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  Different environmental variables predict body and brain size evolution in Homo

Will, M., Krapp, M., Stock, J. T., & Manica, A. (2021). Different environmental variables predict body and brain size evolution in Homo. Nature Communications, 12(1): 4116. doi:10.1038/s41467-021-24290-7.

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(last seen: July 2021)
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 Creators:
Will, Manuel, Author
Krapp, Mario, Author
Stock, Jay T.1, Author              
Manica, Andrea, Author
Affiliations:
1Archaeology, Max Planck Institute for the Science of Human History, Max Planck Society, ou_2074312              

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Free keywords: Biological anthropology, Evolutionary ecology, Palaeontology
 Abstract: Increasing body and brain size constitutes a key macro-evolutionary pattern in the hominin lineage, yet the mechanisms behind these changes remain debated. Hypothesized drivers include environmental, demographic, social, dietary, and technological factors. Here we test the influence of environmental factors on the evolution of body and brain size in the genus Homo over the last one million years using a large fossil dataset combined with global paleoclimatic reconstructions and formalized hypotheses tested in a quantitative statistical framework. We identify temperature as a major predictor of body size variation within Homo, in accordance with Bergmann’s rule. In contrast, net primary productivity of environments and long-term variability in precipitation correlate with brain size but explain low amounts of the observed variation. These associations are likely due to an indirect environmental influence on cognitive abilities and extinction probabilities. Most environmental factors that we test do not correspond with body and brain size evolution, pointing towards complex scenarios which underlie the evolution of key biological characteristics in later Homo.

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Language(s): eng - English
 Dates: 2021-07-08
 Publication Status: Published online
 Pages: 12
 Publishing info: -
 Table of Contents: Introduction
Results
- Approach of power analysis and linear regressions
- Power analysis of synthetic data
- Analysis of fossil data
Discussion
Methods
- Body and brain size database
- Climate reconstructions
- Synthetic datasets and power analysis
 Rev. Type: Peer
 Identifiers: DOI: 10.1038/s41467-021-24290-7
Other: shh2993
 Degree: -

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Title: Nature Communications
  Abbreviation : Nat. Commun.
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 12 (1) Sequence Number: 4116 Start / End Page: - Identifier: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723