Temporal and population trends in human exploited pinnipeds from Tierra del Fuego

Autores
Nye, Jonathan W.; Zangrando, Atilio Francisco Javier; Martinoli, Maria Paz; Fogel, Marilyn
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Archaeological sites on the coast of Tierra del Fuego, Argentina, provide a biogeochemical record that can inform us about those ecological dynamics. An abundance of southern fur seal (Arctocephalus australis) and southern sea lion (Otaria flavescens) remains provide a valuable resource to reconstruct ancient and modern food webs. To quantify ecological relationships, we measured bulk stable isotope ratios from bone collagen in otariids and other associated animals, several of which are potential otariid prey. Variations in bulk stable isotope ratios of carbon (δ13C) and nitrogen (δ15N) are linked to potential dietary differences and habitat specialization between coastal areas or the open ocean in populations ranging in age from 7000 cal. Years BP to modern. We observed increases in the variability of these isotopic compositions over time, which suggests a diversity in the diets and habitats of otariids. Shifts in marine food webs occurred during the transition from subsistence hunting of otariids to industrial hunting and expanded human influence. We conclude that direct human influences, such as hunting and habitat alteration, were the major drivers of ecological change in southern South American marine ecosystems.
Fil: Nye, Jonathan W.. University of California; Estados Unidos
Fil: Zangrando, Atilio Francisco Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Martinoli, Maria Paz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Fogel, Marilyn. University of California; Estados Unidos
Materia
ANTHROPOCENE
HOLOCENE
ORGANIC GEOCHEMISTRY
SOUTH AMERICA
STABLE ISOTOPES
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/129617
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Temporal and population trends in human exploited pinnipeds from Tierra del FuegoNye, Jonathan W.Zangrando, Atilio Francisco JavierMartinoli, Maria PazFogel, MarilynANTHROPOCENEHOLOCENEORGANIC GEOCHEMISTRYSOUTH AMERICASTABLE ISOTOPEShttps://purl.org/becyt/ford/6.1https://purl.org/becyt/ford/6Archaeological sites on the coast of Tierra del Fuego, Argentina, provide a biogeochemical record that can inform us about those ecological dynamics. An abundance of southern fur seal (Arctocephalus australis) and southern sea lion (Otaria flavescens) remains provide a valuable resource to reconstruct ancient and modern food webs. To quantify ecological relationships, we measured bulk stable isotope ratios from bone collagen in otariids and other associated animals, several of which are potential otariid prey. Variations in bulk stable isotope ratios of carbon (δ13C) and nitrogen (δ15N) are linked to potential dietary differences and habitat specialization between coastal areas or the open ocean in populations ranging in age from 7000 cal. Years BP to modern. We observed increases in the variability of these isotopic compositions over time, which suggests a diversity in the diets and habitats of otariids. Shifts in marine food webs occurred during the transition from subsistence hunting of otariids to industrial hunting and expanded human influence. We conclude that direct human influences, such as hunting and habitat alteration, were the major drivers of ecological change in southern South American marine ecosystems.Fil: Nye, Jonathan W.. University of California; Estados UnidosFil: Zangrando, Atilio Francisco Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaFil: Martinoli, Maria Paz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaFil: Fogel, Marilyn. University of California; Estados UnidosElsevier Science2020-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/129617Nye, Jonathan W.; Zangrando, Atilio Francisco Javier; Martinoli, Maria Paz; Fogel, Marilyn; Temporal and population trends in human exploited pinnipeds from Tierra del Fuego; Elsevier Science; Palaeogeography, Palaeoclimatology, Palaeoecology; 554; 9-2020; 1-200031-0182CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S0031018220302492info:eu-repo/semantics/altIdentifier/doi/10.1016/j.palaeo.2020.109804info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:18:53Zoai:ri.conicet.gov.ar:11336/129617instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:18:53.626CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Temporal and population trends in human exploited pinnipeds from Tierra del Fuego
title Temporal and population trends in human exploited pinnipeds from Tierra del Fuego
spellingShingle Temporal and population trends in human exploited pinnipeds from Tierra del Fuego
Nye, Jonathan W.
ANTHROPOCENE
HOLOCENE
ORGANIC GEOCHEMISTRY
SOUTH AMERICA
STABLE ISOTOPES
title_short Temporal and population trends in human exploited pinnipeds from Tierra del Fuego
title_full Temporal and population trends in human exploited pinnipeds from Tierra del Fuego
title_fullStr Temporal and population trends in human exploited pinnipeds from Tierra del Fuego
title_full_unstemmed Temporal and population trends in human exploited pinnipeds from Tierra del Fuego
title_sort Temporal and population trends in human exploited pinnipeds from Tierra del Fuego
dc.creator.none.fl_str_mv Nye, Jonathan W.
Zangrando, Atilio Francisco Javier
Martinoli, Maria Paz
Fogel, Marilyn
author Nye, Jonathan W.
author_facet Nye, Jonathan W.
Zangrando, Atilio Francisco Javier
Martinoli, Maria Paz
Fogel, Marilyn
author_role author
author2 Zangrando, Atilio Francisco Javier
Martinoli, Maria Paz
Fogel, Marilyn
author2_role author
author
author
dc.subject.none.fl_str_mv ANTHROPOCENE
HOLOCENE
ORGANIC GEOCHEMISTRY
SOUTH AMERICA
STABLE ISOTOPES
topic ANTHROPOCENE
HOLOCENE
ORGANIC GEOCHEMISTRY
SOUTH AMERICA
STABLE ISOTOPES
purl_subject.fl_str_mv https://purl.org/becyt/ford/6.1
https://purl.org/becyt/ford/6
dc.description.none.fl_txt_mv Archaeological sites on the coast of Tierra del Fuego, Argentina, provide a biogeochemical record that can inform us about those ecological dynamics. An abundance of southern fur seal (Arctocephalus australis) and southern sea lion (Otaria flavescens) remains provide a valuable resource to reconstruct ancient and modern food webs. To quantify ecological relationships, we measured bulk stable isotope ratios from bone collagen in otariids and other associated animals, several of which are potential otariid prey. Variations in bulk stable isotope ratios of carbon (δ13C) and nitrogen (δ15N) are linked to potential dietary differences and habitat specialization between coastal areas or the open ocean in populations ranging in age from 7000 cal. Years BP to modern. We observed increases in the variability of these isotopic compositions over time, which suggests a diversity in the diets and habitats of otariids. Shifts in marine food webs occurred during the transition from subsistence hunting of otariids to industrial hunting and expanded human influence. We conclude that direct human influences, such as hunting and habitat alteration, were the major drivers of ecological change in southern South American marine ecosystems.
Fil: Nye, Jonathan W.. University of California; Estados Unidos
Fil: Zangrando, Atilio Francisco Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Martinoli, Maria Paz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Fogel, Marilyn. University of California; Estados Unidos
description Archaeological sites on the coast of Tierra del Fuego, Argentina, provide a biogeochemical record that can inform us about those ecological dynamics. An abundance of southern fur seal (Arctocephalus australis) and southern sea lion (Otaria flavescens) remains provide a valuable resource to reconstruct ancient and modern food webs. To quantify ecological relationships, we measured bulk stable isotope ratios from bone collagen in otariids and other associated animals, several of which are potential otariid prey. Variations in bulk stable isotope ratios of carbon (δ13C) and nitrogen (δ15N) are linked to potential dietary differences and habitat specialization between coastal areas or the open ocean in populations ranging in age from 7000 cal. Years BP to modern. We observed increases in the variability of these isotopic compositions over time, which suggests a diversity in the diets and habitats of otariids. Shifts in marine food webs occurred during the transition from subsistence hunting of otariids to industrial hunting and expanded human influence. We conclude that direct human influences, such as hunting and habitat alteration, were the major drivers of ecological change in southern South American marine ecosystems.
publishDate 2020
dc.date.none.fl_str_mv 2020-09
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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://hdl.handle.net/11336/129617
Nye, Jonathan W.; Zangrando, Atilio Francisco Javier; Martinoli, Maria Paz; Fogel, Marilyn; Temporal and population trends in human exploited pinnipeds from Tierra del Fuego; Elsevier Science; Palaeogeography, Palaeoclimatology, Palaeoecology; 554; 9-2020; 1-20
0031-0182
CONICET Digital
CONICET
url http://hdl.handle.net/11336/129617
identifier_str_mv Nye, Jonathan W.; Zangrando, Atilio Francisco Javier; Martinoli, Maria Paz; Fogel, Marilyn; Temporal and population trends in human exploited pinnipeds from Tierra del Fuego; Elsevier Science; Palaeogeography, Palaeoclimatology, Palaeoecology; 554; 9-2020; 1-20
0031-0182
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S0031018220302492
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.palaeo.2020.109804
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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