Narrow thermal tolerance and low dispersal drive higher speciation in tropical mountains.
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ABSTRACT:
SUBMITTER: Polato NR
PROVIDER: S-EPMC6298121 | biostudies-literature | 2018 Dec
REPOSITORIES: biostudies-literature
Publications
Narrow thermal tolerance and low dispersal drive higher speciation in tropical mountains.
Polato Nicholas R NR Gill Brian A BA Shah Alisha A AA Gray Miranda M MM Casner Kayce L KL Barthelet Antoine A Messer Philipp W PW Simmons Mark P MP Guayasamin Juan M JM Encalada Andrea C AC Kondratieff Boris C BC Flecker Alexander S AS Thomas Steven A SA Ghalambor Cameron K CK Poff N LeRoy NL Funk W Chris WC Zamudio Kelly R KR
Proceedings of the National Academy of Sciences of the United States of America 20181105 49
Species richness is greatest in the tropics, and much of this diversity is concentrated in mountains. Janzen proposed that reduced seasonal temperature variation selects for narrower thermal tolerances and limited dispersal along tropical elevation gradients [Janzen DH (1967) <i>Am Nat</i> 101:233-249]. These locally adapted traits should, in turn, promote reproductive isolation and higher speciation rates in tropical mountains compared with temperate ones. Here, we show that tropical and temper ...[more]
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