Long-term stability in the circumpolar foraging range of a Southern Ocean predator between the eras of whaling and rapid climate change
Assessing environmental changes in Southern Ocean ecosystems is difficult due to its remoteness and data sparsity. Monitoring marine predators that respond rapidly to environmental variation may enable us to track anthropogenic effects on ecosystems. Yet, many long-term datasets of marine predators...
Published in: | Proceedings of the National Academy of Sciences |
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Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10013836/ http://www.ncbi.nlm.nih.gov/pubmed/36848574 https://doi.org/10.1073/pnas.2214035120 |
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ftpubmed:oai:pubmedcentral.nih.gov:10013836 2023-10-01T03:52:09+02:00 Long-term stability in the circumpolar foraging range of a Southern Ocean predator between the eras of whaling and rapid climate change Derville, Solène Torres, Leigh G. Newsome, Seth D. Somes, Christopher J. Valenzuela, Luciano O. Vander Zanden, Hannah B. Baker, C. Scott Bérubé, Martine Busquets-Vass, Geraldine Carlyon, Kris Childerhouse, Simon J. Constantine, Rochelle Dunshea, Glenn Flores, Paulo A. C. Goldsworthy, Simon D. Graham, Brittany Groch, Karina Gröcke, Darren R. Harcourt, Robert Hindell, Mark A. Hulva, Pavel Jackson, Jennifer A. Kennedy, Amy S. Lundquist, David Mackay, Alice I. Neveceralova, Petra Oliveira, Larissa Ott, Paulo H. Palsbøll, Per J. Patenaude, Nathalie J. Rowntree, Victoria Sironi, Mariano Vermeuelen, Els Watson, Mandy Zerbini, Alexandre N. Carroll, Emma L. 2023-02-27 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10013836/ http://www.ncbi.nlm.nih.gov/pubmed/36848574 https://doi.org/10.1073/pnas.2214035120 en eng National Academy of Sciences http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10013836/ http://www.ncbi.nlm.nih.gov/pubmed/36848574 http://dx.doi.org/10.1073/pnas.2214035120 Copyright © 2023 the Author(s). Published by PNAS. https://creativecommons.org/licenses/by-nc-nd/4.0/This article is distributed under Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND) (https://creativecommons.org/licenses/by-nc-nd/4.0/) . Proc Natl Acad Sci U S A Biological Sciences Text 2023 ftpubmed https://doi.org/10.1073/pnas.2214035120 2023-09-03T00:51:38Z Assessing environmental changes in Southern Ocean ecosystems is difficult due to its remoteness and data sparsity. Monitoring marine predators that respond rapidly to environmental variation may enable us to track anthropogenic effects on ecosystems. Yet, many long-term datasets of marine predators are incomplete because they are spatially constrained and/or track ecosystems already modified by industrial fishing and whaling in the latter half of the 20th century. Here, we assess the contemporary offshore distribution of a wide-ranging marine predator, the southern right whale (SRW, Eubalaena australis), that forages on copepods and krill from ~30°S to the Antarctic ice edge (>60°S). We analyzed carbon and nitrogen isotope values of 1,002 skin samples from six genetically distinct SRW populations using a customized assignment approach that accounts for temporal and spatial variation in the Southern Ocean phytoplankton isoscape. Over the past three decades, SRWs increased their use of mid-latitude foraging grounds in the south Atlantic and southwest (SW) Indian oceans in the late austral summer and autumn and slightly increased their use of high-latitude (>60°S) foraging grounds in the SW Pacific, coincident with observed changes in prey distribution and abundance on a circumpolar scale. Comparing foraging assignments with whaling records since the 18th century showed remarkable stability in use of mid-latitude foraging areas. We attribute this consistency across four centuries to the physical stability of ocean fronts and resulting productivity in mid-latitude ecosystems of the Southern Ocean compared with polar regions that may be more influenced by recent climate change. Text Antarc* Antarctic Southern Ocean Southern Right Whale Copepods PubMed Central (PMC) Antarctic Southern Ocean The Antarctic Austral Pacific Indian Proceedings of the National Academy of Sciences 120 10 |
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English |
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Biological Sciences |
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Biological Sciences Derville, Solène Torres, Leigh G. Newsome, Seth D. Somes, Christopher J. Valenzuela, Luciano O. Vander Zanden, Hannah B. Baker, C. Scott Bérubé, Martine Busquets-Vass, Geraldine Carlyon, Kris Childerhouse, Simon J. Constantine, Rochelle Dunshea, Glenn Flores, Paulo A. C. Goldsworthy, Simon D. Graham, Brittany Groch, Karina Gröcke, Darren R. Harcourt, Robert Hindell, Mark A. Hulva, Pavel Jackson, Jennifer A. Kennedy, Amy S. Lundquist, David Mackay, Alice I. Neveceralova, Petra Oliveira, Larissa Ott, Paulo H. Palsbøll, Per J. Patenaude, Nathalie J. Rowntree, Victoria Sironi, Mariano Vermeuelen, Els Watson, Mandy Zerbini, Alexandre N. Carroll, Emma L. Long-term stability in the circumpolar foraging range of a Southern Ocean predator between the eras of whaling and rapid climate change |
topic_facet |
Biological Sciences |
description |
Assessing environmental changes in Southern Ocean ecosystems is difficult due to its remoteness and data sparsity. Monitoring marine predators that respond rapidly to environmental variation may enable us to track anthropogenic effects on ecosystems. Yet, many long-term datasets of marine predators are incomplete because they are spatially constrained and/or track ecosystems already modified by industrial fishing and whaling in the latter half of the 20th century. Here, we assess the contemporary offshore distribution of a wide-ranging marine predator, the southern right whale (SRW, Eubalaena australis), that forages on copepods and krill from ~30°S to the Antarctic ice edge (>60°S). We analyzed carbon and nitrogen isotope values of 1,002 skin samples from six genetically distinct SRW populations using a customized assignment approach that accounts for temporal and spatial variation in the Southern Ocean phytoplankton isoscape. Over the past three decades, SRWs increased their use of mid-latitude foraging grounds in the south Atlantic and southwest (SW) Indian oceans in the late austral summer and autumn and slightly increased their use of high-latitude (>60°S) foraging grounds in the SW Pacific, coincident with observed changes in prey distribution and abundance on a circumpolar scale. Comparing foraging assignments with whaling records since the 18th century showed remarkable stability in use of mid-latitude foraging areas. We attribute this consistency across four centuries to the physical stability of ocean fronts and resulting productivity in mid-latitude ecosystems of the Southern Ocean compared with polar regions that may be more influenced by recent climate change. |
format |
Text |
author |
Derville, Solène Torres, Leigh G. Newsome, Seth D. Somes, Christopher J. Valenzuela, Luciano O. Vander Zanden, Hannah B. Baker, C. Scott Bérubé, Martine Busquets-Vass, Geraldine Carlyon, Kris Childerhouse, Simon J. Constantine, Rochelle Dunshea, Glenn Flores, Paulo A. C. Goldsworthy, Simon D. Graham, Brittany Groch, Karina Gröcke, Darren R. Harcourt, Robert Hindell, Mark A. Hulva, Pavel Jackson, Jennifer A. Kennedy, Amy S. Lundquist, David Mackay, Alice I. Neveceralova, Petra Oliveira, Larissa Ott, Paulo H. Palsbøll, Per J. Patenaude, Nathalie J. Rowntree, Victoria Sironi, Mariano Vermeuelen, Els Watson, Mandy Zerbini, Alexandre N. Carroll, Emma L. |
author_facet |
Derville, Solène Torres, Leigh G. Newsome, Seth D. Somes, Christopher J. Valenzuela, Luciano O. Vander Zanden, Hannah B. Baker, C. Scott Bérubé, Martine Busquets-Vass, Geraldine Carlyon, Kris Childerhouse, Simon J. Constantine, Rochelle Dunshea, Glenn Flores, Paulo A. C. Goldsworthy, Simon D. Graham, Brittany Groch, Karina Gröcke, Darren R. Harcourt, Robert Hindell, Mark A. Hulva, Pavel Jackson, Jennifer A. Kennedy, Amy S. Lundquist, David Mackay, Alice I. Neveceralova, Petra Oliveira, Larissa Ott, Paulo H. Palsbøll, Per J. Patenaude, Nathalie J. Rowntree, Victoria Sironi, Mariano Vermeuelen, Els Watson, Mandy Zerbini, Alexandre N. Carroll, Emma L. |
author_sort |
Derville, Solène |
title |
Long-term stability in the circumpolar foraging range of a Southern Ocean predator between the eras of whaling and rapid climate change |
title_short |
Long-term stability in the circumpolar foraging range of a Southern Ocean predator between the eras of whaling and rapid climate change |
title_full |
Long-term stability in the circumpolar foraging range of a Southern Ocean predator between the eras of whaling and rapid climate change |
title_fullStr |
Long-term stability in the circumpolar foraging range of a Southern Ocean predator between the eras of whaling and rapid climate change |
title_full_unstemmed |
Long-term stability in the circumpolar foraging range of a Southern Ocean predator between the eras of whaling and rapid climate change |
title_sort |
long-term stability in the circumpolar foraging range of a southern ocean predator between the eras of whaling and rapid climate change |
publisher |
National Academy of Sciences |
publishDate |
2023 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10013836/ http://www.ncbi.nlm.nih.gov/pubmed/36848574 https://doi.org/10.1073/pnas.2214035120 |
geographic |
Antarctic Southern Ocean The Antarctic Austral Pacific Indian |
geographic_facet |
Antarctic Southern Ocean The Antarctic Austral Pacific Indian |
genre |
Antarc* Antarctic Southern Ocean Southern Right Whale Copepods |
genre_facet |
Antarc* Antarctic Southern Ocean Southern Right Whale Copepods |
op_source |
Proc Natl Acad Sci U S A |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10013836/ http://www.ncbi.nlm.nih.gov/pubmed/36848574 http://dx.doi.org/10.1073/pnas.2214035120 |
op_rights |
Copyright © 2023 the Author(s). Published by PNAS. https://creativecommons.org/licenses/by-nc-nd/4.0/This article is distributed under Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND) (https://creativecommons.org/licenses/by-nc-nd/4.0/) . |
op_doi |
https://doi.org/10.1073/pnas.2214035120 |
container_title |
Proceedings of the National Academy of Sciences |
container_volume |
120 |
container_issue |
10 |
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1778517867309826048 |