Nom du corpus

Corpus Systématique Animale

Titre du document

Testing for non-randomness in sizes and habitats of West Indian lizards: choice of species pool affects conclusions from null models

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Mots-clés d'auteur
  • Lizards
  • structural habitats
  • null models
  • sizes
  • competition
  • West Indies
Nom du fichier dans la ressource
Reptiles_v2b_00383
Auteur(s)
  • Thomas W. Schoener
Affiliation(s)
  • Department of Zoology, University of California, 95616, Davis, CA, USA
Résumé

Several null models are proposed for testing whether size or habitat differences in West IndianAnolis lizards are greater than expected ‘by chance’. The models differ primarily in choice of the pool from which species are sampled to form random communities. Regardless of choice of pool, size differences in the Lesser Antilles are greater than null models predict; the pool using species on the known source (Puerto Rico) gives a greater variance in ratios but about the same mean ratio (for males), or a greater mean ratio (for females), compared with the pool composed of species on the islands being tested (the Stronget al., 1979, Galápagos procedure). On satellite islands of the Greater Antilles, sizes do not differ more than expected from null models. Pools composed of mainland-source species give null communities with more small or more large ratios than those composed of island species, depending upon whether four-species islands are included or excluded, respectively. Colwell and Winkler's unmodified ‘Narcissus’ hypothesis is contradicted by these results in procedures where species not likely to be able to occur on small islands are included in the species pool. Using the most biologically reasonable, but not other, choices of source pool, species on satellite islands of the Greater Antilles differ more in structural habitat then expected ‘by chance’. In contrast to some of the results on size, here mainland-source pools are more likely to produce a statistically significant difference between real and random communities, as predicted by the ‘Narcissus’ hypothesis. However, exclusion of structural habitat categories not found on satellite islands is necessary to achieve this significance.

Catégories Science-Metrix
  • 1 - natural sciences
  • 2 - biology
  • 3 - evolutionary biology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
Catégories Scopus
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Ecology, Evolution, Behavior and Systematics
Catégories WoS
  • 1 - science ; 2 - genetics & heredity
  • 1 - science ; 2 - evolutionary biology
  • 1 - science ; 2 - ecology
Identifiant ISTEX
F69FB95831E8614054D6B020E025B3D0ECF2457A
Revue

Evolutionary Ecology

Année de publication
1988
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
10
Sous-corpus
  • Reptiles
Type de publication
Journal
ark:/67375/1BB-9SS3LT3V-G
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