Show simple item record Brombacher, Anieke Wilson, Paul A. Bailey, Ian Ezard, Thomas H. G.
dc.coverage.spatial Mid-latitude North Atlantic Ocean
dc.coverage.temporal 2.4 - 2.9 Myr 2017-03-17T14:30:03Z 2017-03-17T14:30:03Z 2017-06-09
dc.identifier doi:10.5061/dryad.8jf2k
dc.identifier.citation Brombacher A, Wilson PA, Bailey I, Ezard THG (2017) The breakdown of static and evolutionary allometries during climatic upheaval. The American Naturalist 190(3): 350-362.
dc.identifier.issn 0003-0147
dc.description The influence of within-species variation and covariation on evolutionary patterns is well established for generational and macroevolutionary processes, most prominently through genetic lines of least resistance. However, it is not known whether intraspecific phenotypic variation also directs microevolutionary trajectories into the long term when a species is subject to varying environmental conditions. Here we present a continuous, high-resolution bivariate record of size and shape changes among 12,633 individual planktonic foraminifera of a surviving and an extinct-going species over 500 thousand years. This time interval spans the late Pliocene to earliest Pleistocene intensification of Northern Hemisphere glaciation, an interval of profound climate upheaval that can be divided into three phases of increasing glacial intensity. We found that within each of these three Plio-Pleistocene climate phases the within-population allometries predict evolutionary change from one time-step to the next, and that the within-phase among-population (i.e. evolutionary) allometries match their corresponding static (within-population) allometries. However, the evolutionary allometry across the three climate phases deviates significantly from the static and phase-specific evolutionary allometries in the extinct-going species. Although intraspecific variation leaves a clear signature on mean evolutionary change from one time-step to the next, our study suggests that the link between intraspecific variation and longer-term micro- and macroevolutionary phenomena is prone to environmental perturbation that can overcome constraints induced by within-species trait covariation.
dc.relation.haspart doi:10.5061/dryad.8jf2k/1
dc.relation.isreferencedby doi:10.1086/692570
dc.subject Allometry
dc.subject Climate change
dc.subject Extinction
dc.subject Morphology
dc.subject Ocean
dc.subject Paleontology
dc.title Data from: The breakdown of static and evolutionary allometries during climatic upheaval
dc.type Article
dwc.ScientificName Globoconella puncticulata
dwc.ScientificName Truncorotalia crassaformis
dc.contributor.correspondingAuthor Brombacher, Anieke
prism.publicationName The American Naturalist

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Title Shall area and aspect ratio of G. puncticulata and T. crassaformis
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Description Shell size and shape of the planktonic foraminifera species Globoconella puncticulata and Truncorotalia crassaformis are presented, with sample ID. Sample age as determined by the age model by Bolton et al., 2010 (Paleoceanography).
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