Latitudinal gradients in intraspecific ecological diversity

Biology Letters
Márcio S Araújo, Raul Costa-Pereira

Abstract

The increase in the number of species with decreasing latitude is a striking pattern of global biodiversity. An important feature of studies of this pattern up to now has been the focus on species as the fundamental unit of interest, neglecting potential within-species ecological diversity. Here, we took a new perspective on this topic by measuring the degree to which individuals within populations differ in niche attributes across a latitudinal gradient (range: 54.01° S to 69.12° N). We show that 156 populations of 76 species across a wide range of vertebrate and invertebrate animal taxa contain more ecologically diverse assemblages of individuals towards lower latitudes. Our results add a new level of complexity to our understanding of global patterns of biodiversity and suggest the possibility that niche variation is partly responsible for the latitudinal gradients of species diversity.

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Citations

Aug 12, 2014·Molecular Phylogenetics and Evolution·David L SlagerJohn Klicka
Sep 23, 2014·Global Change Biology·Michael KaspariAdam Kay
Aug 10, 2016·Evolution; International Journal of Organic Evolution·Asher D Cutter, Jeremy C Gray
Jun 26, 2018·The Journal of Animal Ecology·Raul Costa-PereiraMárcio S Araújo
Mar 15, 2015·Applied and Environmental Microbiology·Alejandra I HuertaCaitilyn Allen
May 2, 2019·Proceedings. Biological Sciences·Raul Costa-PereiraTravis Ingram
Apr 10, 2019·Proceedings. Biological Sciences·Henrik SjödinPer Lundberg
Sep 9, 2020·The Journal of Animal Ecology·Patricia Kerches-RogeriMarco Aurelio Ribeiro Mello

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