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dc.contributor.authorSerrano, Francisco Jose
dc.contributor.authorChiappe, Luis Maria
dc.contributor.authorPalmqvist, Paul
dc.contributor.authorFigueirido, Borja
dc.contributor.authorLong, John A
dc.contributor.authorSanz, Jose Luis
dc.date.accessioned2018-11-28T23:25:20Z
dc.date.available2018-11-28T23:25:20Z
dc.date.issued2018-10-02
dc.identifier.citationSerrano, F. J., Chiappe, L. M., Palmqvist, P., Figueirido, B., Long, J. A. and Sanz, J. L., (2018). The effect of long-term atmospheric changes on the macroevolution of birds. Gondwana Research, 65, 86–96.en_US
dc.identifier.issn1878-0571
dc.identifier.urihttp://hdl.handle.net/2328/38616
dc.description© 2018 Elsevier Ltd. This manuscript version is made available under the CC-BY-NC-ND 4.0 license: http://creativecommons.org/licenses/by-nc-nd/4.0/ which permits use, distribution and reproduction in any medium, provided the original work is properly cited. This author accepted manuscript is made available following 24 month embargo from date of publication (October 2018) in accordance with the publisher’s archiving policyen_US
dc.description.abstractAtmospheric conditions are critical for a range of biological functions—locomotion among others—and long-term changes in these conditions have been identified as causal for different macroevolutionary patterns. Here we examine the influence of variations in atmospheric O2 concentration (AOC), temperature (Tair), and air density (ρair) on the power efficiency, as it relates to locomotion, during the evolutionary history of birds. Specifically, our study centers on four key evolutionary events: (1) the body mass reduction of non-avian theropods prior to the rise of birds; (2) the emergence of flapping flight in the earliest birds; (3) the divergence of basal pygostylians; and (4) the diversification of modern birds. Our results suggest that a marked increase in AOC and ρair during the Middle Jurassic—coeval with a trend in miniaturization—improved the power efficiency of the dinosaurian predecessors of birds. Likewise, an increase in these conditions is hypothesized as having played a major role in the diversification of early pygostylians during the Early Cretaceous. However, our analyses do not identify any significant paleoatmospheric effects on either the emergence of flapping flight or the early cladogenesis of modern birds. Extinct birds flew within the range of atmospheric conditions in which modern birds fly but varying past conditions influenced their flight performance. Our study thus highlights the importance of considering paleoatmospheric conditions when reconstructing the flight efficiency of the forerunners of modern birds.en_US
dc.description.sponsorshipFunding was provided by the Spanish Ministry of Economy and Competitiveness (Research Project CGL2015-68300-P and CGL2016-78577-P). F.J. Serrano was supported by a Postdoctoral Fellowship Agreement between the Natural History Museum of Los Angeles County (California, USA) and the Sierra Elvira Foundation (Granada, Spain). Mrs. Gretchen Augustyn and family provided support to the Dinosaur Institute (NHM).en_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.rights© 2018 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license: http://creativecommons.org/licenses/by-nc-nd/4.0/en_US
dc.subjectMacroevolutionen_US
dc.subjectBirdsen_US
dc.subjectTheropodsen_US
dc.subjectClimate changeen_US
dc.subjectLocomotion efficiencyen_US
dc.titleThe effect of long-term atmospheric changes on the macroevolution of birdsen_US
dc.typeArticleen_US
dc.identifier.doihttps://doi.org/10.1016/j.gr.2018.09.002en_US
dc.rights.holder© 2018 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.en_US
dc.rights.licenseCC-BY-NC-ND
local.contributor.authorOrcidLookupLong, John A: https://orcid.org/0000-0001-8012-0114en_US


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