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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Preprint version bioRxiv The Preprint Server for Biology, 2020.
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Dallas, T., Pironon, S., & Santini, L. (2020). The Abundant-Centre Is Not All That Abundant: A Comment to Osorio-Olvera et al. 2020. https://doi.org/10.1101/2020.02.27.968586