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Locations of marine animals revealed by carbon isotopes

Locations of marine animals revealed by carbon isotopes
Locations of marine animals revealed by carbon isotopes
Knowing the distribution of marine animals is central to understanding climatic and other environmental influences on population ecology. This information has proven difficult to gain through capture-based methods biased by capture location. Here we show that marine location can be inferred from animal tissues. As the carbon isotope composition of animal tissues varies with sea surface temperature, marine location can be identified by matching time series of carbon isotopes measured in tissues to sea surface temperature records. Applying this technique to populations of Atlantic salmon (Salmo salar L.) produces isotopically-derived maps of oceanic feeding grounds, consistent with the current understanding of salmon migrations, that additionally reveal geographic segregation in feeding grounds between individual philopatric populations and age-classes. Carbon isotope ratios can be used to identify the location of open ocean feeding grounds for any pelagic animals for which tissue archives and matching records of sea surface temperature are available.
Ecology, Animal behaviour, Oceanography
21
MacKenzie, Kirsteen M.
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Palmer, Martin R.
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Moore, Andy
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Ibbotson, Anton T.
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Beaumont, William R.C.
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Poulter, David J.S.
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Trueman, Clive N.
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MacKenzie, Kirsteen M.
512f2b73-f8e4-4ab4-8d91-16c0a2084120
Palmer, Martin R.
d2e60e81-5d6e-4ddb-a243-602537286080
Moore, Andy
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Ibbotson, Anton T.
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Beaumont, William R.C.
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Poulter, David J.S.
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Trueman, Clive N.
d00d3bd6-a47b-4d47-89ae-841c3d506205

MacKenzie, Kirsteen M., Palmer, Martin R., Moore, Andy, Ibbotson, Anton T., Beaumont, William R.C., Poulter, David J.S. and Trueman, Clive N. (2011) Locations of marine animals revealed by carbon isotopes. Scientific Reports, 1 (21), 21. (doi:10.1038/srep00021).

Record type: Article

Abstract

Knowing the distribution of marine animals is central to understanding climatic and other environmental influences on population ecology. This information has proven difficult to gain through capture-based methods biased by capture location. Here we show that marine location can be inferred from animal tissues. As the carbon isotope composition of animal tissues varies with sea surface temperature, marine location can be identified by matching time series of carbon isotopes measured in tissues to sea surface temperature records. Applying this technique to populations of Atlantic salmon (Salmo salar L.) produces isotopically-derived maps of oceanic feeding grounds, consistent with the current understanding of salmon migrations, that additionally reveal geographic segregation in feeding grounds between individual philopatric populations and age-classes. Carbon isotope ratios can be used to identify the location of open ocean feeding grounds for any pelagic animals for which tissue archives and matching records of sea surface temperature are available.

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More information

Published date: 2011
Keywords: Ecology, Animal behaviour, Oceanography
Organisations: Geochemistry, Ocean and Earth Science, National Oceanography Centre, National Oceanography Centre,Southampton

Identifiers

Local EPrints ID: 191761
URI: http://eprints.soton.ac.uk/id/eprint/191761
PURE UUID: 43a5274c-374a-4acc-b4bd-2f37dcbdf9cf

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Date deposited: 24 Jun 2011 10:19
Last modified: 20 Nov 2021 03:19

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Contributors

Author: Kirsteen M. MacKenzie
Author: Andy Moore
Author: Anton T. Ibbotson
Author: William R.C. Beaumont
Author: David J.S. Poulter

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