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dc.contributor.author
Domingo, Laura
dc.contributor.author
Tomassini, Rodrigo Leandro
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dc.contributor.author
Montalvo, Claudia Inés
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dc.contributor.author
Sanz Pérez, Dánae
dc.contributor.author
Alberdi, María Teresa
dc.date.available
2020-07-22T18:07:52Z
dc.date.issued
2020-01-31
dc.identifier.citation
Domingo, Laura; Tomassini, Rodrigo Leandro; Montalvo, Claudia Inés; Sanz Pérez, Dánae; Alberdi, María Teresa; The Great American Biotic Interchange revisited: a new perspective from the stable isotope record of Argentine Pampas fossil mammals; Nature Research; Scientific Reports; 10; 1; 31-1-2020
dc.identifier.issn
2045-2322
dc.identifier.uri
http://hdl.handle.net/11336/109941
dc.description.abstract
This study aims at assessing resource and habitat use, niche occupation and trophic interactions from a stable isotope perspective on fossil mammals from the Argentine Pampas during the Great American Biotic Interchange (GABI). We present stable isotope data of more than 400 samples belonging to 10 mammalian orders and spanning a temporal range from ~9.5 Ma to ~12 ky. Rodents, notoungulates and pilosians record an increase in the consumption of C4 plants, whereas litopterns and cingulates show δ13C values that remain mostly within a C3-dominated diet. Our stable isotope data indicates that the expansion of C4 vegetation opened up new niche opportunities, probably alleviating resource competition among endemic taxa. Gomphothere, equid and camelid δ13C records show a broad variability pointing to consumption of C3 and mixed C3-C4 vegetation. This flexible dietary behavior may have facilitated the successful settlement of immigrant groups in South America. In the case of carnivorous taxa, Late Miocene pre-GABI endemic sparassodonts consumed prey from C3 environments, whereas immigrant carnivorans preferred prey from mixed C3-C4 areas. Our research contributes to the study of the GABI from a different perspective as stable isotope records permit to characterize, from a (semi)quantitative standpoint, ecological traits within extinct fauna.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Nature Research
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/
dc.subject
ISOTOPY
dc.subject
CENOZOIC
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MAMMALS
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ARGENTINA
dc.subject.classification
Paleontología
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
The Great American Biotic Interchange revisited: a new perspective from the stable isotope record of Argentine Pampas fossil mammals
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-05-19T18:29:57Z
dc.journal.volume
10
dc.journal.number
1
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Londres
dc.description.fil
Fil: Domingo, Laura. University of California; Estados Unidos. Universidad Complutense de Madrid; España
dc.description.fil
Fil: Tomassini, Rodrigo Leandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
dc.description.fil
Fil: Montalvo, Claudia Inés. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales; Argentina
dc.description.fil
Fil: Sanz Pérez, Dánae. Universidad Complutense de Madrid; España
dc.description.fil
Fil: Alberdi, María Teresa. Consejo Superior de Investigaciones Científicas. Museo Nacional de Ciencias Naturales; España
dc.journal.title
Scientific Reports
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1038/s41598-020-58575-6
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.nature.com/articles/s41598-020-58575-6
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