Contrasting migratory responses of two closely-related seabirds to long-term climate change
Many marine predators migrate between breeding and non-breeding areas to target resources that are seasonal but spatio-temporally predictable, and so are vulnerable to climate-induced changes in prey phenology and abundance. In the Southern Ocean, small petrels are major consumers, but perturbations...
Published in: | Marine Ecology Progress Series |
---|---|
Main Authors: | , , , , , , , |
Other Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2016
|
Subjects: | |
Online Access: | https://hdl.handle.net/10023/10726 https://doi.org/10.3354/meps11875 http://eprints.gla.ac.uk/123065/ |
id |
ftstandrewserep:oai:research-repository.st-andrews.ac.uk:10023/10726 |
---|---|
record_format |
openpolar |
spelling |
ftstandrewserep:oai:research-repository.st-andrews.ac.uk:10023/10726 2024-09-15T17:47:58+00:00 Contrasting migratory responses of two closely-related seabirds to long-term climate change Grecian, W. James Taylor, Graeme A. Loh, Graeme McGill, Rona A. R. Miskelly, Colin M. Phillips, Richard A. Thompson, David R. Furness, Robert W. University of St Andrews.School of Biology University of St Andrews.Sea Mammal Research Unit University of St Andrews.Scottish Oceans Institute 2016-11-09 12 1199183 application/pdf https://hdl.handle.net/10023/10726 https://doi.org/10.3354/meps11875 http://eprints.gla.ac.uk/123065/ eng eng Marine Ecology Progress Series 249951353 df960e08-4f87-43ea-b2f3-60a3a18e743e 84994756758 Grecian , W J , Taylor , G A , Loh , G , McGill , R A R , Miskelly , C M , Phillips , R A , Thompson , D R & Furness , R W 2016 , ' Contrasting migratory responses of two closely-related seabirds to long-term climate change ' , Marine Ecology Progress Series , vol. 559 , pp. 231-242 . https://doi.org/10.3354/meps11875 0171-8630 ORCID: /0000-0002-6428-719X/work/32706772 https://hdl.handle.net/10023/10726 doi:10.3354/meps11875 http://eprints.gla.ac.uk/123065/ © The Authors 2016. Open Access under Creative Commons by Attribution Licence. Use, distribution and reproduction are unrestricted. Authors and original publication must be credited. Biologging Conservation Migration Moult Movement Non-breeding behaviour Seamounts Stable isotopes Upwelling zones QH301 Biology NDAS SDG 13 - Climate Action SDG 14 - Life Below Water QH301 Journal article 2016 ftstandrewserep https://doi.org/10.3354/meps11875 2024-08-21T00:01:29Z Many marine predators migrate between breeding and non-breeding areas to target resources that are seasonal but spatio-temporally predictable, and so are vulnerable to climate-induced changes in prey phenology and abundance. In the Southern Ocean, small petrels are major consumers, but perturbations in the ecosystem through ocean warming are altering food-web structure and have been linked to poleward shifts in the distribution of their cold-water zooplankton prey. In this study, we focused on 2 small congeneric petrels: the broad-billed prion Pachyptila vittata and the Antarctic prion P. desolata. Both are planktivorous, but the broad-billed prion specialises in feeding on large copepods. We investigated historical trends in non-breeding distribution by analysing feather stable isotope ratios from a time-series dating back to 1926, and examined contemporary non-breeding distributions of broad-billed prions tracked using miniaturised geolocation-immersion loggers. After controlling temporally for the Suess effect, we found that the δ13C signatures of Antarctic prions, but not broad-billed prions, declined during the study period. This suggests a southward shift in Antarctic prion non-breeding distribution over the last century. Both species exhibited significant declines in δ15N during the same period, indicative of long-term decreases in marine productivity in their moulting areas, or changes in the trophic structure of prey communities. Tracked broad-billed prions migrated ca. 1000 km to an area east of the breeding colony where the Louisville seamount chain bisects the subtropical front. Topographically driven upwellings are stable and predictable features and may be crucial in aggregating plankton. Targeting seamounts could therefore mitigate the impact of climate-induced prey shifts by providing refugia for the broad-billed prion. Peer reviewed Article in Journal/Newspaper Antarc* Antarctic Antarctic prion Southern Ocean Copepods University of St Andrews: Digital Research Repository Marine Ecology Progress Series 559 231 242 |
institution |
Open Polar |
collection |
University of St Andrews: Digital Research Repository |
op_collection_id |
ftstandrewserep |
language |
English |
topic |
Biologging Conservation Migration Moult Movement Non-breeding behaviour Seamounts Stable isotopes Upwelling zones QH301 Biology NDAS SDG 13 - Climate Action SDG 14 - Life Below Water QH301 |
spellingShingle |
Biologging Conservation Migration Moult Movement Non-breeding behaviour Seamounts Stable isotopes Upwelling zones QH301 Biology NDAS SDG 13 - Climate Action SDG 14 - Life Below Water QH301 Grecian, W. James Taylor, Graeme A. Loh, Graeme McGill, Rona A. R. Miskelly, Colin M. Phillips, Richard A. Thompson, David R. Furness, Robert W. Contrasting migratory responses of two closely-related seabirds to long-term climate change |
topic_facet |
Biologging Conservation Migration Moult Movement Non-breeding behaviour Seamounts Stable isotopes Upwelling zones QH301 Biology NDAS SDG 13 - Climate Action SDG 14 - Life Below Water QH301 |
description |
Many marine predators migrate between breeding and non-breeding areas to target resources that are seasonal but spatio-temporally predictable, and so are vulnerable to climate-induced changes in prey phenology and abundance. In the Southern Ocean, small petrels are major consumers, but perturbations in the ecosystem through ocean warming are altering food-web structure and have been linked to poleward shifts in the distribution of their cold-water zooplankton prey. In this study, we focused on 2 small congeneric petrels: the broad-billed prion Pachyptila vittata and the Antarctic prion P. desolata. Both are planktivorous, but the broad-billed prion specialises in feeding on large copepods. We investigated historical trends in non-breeding distribution by analysing feather stable isotope ratios from a time-series dating back to 1926, and examined contemporary non-breeding distributions of broad-billed prions tracked using miniaturised geolocation-immersion loggers. After controlling temporally for the Suess effect, we found that the δ13C signatures of Antarctic prions, but not broad-billed prions, declined during the study period. This suggests a southward shift in Antarctic prion non-breeding distribution over the last century. Both species exhibited significant declines in δ15N during the same period, indicative of long-term decreases in marine productivity in their moulting areas, or changes in the trophic structure of prey communities. Tracked broad-billed prions migrated ca. 1000 km to an area east of the breeding colony where the Louisville seamount chain bisects the subtropical front. Topographically driven upwellings are stable and predictable features and may be crucial in aggregating plankton. Targeting seamounts could therefore mitigate the impact of climate-induced prey shifts by providing refugia for the broad-billed prion. Peer reviewed |
author2 |
University of St Andrews.School of Biology University of St Andrews.Sea Mammal Research Unit University of St Andrews.Scottish Oceans Institute |
format |
Article in Journal/Newspaper |
author |
Grecian, W. James Taylor, Graeme A. Loh, Graeme McGill, Rona A. R. Miskelly, Colin M. Phillips, Richard A. Thompson, David R. Furness, Robert W. |
author_facet |
Grecian, W. James Taylor, Graeme A. Loh, Graeme McGill, Rona A. R. Miskelly, Colin M. Phillips, Richard A. Thompson, David R. Furness, Robert W. |
author_sort |
Grecian, W. James |
title |
Contrasting migratory responses of two closely-related seabirds to long-term climate change |
title_short |
Contrasting migratory responses of two closely-related seabirds to long-term climate change |
title_full |
Contrasting migratory responses of two closely-related seabirds to long-term climate change |
title_fullStr |
Contrasting migratory responses of two closely-related seabirds to long-term climate change |
title_full_unstemmed |
Contrasting migratory responses of two closely-related seabirds to long-term climate change |
title_sort |
contrasting migratory responses of two closely-related seabirds to long-term climate change |
publishDate |
2016 |
url |
https://hdl.handle.net/10023/10726 https://doi.org/10.3354/meps11875 http://eprints.gla.ac.uk/123065/ |
genre |
Antarc* Antarctic Antarctic prion Southern Ocean Copepods |
genre_facet |
Antarc* Antarctic Antarctic prion Southern Ocean Copepods |
op_relation |
Marine Ecology Progress Series 249951353 df960e08-4f87-43ea-b2f3-60a3a18e743e 84994756758 Grecian , W J , Taylor , G A , Loh , G , McGill , R A R , Miskelly , C M , Phillips , R A , Thompson , D R & Furness , R W 2016 , ' Contrasting migratory responses of two closely-related seabirds to long-term climate change ' , Marine Ecology Progress Series , vol. 559 , pp. 231-242 . https://doi.org/10.3354/meps11875 0171-8630 ORCID: /0000-0002-6428-719X/work/32706772 https://hdl.handle.net/10023/10726 doi:10.3354/meps11875 http://eprints.gla.ac.uk/123065/ |
op_rights |
© The Authors 2016. Open Access under Creative Commons by Attribution Licence. Use, distribution and reproduction are unrestricted. Authors and original publication must be credited. |
op_doi |
https://doi.org/10.3354/meps11875 |
container_title |
Marine Ecology Progress Series |
container_volume |
559 |
container_start_page |
231 |
op_container_end_page |
242 |
_version_ |
1810497727396577280 |