Selective constraints on global plankton dispersal
Selective constraints on global plankton dispersal
Marine microbial communities are highly interconnected assemblages of organisms shaped by ecological drift, natural selection, and dispersal. The relative strength of these forces determines how ecosystems respond to environmental gradients, how much diversity is resident in a community or population at any given time, and how populations reorganize and evolve in response to environmental perturbations. In this study, we introduce a globally resolved population–genetic ocean model in order to examine the interplay of dispersal, selection, and adaptive evolution and their effects on community assembly and global biogeography. We find that environmental selection places strong constraints on global dispersal, even in the face of extremely high assumed rates of adaptation. Changing the relative strengths of dispersal, selection, and adaptation has pronounced effects on community assembly in the model and suggests that barriers to dispersal play a key role in the structuring of marine communities, enhancing global biodiversity and the importance of local historical contingencies.
Connectivity, Dispersal, Evolution, Microbial, Ocean
Ward, Ben
9063af30-e344-4626-9470-8db7c1543d05
Cael, B. B.
458442c7-574e-42dd-b2aa-717277e14eba
Collins, Sinead
bc8cf27d-2fe4-4cc7-8cd6-e7601445fc7c
Young, C. Robert
d0317505-e465-401a-be12-ae9e78c3f6cf
9 March 2021
Ward, Ben
9063af30-e344-4626-9470-8db7c1543d05
Cael, B. B.
458442c7-574e-42dd-b2aa-717277e14eba
Collins, Sinead
bc8cf27d-2fe4-4cc7-8cd6-e7601445fc7c
Young, C. Robert
d0317505-e465-401a-be12-ae9e78c3f6cf
Ward, Ben, Cael, B. B., Collins, Sinead and Young, C. Robert
(2021)
Selective constraints on global plankton dispersal.
Proceedings of the National Academy of Sciences of the United States of America, 118 (10), [e2007388118].
(doi:10.1073/pnas.2007388118).
Abstract
Marine microbial communities are highly interconnected assemblages of organisms shaped by ecological drift, natural selection, and dispersal. The relative strength of these forces determines how ecosystems respond to environmental gradients, how much diversity is resident in a community or population at any given time, and how populations reorganize and evolve in response to environmental perturbations. In this study, we introduce a globally resolved population–genetic ocean model in order to examine the interplay of dispersal, selection, and adaptive evolution and their effects on community assembly and global biogeography. We find that environmental selection places strong constraints on global dispersal, even in the face of extremely high assumed rates of adaptation. Changing the relative strengths of dispersal, selection, and adaptation has pronounced effects on community assembly in the model and suggests that barriers to dispersal play a key role in the structuring of marine communities, enhancing global biodiversity and the importance of local historical contingencies.
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Accepted/In Press date: 22 January 2021
e-pub ahead of print date: 9 March 2021
Published date: 9 March 2021
Additional Information:
Funding Information:
We thank two anonymous reviewers for their constructive assessment of this work. We thank Gael Forget for making the ECCO transport matrices available. We are also grateful to Daniel Richter and Julie Robidart for helpful comments on earlier drafts of this manuscript. B.A.W. was funded by a Royal Society University Research Fellowship. C.R.Y. was supported by UK Natural Environment Research Council (NERC) Grant NE/N006496/1 and NERC National Capability Funding.
Publisher Copyright:
© 2021 National Academy of Sciences. All rights reserved.
Keywords:
Connectivity, Dispersal, Evolution, Microbial, Ocean
Identifiers
Local EPrints ID: 446526
URI: http://eprints.soton.ac.uk/id/eprint/446526
ISSN: 0027-8424
PURE UUID: 4ff3aa32-f7ad-4ba9-9b4c-d27d734d1826
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Date deposited: 12 Feb 2021 17:31
Last modified: 16 Mar 2024 10:47
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Contributors
Author:
B. B. Cael
Author:
Sinead Collins
Author:
C. Robert Young
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