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Data from: Species richness change across spatial scales

Data from: Species richness change across spatial scales
Data from: Species richness change across spatial scales
Humans have elevated global extinction rates and thus lowered global-scale species richness. However, there is no a priori reason to expect that losses of global species richness should always, or even often, trickle down to losses of species richness at regional and local scales, even though this relationship is often assumed. Here, we show that scale can modulate our estimates of species richness change through time in the face of anthropogenic pressures, but not in a unidirectional way. Instead, the magnitude of species richness change through time can increase, decrease, reverse, or be unimodal across spatial scales. Using several case studies, we show different forms of scale-dependent richness change through time in the face of anthropogenic pressures. For example, Central American corals show a homogenization pattern, where small scale richness is largely unchanged through time, while larger scale richness change is highly negative. Alternatively, birds in North America showed a differentiation effect, where species richness was again largely unchanged through time at small scales, but was more positive at larger scales. Finally, we collated data from a heterogeneous set of studies of different taxa measured through time from sites ranging from small plots to entire continents, and found highly variable patterns that nevertheless imply complex scale-dependence in several taxa. In summary, understanding how biodiversity is changing in the Anthropocene requires an explicit recognition of the influence of spatial scale, and we conclude with some recommendations for how to better incorporate scale into our estimates of change.
DRYAD
Chase, Jonathan M.
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McGill, Brian J.
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Thompson, Patrick L.
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Antão, Laura H.
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Bates, Amanda E.
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Blowes, Shane A.
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Dornelas, Maria
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Gonzalez, Andrew
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Magurran, Anne E.
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Supp, Sarah R.
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Winter, Marten
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Bjorkmann, Anne D.
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Bruelheide, Helge
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Byrnes, Jarrett E.K.
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Cabral, Juliano Sarmento
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Ehali, Robin
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Gomez, Catalina
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Guzman, Hector M.
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Isbell, Forest
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Myers-Smith, Isla H.
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Jones, Holly P.
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Hines, Jessica
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Vellend, Mark
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Waldock, Conor
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O'Connor, Mary
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Chase, Jonathan M.
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McGill, Brian J.
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Thompson, Patrick L.
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Antão, Laura H.
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Bates, Amanda E.
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Blowes, Shane A.
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Dornelas, Maria
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Gonzalez, Andrew
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Magurran, Anne E.
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Supp, Sarah R.
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Winter, Marten
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Bjorkmann, Anne D.
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Bruelheide, Helge
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Byrnes, Jarrett E.K.
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Cabral, Juliano Sarmento
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Ehali, Robin
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Gomez, Catalina
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Guzman, Hector M.
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Isbell, Forest
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Myers-Smith, Isla H.
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Jones, Holly P.
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Hines, Jessica
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Vellend, Mark
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Waldock, Conor
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O'Connor, Mary
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(2019) Data from: Species richness change across spatial scales. DRYAD doi:10.5061/dryad.2jk717g [Dataset]

Record type: Dataset

Abstract

Humans have elevated global extinction rates and thus lowered global-scale species richness. However, there is no a priori reason to expect that losses of global species richness should always, or even often, trickle down to losses of species richness at regional and local scales, even though this relationship is often assumed. Here, we show that scale can modulate our estimates of species richness change through time in the face of anthropogenic pressures, but not in a unidirectional way. Instead, the magnitude of species richness change through time can increase, decrease, reverse, or be unimodal across spatial scales. Using several case studies, we show different forms of scale-dependent richness change through time in the face of anthropogenic pressures. For example, Central American corals show a homogenization pattern, where small scale richness is largely unchanged through time, while larger scale richness change is highly negative. Alternatively, birds in North America showed a differentiation effect, where species richness was again largely unchanged through time at small scales, but was more positive at larger scales. Finally, we collated data from a heterogeneous set of studies of different taxa measured through time from sites ranging from small plots to entire continents, and found highly variable patterns that nevertheless imply complex scale-dependence in several taxa. In summary, understanding how biodiversity is changing in the Anthropocene requires an explicit recognition of the influence of spatial scale, and we conclude with some recommendations for how to better incorporate scale into our estimates of change.

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More information

Published date: 2019

Identifiers

Local EPrints ID: 449438
URI: http://eprints.soton.ac.uk/id/eprint/449438
PURE UUID: 486df3bd-d324-4ed5-9424-46f8f71ee8ac

Catalogue record

Date deposited: 28 May 2021 16:32
Last modified: 05 May 2023 18:14

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Contributors

Contributor: Jonathan M. Chase
Contributor: Brian J. McGill
Contributor: Patrick L. Thompson
Contributor: Laura H. Antão
Contributor: Amanda E. Bates
Contributor: Shane A. Blowes
Contributor: Maria Dornelas
Contributor: Andrew Gonzalez
Contributor: Anne E. Magurran
Contributor: Sarah R. Supp
Contributor: Marten Winter
Contributor: Anne D. Bjorkmann
Contributor: Helge Bruelheide
Contributor: Jarrett E.K. Byrnes
Contributor: Juliano Sarmento Cabral
Contributor: Robin Ehali
Contributor: Catalina Gomez
Contributor: Hector M. Guzman
Contributor: Forest Isbell
Contributor: Isla H. Myers-Smith
Contributor: Holly P. Jones
Contributor: Jessica Hines
Contributor: Mark Vellend
Contributor: Conor Waldock
Contributor: Mary O'Connor

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