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An ecometric analys...
An ecometric analysis of the fossil mammal record of the Turkana Basin
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Fortelius, Mikael (author)
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Žliobaitė, Indre (author)
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Kaya, Ferhat (author)
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Bibi, Faysal (author)
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Bobe, René (author)
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Leakey, Louise (author)
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Leakey, Meave (author)
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Patterson, David (author)
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Rannikko, Janina (author)
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- Werdelin, Lars (author)
- Naturhistoriska riksmuseet,Enheten för paleobiologi
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(creator_code:org_t)
- 2016-07-05
- 2016
- English.
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In: Philosophical Transactions of the Royal Society of London. Biological Sciences. - : The Royal Society. - 0962-8436 .- 1471-2970. ; 371
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Abstract
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- 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.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Annan geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Other Earth and Related Environmental Sciences (hsv//eng)
Keyword
- fossil mammal
- palaeoclimate
- ecosystem change
- human origins
- predictive modelling
- Naturmiljö och människan
- Man and the environment
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Fortelius, Mikae ...
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Žliobaitė, Indre
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Kaya, Ferhat
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Bibi, Faysal
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Bobe, René
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Leakey, Louise
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show more...
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Leakey, Meave
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Patterson, David
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Rannikko, Janina
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Werdelin, Lars
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Other Earth and ...
- Articles in the publication
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Philosophical Tr ...
- By the university
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Swedish Museum of Natural History