The macroevolutionary dynamics of species coexistence in birds

Title: The macroevolutionary dynamics of species coexistence in birds
Authors: Pigot, A
Jetz, W
Sheard, C
Tobias, JA
Item Type: Journal Article
Abstract: Ecological communities are assembled from the overlapping of species in geographic space, but the mechanisms facilitating or limiting such overlaps are difficult to resolve. Here, we combine phylogenetic, morphological and environmental data to model how multiple processes regulate the origin and maintenance of geographic range overlap across 1,115 pairs of avian sister species globally. We show that coexistence cannot be adequately predicted by either dispersal-assembly (that is, biogeographic) models or niche-assembly models alone. Instead, our results overwhelmingly support an integrated model with different assembly processes dominating at different stages of coexistence. The initial attainment of narrow geographic overlap is dictated by intrinsic dispersal ability and the time available for dispersal, whereas wider coexistence is largely dependent on niche availability, increasing with ecosystem productivity and divergence in niche-related traits, and apparently declining as communities become saturated with species. Furthermore, although coexistence of any individual pair of species is highly stochastic, we find that integrating assembly processes allows broad variation in the incidence and extent of coexistence to be predicted with reasonable accuracy. Our findings demonstrate how phylogenetic data coupled with environmental factors and functional traits can begin to clarify the multi-layered processes shaping the distribution of biodiversity at large spatial scales.
Issue Date: 18-Jun-2018
Date of Acceptance: 9-May-2018
URI: http://hdl.handle.net/10044/1/60225
DOI: https://doi.org/10.1038/s41559-018-0572-9
ISSN: 2397-334X
Publisher: Nature Publishing Group
Start Page: 1112
End Page: 1119
Journal / Book Title: Nature Ecology and Evolution
Volume: 2
Copyright Statement: © 2018 Macmillan Publishers Limited, part of Springer Nature. All rights reserved.
Keywords: Science & Technology
Life Sciences & Biomedicine
Ecology
Evolutionary Biology
Environmental Sciences & Ecology
CHARACTER DISPLACEMENT
SYMPATRIC SPECIATION
COMMUNITY STRUCTURE
SECONDARY SYMPATRY
CONTINENTAL SCALES
GLOBAL DIVERSITY
PASSERINE BIRDS
DISPERSAL
NICHE
NEUTRALITY
Animal Distribution
Animals
Biota
Birds
Ecosystem
Models, Biological
Phylogeny
Population Dynamics
Animals
Birds
Ecosystem
Population Dynamics
Phylogeny
Models, Biological
Biota
Animal Distribution
Publication Status: Published
Online Publication Date: 2018-06-18
Appears in Collections:Faculty of Natural Sciences



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