Holocene variation in the Antarctic coastal food web: linking δD and δC13 in snow petrel diet and marine sediments
Here we present first time evidence for concordant variation in the isotopic signature at both the base and the upper levels of the Antarctic coastal food web during the Holocene. Laminae in sub-fossil deposits of snow petrel Pagodroina nivea stomach oil, known as mumiyo, were collected from nest-si...
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Online Access: | https://archimer.ifremer.fr/doc/00496/60808/64708.pdf https://doi.org/10.3354/meps306031 https://archimer.ifremer.fr/doc/00496/60808/ |
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ftarchimer:oai:archimer.ifremer.fr:60808 2023-05-15T13:47:36+02:00 Holocene variation in the Antarctic coastal food web: linking δD and δC13 in snow petrel diet and marine sediments Ainley, Dg Hobson, Ka Crosta, X Rau, Gh Wassenaar, Li Augustinus, Pc 2006 application/pdf https://archimer.ifremer.fr/doc/00496/60808/64708.pdf https://doi.org/10.3354/meps306031 https://archimer.ifremer.fr/doc/00496/60808/ eng eng Inter-research https://archimer.ifremer.fr/doc/00496/60808/64708.pdf doi:10.3354/meps306031 https://archimer.ifremer.fr/doc/00496/60808/ info:eu-repo/semantics/openAccess restricted use Marine Ecology Progress Series (0171-8630) (Inter-research), 2006 , Vol. 306 , P. 31-40 Antarctica Holocene climate change food webs isotopic analysis mumiyo Pagodroma nivea sediment cores snow petrel text Publication info:eu-repo/semantics/article 2006 ftarchimer https://doi.org/10.3354/meps306031 2021-09-23T20:32:46Z Here we present first time evidence for concordant variation in the isotopic signature at both the base and the upper levels of the Antarctic coastal food web during the Holocene. Laminae in sub-fossil deposits of snow petrel Pagodroina nivea stomach oil, known as mumiyo, were collected from nest-sites in the Bunger Hills, East Antarctica. Mumiyo layers were sub-sampled, radiocarbondated, and analyzed for delta C-13 and delta D. The obtained values were compared to isotopic variability among layers of an ocean sediment core collected, and similarly dated, in nearby Dumont D'Urville Trough. Overlapping records extended from about 10 160 to 526 calendar years before present (cal yr BP). Mumiyo delta D values remained relatively constant throughout the sampled period, in accordance with data from nearby ice cores. For C-13, both mumiyo and sediment were enriched during the warmer midHolocene (ca. 7500 to 5500 cal yr BP). Isotopic concordance between the core and the mumiyo, and a significant correlation between mumiyo delta D and delta C-13, suggest that past delta C-13 variation in plankton was transferred through diet to higher trophic levels and ultimately recorded in stomach oil of snow petrels. Divergence in signals during cold periods may indicate a shift in foraging by the petrels from C-13-enriched neritic prey to normally C-13-depleted pelagic prey, except for those pelagic prey encountered at the productive pack-ice edge during cooler periods, a shift forced by presumed greater sea-ice concentration during those times. Other air-breathing predators would likely respond in the same way. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Sea ice Snow Petrel Snow Petrels Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Antarctic Bunger Hills ENVELOPE(100.883,100.883,-66.167,-66.167) Dumont d'Urville ENVELOPE(140.017,140.017,-66.667,-66.667) Dumont d'Urville Trough ENVELOPE(136.000,136.000,-65.500,-65.500) Dumont-d'Urville ENVELOPE(140.013,140.013,-66.667,-66.667) East Antarctica Nivea ENVELOPE(-45.479,-45.479,-60.580,-60.580) The Antarctic Marine Ecology Progress Series 306 31 40 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Antarctica Holocene climate change food webs isotopic analysis mumiyo Pagodroma nivea sediment cores snow petrel |
spellingShingle |
Antarctica Holocene climate change food webs isotopic analysis mumiyo Pagodroma nivea sediment cores snow petrel Ainley, Dg Hobson, Ka Crosta, X Rau, Gh Wassenaar, Li Augustinus, Pc Holocene variation in the Antarctic coastal food web: linking δD and δC13 in snow petrel diet and marine sediments |
topic_facet |
Antarctica Holocene climate change food webs isotopic analysis mumiyo Pagodroma nivea sediment cores snow petrel |
description |
Here we present first time evidence for concordant variation in the isotopic signature at both the base and the upper levels of the Antarctic coastal food web during the Holocene. Laminae in sub-fossil deposits of snow petrel Pagodroina nivea stomach oil, known as mumiyo, were collected from nest-sites in the Bunger Hills, East Antarctica. Mumiyo layers were sub-sampled, radiocarbondated, and analyzed for delta C-13 and delta D. The obtained values were compared to isotopic variability among layers of an ocean sediment core collected, and similarly dated, in nearby Dumont D'Urville Trough. Overlapping records extended from about 10 160 to 526 calendar years before present (cal yr BP). Mumiyo delta D values remained relatively constant throughout the sampled period, in accordance with data from nearby ice cores. For C-13, both mumiyo and sediment were enriched during the warmer midHolocene (ca. 7500 to 5500 cal yr BP). Isotopic concordance between the core and the mumiyo, and a significant correlation between mumiyo delta D and delta C-13, suggest that past delta C-13 variation in plankton was transferred through diet to higher trophic levels and ultimately recorded in stomach oil of snow petrels. Divergence in signals during cold periods may indicate a shift in foraging by the petrels from C-13-enriched neritic prey to normally C-13-depleted pelagic prey, except for those pelagic prey encountered at the productive pack-ice edge during cooler periods, a shift forced by presumed greater sea-ice concentration during those times. Other air-breathing predators would likely respond in the same way. |
format |
Article in Journal/Newspaper |
author |
Ainley, Dg Hobson, Ka Crosta, X Rau, Gh Wassenaar, Li Augustinus, Pc |
author_facet |
Ainley, Dg Hobson, Ka Crosta, X Rau, Gh Wassenaar, Li Augustinus, Pc |
author_sort |
Ainley, Dg |
title |
Holocene variation in the Antarctic coastal food web: linking δD and δC13 in snow petrel diet and marine sediments |
title_short |
Holocene variation in the Antarctic coastal food web: linking δD and δC13 in snow petrel diet and marine sediments |
title_full |
Holocene variation in the Antarctic coastal food web: linking δD and δC13 in snow petrel diet and marine sediments |
title_fullStr |
Holocene variation in the Antarctic coastal food web: linking δD and δC13 in snow petrel diet and marine sediments |
title_full_unstemmed |
Holocene variation in the Antarctic coastal food web: linking δD and δC13 in snow petrel diet and marine sediments |
title_sort |
holocene variation in the antarctic coastal food web: linking δd and δc13 in snow petrel diet and marine sediments |
publisher |
Inter-research |
publishDate |
2006 |
url |
https://archimer.ifremer.fr/doc/00496/60808/64708.pdf https://doi.org/10.3354/meps306031 https://archimer.ifremer.fr/doc/00496/60808/ |
long_lat |
ENVELOPE(100.883,100.883,-66.167,-66.167) ENVELOPE(140.017,140.017,-66.667,-66.667) ENVELOPE(136.000,136.000,-65.500,-65.500) ENVELOPE(140.013,140.013,-66.667,-66.667) ENVELOPE(-45.479,-45.479,-60.580,-60.580) |
geographic |
Antarctic Bunger Hills Dumont d'Urville Dumont d'Urville Trough Dumont-d'Urville East Antarctica Nivea The Antarctic |
geographic_facet |
Antarctic Bunger Hills Dumont d'Urville Dumont d'Urville Trough Dumont-d'Urville East Antarctica Nivea The Antarctic |
genre |
Antarc* Antarctic Antarctica East Antarctica Sea ice Snow Petrel Snow Petrels |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Sea ice Snow Petrel Snow Petrels |
op_source |
Marine Ecology Progress Series (0171-8630) (Inter-research), 2006 , Vol. 306 , P. 31-40 |
op_relation |
https://archimer.ifremer.fr/doc/00496/60808/64708.pdf doi:10.3354/meps306031 https://archimer.ifremer.fr/doc/00496/60808/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.3354/meps306031 |
container_title |
Marine Ecology Progress Series |
container_volume |
306 |
container_start_page |
31 |
op_container_end_page |
40 |
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1766247507800621056 |