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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Detalles Bibliográficos
Autores principales: Carbonari, Jorge Eduardo, Huarte, Roberto Andrés, Poljak, Sebastián, Carlini, Alejandro Ricardo, Tonni, Eduardo Pedro, Soibelzon, Esteban, Soibelzon, Leopoldo Héctor, Negrete, Javier
Formato: Articulo
Lenguaje:Inglés
Publicado: 2011
Materias:
Paleontología
Ciencias Naturales
Antártida
crabeater seals; mummified seals; Lobodon carcinophaga
Carbono 14
Phocidae
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/5375
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-5375
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Paleontología
Ciencias Naturales
Antártida
crabeater seals; mummified seals; Lobodon carcinophaga
Carbono 14
Phocidae
spellingShingle Paleontología
Ciencias Naturales
Antártida
crabeater seals; mummified seals; Lobodon carcinophaga
Carbono 14
Phocidae
Carbonari, Jorge Eduardo
Huarte, Roberto Andrés
Poljak, Sebastián
Carlini, Alejandro Ricardo
Tonni, Eduardo Pedro
Soibelzon, Esteban
Soibelzon, Leopoldo Héctor
Negrete, Javier
Antarctic radiocarbon reservoir: the case of the mummified crabeater seals (<i>Lobodon Carcinophaga</i>) in Bodman Cape, Seymour Island, Antarctica
topic_facet 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.
format Articulo
Articulo
author Carbonari, Jorge Eduardo
Huarte, Roberto Andrés
Poljak, Sebastián
Carlini, Alejandro Ricardo
Tonni, Eduardo Pedro
Soibelzon, Esteban
Soibelzon, Leopoldo Héctor
Negrete, Javier
author_facet Carbonari, Jorge Eduardo
Huarte, Roberto Andrés
Poljak, Sebastián
Carlini, Alejandro Ricardo
Tonni, Eduardo Pedro
Soibelzon, Esteban
Soibelzon, Leopoldo Héctor
Negrete, Javier
author_sort Carbonari, Jorge Eduardo
title Antarctic radiocarbon reservoir: the case of the mummified crabeater seals (<i>Lobodon Carcinophaga</i>) in Bodman Cape, Seymour Island, Antarctica
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
publishDate 2011
url http://sedici.unlp.edu.ar/handle/10915/5375
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