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An ecometric analysis of the fossil mammal record of the Turkana Basin
Vise andre og tillknytning
2016 (engelsk)Inngår i: Philosophical Transactions of the Royal Society of London. Biological Sciences, ISSN 0962-8436, E-ISSN 1471-2970, Vol. 371, artikkel-id 20150232Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Although ecometric methods have been used to analyse fossil mammal faunas and environments of Eurasia and North America, such methods have not yet been applied to the rich fossil mammal record of eastern Africa. Here we report results from analysis of a combined dataset spanning east and west Turkana from Kenya between 7 and 1 million years ago (Ma). We provide temporally and spatially resolved estimates of temperature and precipitation and discuss their relationship to patterns of faunal change, and propose a new hypothesis to explain the lack of a temperature trend. We suggest that the regionally arid Turkana Basin may between 4 and 2 Ma have acted as a ‘species factory’, generating ecological adaptations in advance of the global trend. We show a persistent difference between the eastern and western sides of the Turkana Basin and suggest that the wetlands of the shallow eastern side could have provided additional humidity to the terrestrial ecosystems. Pending further research, a transient episode of faunal change centred at the time of the KBS Member (1.87–1.53 Ma), may be equally plausibly attributed to climate change or to a top-down ecological cascade initiated by the entry of technologically sophisticated humans.

sted, utgiver, år, opplag, sider
2016. Vol. 371, artikkel-id 20150232
Emneord [en]
fossil mammal, palaeoclimate, ecosystem change, human origins, predictive modelling
HSV kategori
Forskningsprogram
Naturmiljö och människan
Identifikatorer
URN: urn:nbn:se:nrm:diva-1773DOI: 10.1098/rstb.2015.0232OAI: oai:DiVA.org:nrm-1773DiVA, id: diva2:936011
Forskningsfinansiär
Swedish Research CouncilTilgjengelig fra: 2016-06-13 Laget: 2016-06-13 Sist oppdatert: 2017-11-28

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