Relationships between population densities and niche-centroid distances in North American birds


. 2020 Mar;23(3):555-564. doi: 10.1111/ele.13453. Epub 2020 Jan 15.

Affiliations

Affiliations

  • 1 Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico.
  • 2 Biodiversity Institute, University of Kansas, Lawrence, KS, 66045, Mexico.
  • 3 Laboratorio de Ecología Geográfica, Unidad de Biología de la Conservación, Parque Científico Tecnológico de Yucatán, Universidad Nacional Autónoma de México. Mérida, 97302, Merida, Mexico.
  • 4 Instituto de Biología, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico.
  • 5 Centro del Cambio Global y la Sustentabilidad, A.C, Villahermosa, Mexico, 86080, Mexico.

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Luis Osorio-Olvera et al. Ecol Lett. 2020 Mar.

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. 2020 Mar;23(3):555-564. doi: 10.1111/ele.13453. Epub 2020 Jan 15.

Affiliations

  • 1 Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico.
  • 2 Biodiversity Institute, University of Kansas, Lawrence, KS, 66045, Mexico.
  • 3 Laboratorio de Ecología Geográfica, Unidad de Biología de la Conservación, Parque Científico Tecnológico de Yucatán, Universidad Nacional Autónoma de México. Mérida, 97302, Merida, Mexico.
  • 4 Instituto de Biología, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico.
  • 5 Centro del Cambio Global y la Sustentabilidad, A.C, Villahermosa, Mexico, 86080, Mexico.

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Abstract

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.

Keywords: Abundance; ecological niche centroid; estimation; geographic distribution.

© 2020 John Wiley & Sons Ltd/CNRS.

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