributions

  

Source: Amaral, Luis A.N. - Department of Chemical and Biological Engineering, Northwestern University
Stouffer, Daniel B. - Estación Biológica de Doñana

 

Collections: Biology and Medicine; Environmental Sciences and Ecology; Physics