Ecological constraints coupled with deep-time habitat dynamics predict the latitudinal diversity gradient in reef fishes

Gaboriau, Theo, Albouy, Camille, Descombes, Patrice, Mouillot, David, Pellissier, Loic, and Leprieur, Fabien (2019) Ecological constraints coupled with deep-time habitat dynamics predict the latitudinal diversity gradient in reef fishes. Proceedings of the Royal Society of London Series B, Biological Sciences, 286 (1911).

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Abstract

We develop a spatially explicit model of diversification based on palaeohabitat to explore the predictions of four major hypotheses potentially explaining the latitudinal diversity gradient (LDG), namely, the 'time-area', 'tropical niche conservatism', 'ecological limits' and 'evolutionary speed' livpotheses. We compare simulation outputs to observed diversity gradients in the global reef fish fauna. Our simulations show that these hypotheses are nonmutually exclusive and that their relative influence depends on the time scale considered. Simulations suggest that reef habitat dynamics produced the LDG during deep geological time, while ecological constraints shaped the modern LDG, with a strong influence of the reduction in the latitudinal extent of tropical reefs during the Neogene. Overall, this study illustrates how mechanistic models in ecology and evolution can provide a temporal and spatial understanding of the role of speciation, extinction and dispersal in generating biodiversity patterns.

Item ID: 60561
Item Type: Article (Research - C1)
ISSN: 1471-2954
Keywords: diversification, latitudinal diversity gradient, mechanistic model, palaeohabitat, reef fish
Copyright Information: © 2019 The Author(s) Published by the Royal Society. All rights reserved.
Funders: Agence Nationale pour la Recherche (ANR), Fonds National Suisse (FNS)
Projects and Grants: ANR-FNS REEFISH no. 310030E-164294
Date Deposited: 09 Oct 2019 07:39
FoR Codes: 31 BIOLOGICAL SCIENCES > 3103 Ecology > 310305 Marine and estuarine ecology (incl. marine ichthyology) @ 100%
SEO Codes: 96 ENVIRONMENT > 9605 Ecosystem Assessment and Management > 960507 Ecosystem Assessment and Management of Marine Environments @ 100%
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