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dc.contributor.authorCOOPER, NATALIE
dc.contributor.authorPURVIS, ANDY
dc.date.accessioned2012-09-10T11:08:32Z
dc.date.available2012-09-10T11:08:32Z
dc.date.issued2010
dc.date.submitted2010en
dc.identifier.citationCooper, N, Purvis, A, Body Size Evolution in Mammals: Complexity in Tempo and Mode, American Naturalist, 175, 2010en
dc.identifier.otherY
dc.identifier.urihttp://hdl.handle.net/2262/64934
dc.descriptionPUBLISHEDen
dc.description.abstractBody size correlates with virtually every aspect of species? biology, so understanding the tempo and mode of its evolution is of key importance in macroecology and macroevolution. Here we use body-mass data from 3473 of 4510 extant mammalian species and an almost complete species-level phylogeny to determine the best model of log(body-mass) evolution across all mammals, split taxonomically and spatially. An early-burst model fits better across all mammals than models based on either Brownian motion or an Ornstein-Uhlenbeck process, suggesting that mammals experienced a burst of morphological evolution relatively early in their history followed by slower change subsequently. We also use spatial models to investigate rates of body-mass evolution within ecoregions. These models show that around 50% of the variation in rate can be explained by just a few predictors. High estimated rates are associated with cold, low lying, species-poor, high energy, mainland ecoregions. We conclude that the evolution of mammalian body size has been influenced by a complex interplay among geography, climate and history.en
dc.language.isoenen
dc.publisherUniversity of Chicago Pressen
dc.relation.ispartofseriesAmerican Naturalist;175
dc.rightsYen
dc.subjectbody-massen
dc.subjectBrownianen
dc.subjectearly bursten
dc.subjectmammalsen
dc.subjectOUen
dc.subjectrates of evolutionen
dc.titleBody size evolution in mammals: complexity in tempo and modeen
dc.typeJournal Articleen
dc.contributor.sponsorNatural Environment Research Councilen
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/ncooper
dc.identifier.rssinternalid80438
dc.contributor.sponsorGrantNumberNER/S/A/2005/13527en
dc.identifier.rssurihttp://www.jstor.org/stable/10.1086/652466


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