Late quaternary biotic homogenization of North American mammalian faunas

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Fraser , D , Villasenor , A , Toth , A B , Balk , M A , Eronen , J T , Barr , W A , Behrensmeyer , A K , Davis , M , Du , A , Faith , J T , Graves , G R , Gotelli , N J , Jukar , A M , Looy , C , McGill , B J , Miller , J H , Pineda-Munoz , S , Potts , R , Shupinski , A B , Soul , L C & Lyons , S K 2022 , ' Late quaternary biotic homogenization of North American mammalian faunas ' , Nature Communications , vol. 13 , 3940 . https://doi.org/10.1038/s41467-022-31595-8

Title: Late quaternary biotic homogenization of North American mammalian faunas
Author: Fraser, Danielle; Villasenor, Amelia; Toth, Aniko B.; Balk, Meghan A.; Eronen, Jussi T.; Barr, W. Andrew; Behrensmeyer, A. K.; Davis, Matt; Du, Andrew; Faith, J. Tyler; Graves, Gary R.; Gotelli, Nicholas J.; Jukar, Advait M.; Looy, Cindy; McGill, Brian J.; Miller, Joshua H.; Pineda-Munoz, Silvia; Potts, Richard; Shupinski, Alex B.; Soul, Laura C.; Lyons, S. Kathleen
Contributor organization: University of Helsinki
Department of Geosciences and Geography
Ecosystems and Environment Research Programme
Helsinki Institute of Sustainability Science (HELSUS)
Past Present Sustainability (PAES)
Date: 2022-07-08
Language: eng
Number of pages: 11
Belongs to series: Nature Communications
ISSN: 2041-1723
DOI: https://doi.org/10.1038/s41467-022-31595-8
URI: http://hdl.handle.net/10138/346684
Abstract: Biotic homogenization-increasing similarity of species composition among ecological communities-has been linked to anthropogenic processes operating over the last century. Fossil evidence, however, suggests that humans have had impacts on ecosystems for millennia. We quantify biotic homogenization of North American mammalian assemblages during the late Pleistocene through Holocene (similar to 30,000 ybp to recent), a timespan encompassing increased evidence of humans on the landscape (similar to 20,000-14,000 ybp). From similar to 10,000 ybp to recent, assemblages became significantly more homogenous (>100% increase in Jaccard similarity), a pattern that cannot be explained by changes in fossil record sampling. Homogenization was most pronounced among mammals larger than 1 kg and occurred in two phases. The first followed the megafaunal extinction at similar to 10,000 ybp. The second, more rapid phase began during human population growth and early agricultural intensification (similar to 2,000-1,000 ybp). We show that North American ecosystems were homogenizing for millennia, extending human impacts back similar to 10,000 years.
Subject: NULL MODEL ANALYSIS
BETA-DIVERSITY
RANGE SHIFTS
ECOLOGICAL CONSEQUENCES
PLANT-COMMUNITIES
SPECIES RICHNESS
BODY-SIZE
CLIMATE
BIODIVERSITY
EXTINCTIONS
1181 Ecology, evolutionary biology
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion


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