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Weak support for the abundant niche-centre hypothesis in North American birds

Dallas, T.; Pironon, S.; Santini, L.

2020-02-28 ecology
10.1101/2020.02.27.968586 bioRxiv
Show abstract

Species abundance is expected to decrease from the centre towards the edge of their ecological niches (abundant niche-centre hypothesis). Recently, Osorio-Olvera et al. (2020) reported strong support for the abundant niche-centre relationship in North American birds. We demonstrate here that methodological decisions strongly affected perceived support. Avoiding these issues casts doubt on conclusions by Osorio-Olvera et al. and the putative support for the abundant nichecentre hypothesis in North American birds.

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