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.
Competing Interest Statement
The authors have declared no competing interest.
Footnotes
Funding: TAD was supported by Louisiana State University.
Respond to reviewer concerns, and clarify some text and analyses.
Copyright
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