Antarctic radiocarbon reservoir: the case of the mummified crabeater seals (<i>Lobodon Carcinophaga</i>) in Bodman Cape, Seymour Island, Antarctica

At least 50% of the world's seal population is distributed in the pack-ice region surrounding Antarctica. Among the Antarctic seals, Lobodon carcinophaga (commonly known as "crabeater seals") are the most abundant. This is a krill-feeding species, subsisting primarily on Euphausia sup...

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Autores: Carbonari, Jorge Eduardo, Huarte, Roberto Andrés, Poljak, Sebastián, Carlini, Alejandro Ricardo, Tonni, Eduardo Pedro, Soibelzon, Esteban, Soibelzon, Leopoldo Héctor, Negrete, Javier
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2011
País:Argentina
Institución:Universidad Nacional de La Plata
Repositorio:SEDICI (UNLP)
Idioma:inglés
OAI Identifier:oai:sedici.unlp.edu.ar:10915/5375
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/5375
Access Level:acceso abierto
Palabra clave:Paleontología
Ciencias Naturales
Antártida
crabeater seals; mummified seals; Lobodon carcinophaga
Carbono 14
Phocidae
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repository_id_str
spelling Antarctic radiocarbon reservoir: the case of the mummified crabeater seals (<i>Lobodon Carcinophaga</i>) in Bodman Cape, Seymour Island, AntarcticaCarbonari, Jorge EduardoHuarte, Roberto AndrésPoljak, SebastiánCarlini, Alejandro RicardoTonni, Eduardo PedroSoibelzon, EstebanSoibelzon, Leopoldo HéctorNegrete, JavierPaleontologíaCiencias NaturalesAntártidacrabeater seals; mummified seals; Lobodon carcinophagaCarbono 14PhocidaeAt least 50% of the world's seal population is distributed in the pack-ice region surrounding Antarctica. Among the Antarctic seals, Lobodon carcinophaga (commonly known as "crabeater seals") are the most abundant. This is a krill-feeding species, subsisting primarily on Euphausia superba. The occurrence of mummified seals has been documented since 1900 in several Antarctic regions, and different hypotheses about age and what happened to them have been proposed. Taking into account the depletion of 14C concentration in marine waters, we dated a recently deceased and a mummified L. carcinophaga along with a mollusk (Nacella concinna) collected alive from different locations around Antarctica. We discuss their relationship in light of the 14C reservoir. The age obtained for the recently deceased crabeater seals suggests a reservoir age of around 1300 yr for these waters, which is in agreement with the correction value for reservoir age obtained for the same species in the area. We applied this reservoir correction value to the conventional age of 1180 14C yr BP obtained for the mummified seal. The results indicate that the death event probably occurred within the last 100 yr. The age obtained for the mollusk specimen confirms that the correction values of the reservoir effect for the Antarctic continent vary according to geographical location and to the type of sample dated.Museo de La Plata2011info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf161-166http://sedici.unlp.edu.ar/handle/10915/5375enginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc/3.0/Creative Commons Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2024-05-08T12:29:02Zoai:sedici.unlp.edu.ar:10915/5375Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292024-05-08 12:29:02.396SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Antarctic radiocarbon reservoir: the case of the mummified crabeater seals (<i>Lobodon Carcinophaga</i>) in Bodman Cape, Seymour Island, Antarctica
title Antarctic radiocarbon reservoir: the case of the mummified crabeater seals (<i>Lobodon Carcinophaga</i>) in Bodman Cape, Seymour Island, Antarctica
spellingShingle Antarctic radiocarbon reservoir: the case of the mummified crabeater seals (<i>Lobodon Carcinophaga</i>) in Bodman Cape, Seymour Island, Antarctica
Carbonari, Jorge Eduardo
Paleontología
Ciencias Naturales
Antártida
crabeater seals; mummified seals; Lobodon carcinophaga
Carbono 14
Phocidae
title_short Antarctic radiocarbon reservoir: the case of the mummified crabeater seals (<i>Lobodon Carcinophaga</i>) in Bodman Cape, Seymour Island, Antarctica
title_full Antarctic radiocarbon reservoir: the case of the mummified crabeater seals (<i>Lobodon Carcinophaga</i>) in Bodman Cape, Seymour Island, Antarctica
title_fullStr Antarctic radiocarbon reservoir: the case of the mummified crabeater seals (<i>Lobodon Carcinophaga</i>) in Bodman Cape, Seymour Island, Antarctica
title_full_unstemmed Antarctic radiocarbon reservoir: the case of the mummified crabeater seals (<i>Lobodon Carcinophaga</i>) in Bodman Cape, Seymour Island, Antarctica
title_sort Antarctic radiocarbon reservoir: the case of the mummified crabeater seals (<i>Lobodon Carcinophaga</i>) in Bodman Cape, Seymour Island, Antarctica
dc.creator.none.fl_str_mv Carbonari, Jorge Eduardo
Huarte, Roberto Andrés
Poljak, Sebastián
Carlini, Alejandro Ricardo
Tonni, Eduardo Pedro
Soibelzon, Esteban
Soibelzon, Leopoldo Héctor
Negrete, Javier
author Carbonari, Jorge Eduardo
author_facet Carbonari, Jorge Eduardo
Huarte, Roberto Andrés
Poljak, Sebastián
Carlini, Alejandro Ricardo
Tonni, Eduardo Pedro
Soibelzon, Esteban
Soibelzon, Leopoldo Héctor
Negrete, Javier
author_role author
author2 Huarte, Roberto Andrés
Poljak, Sebastián
Carlini, Alejandro Ricardo
Tonni, Eduardo Pedro
Soibelzon, Esteban
Soibelzon, Leopoldo Héctor
Negrete, Javier
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Paleontología
Ciencias Naturales
Antártida
crabeater seals; mummified seals; Lobodon carcinophaga
Carbono 14
Phocidae
topic Paleontología
Ciencias Naturales
Antártida
crabeater seals; mummified seals; Lobodon carcinophaga
Carbono 14
Phocidae
description At least 50% of the world's seal population is distributed in the pack-ice region surrounding Antarctica. Among the Antarctic seals, Lobodon carcinophaga (commonly known as "crabeater seals") are the most abundant. This is a krill-feeding species, subsisting primarily on Euphausia superba. The occurrence of mummified seals has been documented since 1900 in several Antarctic regions, and different hypotheses about age and what happened to them have been proposed. Taking into account the depletion of 14C concentration in marine waters, we dated a recently deceased and a mummified L. carcinophaga along with a mollusk (Nacella concinna) collected alive from different locations around Antarctica. We discuss their relationship in light of the 14C reservoir. The age obtained for the recently deceased crabeater seals suggests a reservoir age of around 1300 yr for these waters, which is in agreement with the correction value for reservoir age obtained for the same species in the area. We applied this reservoir correction value to the conventional age of 1180 14C yr BP obtained for the mummified seal. The results indicate that the death event probably occurred within the last 100 yr. The age obtained for the mollusk specimen confirms that the correction values of the reservoir effect for the Antarctic continent vary according to geographical location and to the type of sample dated.
publishDate 2011
dc.date.none.fl_str_mv 2011
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/5375
url http://sedici.unlp.edu.ar/handle/10915/5375
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc/3.0/
Creative Commons Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc/3.0/
Creative Commons Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0)
dc.format.none.fl_str_mv application/pdf
161-166
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 15,811543

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