Relationships between population densities and niche-centroid distances in North American birds.
Ecol Lett
; 23(3): 555-564, 2020 Mar.
Article
em En
| MEDLINE
| ID: mdl-31944513
Correlational ecological niche models have seen intensive use and exploration as a means of estimating the limits of actual and potential geographic distributions of species, yet their application to explaining geographic abundance patterns has been debated. We developed a detailed test of this latter possibility based on the North American Breeding Bird Survey. Correlations between abundances and niche-centroid distances were mostly negative, as per expectations of niche theory and the abundant niche-centre relationship. The negative relationships were not distributed randomly among species: terrestrial, non-migratory, small-bodied, small-niche-breadth and restricted-range species had the strongest negative associations. Distances to niche centroids as estimated from correlational analyses of presence-only data thus offer a unique means by which to infer geographic abundance patterns, which otherwise are enormously difficult to characterise.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Aves
/
Ecossistema
Limite:
Animals
Idioma:
En
Revista:
Ecol Lett
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
México
País de publicação:
Reino Unido