Nom du corpus

Corpus Systématique Animale

Titre du document

Examination of the “null” model of connor and simberloff for species co-occurrences on Islands

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Nom du fichier dans la ressource
Oiseaux_v2b_02655
Auteur(s)
  • Jared M. Diamond 1
  • Michael E. Gilpin 2
Affiliation(s)
  • 1) Physiology Department, University of California Medical School, 90024, Los Angeles, California, USA
  • 2) Biology Department, University of California at San Diego, 92093, La Jolla, California, USA
Résumé

Among birds of the Bismarck Archipelago, only certain combinations of the species in a guild coexist on islands, and some species that are very similar ecologically have mutually exclusive distributions. Diamond (1975) interpreted these patterns as biologically significant, involving effects such as competition. Connor and Simberloff (1979) claimed such patterns to be not recognizably different from random, because they were scarcely distinguishable from those generated by a “null” distribution supposedly not incorporating competition. On examining the analysis by Connor and Simberloff, we find that it actually yields the opposite conclusion: three faunas tested have grossly non-random structures, while their test is unworkable for the fourth fauna. The method of Connor and Simberloff for generating a null distribution has many fatal weaknesses: dilution of relevant data from guilds with irrelevant data from the whole species pool; hidden incorporation of effects of competition into the constraints; inability to recognize a checkerboard, the extreme example of a distribution produced by competition; reliance on inefficient Monte Carlo simulations; severe constraints that sometimes make generation of a null distribution impossible; failure to weight species combinations; and failure to identify the direction of non-randomness or the species combinations most responsible. Finally, we use other recent studies by Simberloff and coleagues to examine the value of constructing null hypotheses in community ecology.

Catégories Science-Metrix
  • 1 - natural sciences
  • 2 - biology
  • 3 - ecology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - ecologie animale, vegetale et microbienne
Catégories Scopus
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Ecology, Evolution, Behavior and Systematics
Catégories WoS
  • 1 - science ; 2 - ecology
Identifiant ISTEX
37370F439C3CCEFEA385644761FF1622445EF6DB
Revue

Oecologia

Année de publication
1982
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
9.592
Sous-corpus
  • Oiseaux
Type de publication
Journal
ark:/67375/1BB-8FGVCKZ1-X
Powered by Lodex 9.3.8