Why is Tegula atra (Lesson) (Gastropoda) extinct from Patagonia? Biotic response to late Quaternary climate changes in the Southwestern Atlantic
- Autores
- Aguirre, Marina Laura; Richiano, Sebastián Miguel; Donato, Mariano Humberto; Farinati, Ester Amanda
- Año de publicación
- 2014
- Idioma
- inglés
- Tipo de recurso
- documento de conferencia
- Estado
- versión publicada
- Descripción
- The regional palaeobiogeographical context of Tegula atra (Lesson) revealed that it is a keystone endemic species within the marine Quaternary of Patagonia (Argentina, Southwestern Atlantic, SWA). A detailed systematic review together with field observations showed that it was absent from warmer than present Neogene sea-level episodes (e.g., late Miocene, ?Entrerriense?, ca. 10 Ma) and up to the mid-Pleistocene (Marine Isotope Stage 11 (MIS), ca. 400ka B.P.). By contrast, it exhibits an excellent and abundant, Late Pleistocene fossil record (MIS9, MIS7 and especially MIS5), along more than 1000 km between Río Negro and southern Santa Cruz provinces (Patagonia). A total of 130 collected bulk samples (complete sedimentary matrix and molluscan content) containing T. atra from more than 30 Pleistocene fossiliferous sites in 9 wider geographical areas (San Antonio Oeste, Puerto Lobos, Bahía Vera, Cabo Raso, Camarones, Bahía Bustamante, Caleta Olivia, Puerto Mazarredo, Puerto Deseado, San Julián) analyzed through multivariate and cladistic techniques confirmed its importance as a biostratigraphical/paleoclimate/palaeoceanographical signal within dominantly cool coastal settings. Additionally, morphometric analyses of Pleistocene (Patagonian) and modern (Pacific, Southeastern Pacific, SEP) specimens and Ancestral Areas analysis showed that after its first appearance in the SEP during the late Pliocene (cooling trend) it dispersed during the late Pleistocene into the SWA by rafting on macroalgae (Durvillaea antarctica) along the Cabo de Hornos and Malvinas (Falkland) currents, becoming extinct in the Mar Argentino (Magellan Malacological province) after the Last Interglacial (MIS5). Its absence today represents a climate change-driven range shift following the amelioration trend after the Last Glacial Maximum (LGM) and an independent evidence for palaeoceanographical changes at the Pleistocene/Holocene transition: changes in sea surface temperature (SST)(ca. 2°C higher), wind velocities (less), light (less), nutrient availability (less), extension and intensity of cold (less) and warm (increased) shallow water currents altering water masses, productivity and biogeographical boundaries. Disadvantageous Holocene scenarios must have caused direct effects on its physiology and survival and prevented the occurrence of D.antarctica and a successful dispersal along the SWA, while its retraction to the cold Humboldt System was impossible (northwards direction of SWA cold currents). Dispersalist models explain the origin of key taxa such as T. atra and taxonomic differences along the SWA and SEP margins of South America with implications for future coastal scenarios. The distribution of T. atra across time reinforces strong linkages between earth history-climatic cycles-atmospheric-oceanic circulation patterns and biotic responses, showing future climate change consequences expected on nearshore communities.
Fil: Aguirre, Marina Laura. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
Fil: Richiano, Sebastián Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Donato, Mariano Humberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Limnología "Dr. Raúl A. Ringuelet". Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Limnología; Argentina
Fil: Farinati, Ester Amanda. Universidad Nacional del Sur; Argentina
4º International Palaeontological Congress
Mendoza
Argentina
Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales
International Paleontological Association - Materia
-
GASTROPODA
SOUTHWESTERN ATLANTIC
LAST GLACIAL MAXIMUM
QUATERNARY - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/237999
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Why is Tegula atra (Lesson) (Gastropoda) extinct from Patagonia? Biotic response to late Quaternary climate changes in the Southwestern AtlanticAguirre, Marina LauraRichiano, Sebastián MiguelDonato, Mariano HumbertoFarinati, Ester AmandaGASTROPODASOUTHWESTERN ATLANTICLAST GLACIAL MAXIMUMQUATERNARYhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The regional palaeobiogeographical context of Tegula atra (Lesson) revealed that it is a keystone endemic species within the marine Quaternary of Patagonia (Argentina, Southwestern Atlantic, SWA). A detailed systematic review together with field observations showed that it was absent from warmer than present Neogene sea-level episodes (e.g., late Miocene, ?Entrerriense?, ca. 10 Ma) and up to the mid-Pleistocene (Marine Isotope Stage 11 (MIS), ca. 400ka B.P.). By contrast, it exhibits an excellent and abundant, Late Pleistocene fossil record (MIS9, MIS7 and especially MIS5), along more than 1000 km between Río Negro and southern Santa Cruz provinces (Patagonia). A total of 130 collected bulk samples (complete sedimentary matrix and molluscan content) containing T. atra from more than 30 Pleistocene fossiliferous sites in 9 wider geographical areas (San Antonio Oeste, Puerto Lobos, Bahía Vera, Cabo Raso, Camarones, Bahía Bustamante, Caleta Olivia, Puerto Mazarredo, Puerto Deseado, San Julián) analyzed through multivariate and cladistic techniques confirmed its importance as a biostratigraphical/paleoclimate/palaeoceanographical signal within dominantly cool coastal settings. Additionally, morphometric analyses of Pleistocene (Patagonian) and modern (Pacific, Southeastern Pacific, SEP) specimens and Ancestral Areas analysis showed that after its first appearance in the SEP during the late Pliocene (cooling trend) it dispersed during the late Pleistocene into the SWA by rafting on macroalgae (Durvillaea antarctica) along the Cabo de Hornos and Malvinas (Falkland) currents, becoming extinct in the Mar Argentino (Magellan Malacological province) after the Last Interglacial (MIS5). Its absence today represents a climate change-driven range shift following the amelioration trend after the Last Glacial Maximum (LGM) and an independent evidence for palaeoceanographical changes at the Pleistocene/Holocene transition: changes in sea surface temperature (SST)(ca. 2°C higher), wind velocities (less), light (less), nutrient availability (less), extension and intensity of cold (less) and warm (increased) shallow water currents altering water masses, productivity and biogeographical boundaries. Disadvantageous Holocene scenarios must have caused direct effects on its physiology and survival and prevented the occurrence of D.antarctica and a successful dispersal along the SWA, while its retraction to the cold Humboldt System was impossible (northwards direction of SWA cold currents). Dispersalist models explain the origin of key taxa such as T. atra and taxonomic differences along the SWA and SEP margins of South America with implications for future coastal scenarios. The distribution of T. atra across time reinforces strong linkages between earth history-climatic cycles-atmospheric-oceanic circulation patterns and biotic responses, showing future climate change consequences expected on nearshore communities.Fil: Aguirre, Marina Laura. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaFil: Richiano, Sebastián Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; ArgentinaFil: Donato, Mariano Humberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Limnología "Dr. Raúl A. Ringuelet". Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Limnología; ArgentinaFil: Farinati, Ester Amanda. Universidad Nacional del Sur; Argentina4º International Palaeontological CongressMendozaArgentinaInstituto Argentino de Nivología, Glaciología y Ciencias AmbientalesInternational Paleontological AssociationUniversidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Museo de Historia Natural de San RafaelCerdeño Serrano, Maria Esperanza2014info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectCongresoBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/237999Why is Tegula atra (Lesson) (Gastropoda) extinct from Patagonia? Biotic response to late Quaternary climate changes in the Southwestern Atlantic; 4º International Palaeontological Congress; Mendoza; Argentina; 2014; 640-640CONICET DigitalCONICETengInternacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:11:03Zoai:ri.conicet.gov.ar:11336/237999instacron: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:34982025-09-03 10:11:03.652CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Why is Tegula atra (Lesson) (Gastropoda) extinct from Patagonia? Biotic response to late Quaternary climate changes in the Southwestern Atlantic |
title |
Why is Tegula atra (Lesson) (Gastropoda) extinct from Patagonia? Biotic response to late Quaternary climate changes in the Southwestern Atlantic |
spellingShingle |
Why is Tegula atra (Lesson) (Gastropoda) extinct from Patagonia? Biotic response to late Quaternary climate changes in the Southwestern Atlantic Aguirre, Marina Laura GASTROPODA SOUTHWESTERN ATLANTIC LAST GLACIAL MAXIMUM QUATERNARY |
title_short |
Why is Tegula atra (Lesson) (Gastropoda) extinct from Patagonia? Biotic response to late Quaternary climate changes in the Southwestern Atlantic |
title_full |
Why is Tegula atra (Lesson) (Gastropoda) extinct from Patagonia? Biotic response to late Quaternary climate changes in the Southwestern Atlantic |
title_fullStr |
Why is Tegula atra (Lesson) (Gastropoda) extinct from Patagonia? Biotic response to late Quaternary climate changes in the Southwestern Atlantic |
title_full_unstemmed |
Why is Tegula atra (Lesson) (Gastropoda) extinct from Patagonia? Biotic response to late Quaternary climate changes in the Southwestern Atlantic |
title_sort |
Why is Tegula atra (Lesson) (Gastropoda) extinct from Patagonia? Biotic response to late Quaternary climate changes in the Southwestern Atlantic |
dc.creator.none.fl_str_mv |
Aguirre, Marina Laura Richiano, Sebastián Miguel Donato, Mariano Humberto Farinati, Ester Amanda |
author |
Aguirre, Marina Laura |
author_facet |
Aguirre, Marina Laura Richiano, Sebastián Miguel Donato, Mariano Humberto Farinati, Ester Amanda |
author_role |
author |
author2 |
Richiano, Sebastián Miguel Donato, Mariano Humberto Farinati, Ester Amanda |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Cerdeño Serrano, Maria Esperanza |
dc.subject.none.fl_str_mv |
GASTROPODA SOUTHWESTERN ATLANTIC LAST GLACIAL MAXIMUM QUATERNARY |
topic |
GASTROPODA SOUTHWESTERN ATLANTIC LAST GLACIAL MAXIMUM QUATERNARY |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
The regional palaeobiogeographical context of Tegula atra (Lesson) revealed that it is a keystone endemic species within the marine Quaternary of Patagonia (Argentina, Southwestern Atlantic, SWA). A detailed systematic review together with field observations showed that it was absent from warmer than present Neogene sea-level episodes (e.g., late Miocene, ?Entrerriense?, ca. 10 Ma) and up to the mid-Pleistocene (Marine Isotope Stage 11 (MIS), ca. 400ka B.P.). By contrast, it exhibits an excellent and abundant, Late Pleistocene fossil record (MIS9, MIS7 and especially MIS5), along more than 1000 km between Río Negro and southern Santa Cruz provinces (Patagonia). A total of 130 collected bulk samples (complete sedimentary matrix and molluscan content) containing T. atra from more than 30 Pleistocene fossiliferous sites in 9 wider geographical areas (San Antonio Oeste, Puerto Lobos, Bahía Vera, Cabo Raso, Camarones, Bahía Bustamante, Caleta Olivia, Puerto Mazarredo, Puerto Deseado, San Julián) analyzed through multivariate and cladistic techniques confirmed its importance as a biostratigraphical/paleoclimate/palaeoceanographical signal within dominantly cool coastal settings. Additionally, morphometric analyses of Pleistocene (Patagonian) and modern (Pacific, Southeastern Pacific, SEP) specimens and Ancestral Areas analysis showed that after its first appearance in the SEP during the late Pliocene (cooling trend) it dispersed during the late Pleistocene into the SWA by rafting on macroalgae (Durvillaea antarctica) along the Cabo de Hornos and Malvinas (Falkland) currents, becoming extinct in the Mar Argentino (Magellan Malacological province) after the Last Interglacial (MIS5). Its absence today represents a climate change-driven range shift following the amelioration trend after the Last Glacial Maximum (LGM) and an independent evidence for palaeoceanographical changes at the Pleistocene/Holocene transition: changes in sea surface temperature (SST)(ca. 2°C higher), wind velocities (less), light (less), nutrient availability (less), extension and intensity of cold (less) and warm (increased) shallow water currents altering water masses, productivity and biogeographical boundaries. Disadvantageous Holocene scenarios must have caused direct effects on its physiology and survival and prevented the occurrence of D.antarctica and a successful dispersal along the SWA, while its retraction to the cold Humboldt System was impossible (northwards direction of SWA cold currents). Dispersalist models explain the origin of key taxa such as T. atra and taxonomic differences along the SWA and SEP margins of South America with implications for future coastal scenarios. The distribution of T. atra across time reinforces strong linkages between earth history-climatic cycles-atmospheric-oceanic circulation patterns and biotic responses, showing future climate change consequences expected on nearshore communities. Fil: Aguirre, Marina Laura. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina Fil: Richiano, Sebastián Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina Fil: Donato, Mariano Humberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Limnología "Dr. Raúl A. Ringuelet". Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Limnología; Argentina Fil: Farinati, Ester Amanda. Universidad Nacional del Sur; Argentina 4º International Palaeontological Congress Mendoza Argentina Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales International Paleontological Association |
description |
The regional palaeobiogeographical context of Tegula atra (Lesson) revealed that it is a keystone endemic species within the marine Quaternary of Patagonia (Argentina, Southwestern Atlantic, SWA). A detailed systematic review together with field observations showed that it was absent from warmer than present Neogene sea-level episodes (e.g., late Miocene, ?Entrerriense?, ca. 10 Ma) and up to the mid-Pleistocene (Marine Isotope Stage 11 (MIS), ca. 400ka B.P.). By contrast, it exhibits an excellent and abundant, Late Pleistocene fossil record (MIS9, MIS7 and especially MIS5), along more than 1000 km between Río Negro and southern Santa Cruz provinces (Patagonia). A total of 130 collected bulk samples (complete sedimentary matrix and molluscan content) containing T. atra from more than 30 Pleistocene fossiliferous sites in 9 wider geographical areas (San Antonio Oeste, Puerto Lobos, Bahía Vera, Cabo Raso, Camarones, Bahía Bustamante, Caleta Olivia, Puerto Mazarredo, Puerto Deseado, San Julián) analyzed through multivariate and cladistic techniques confirmed its importance as a biostratigraphical/paleoclimate/palaeoceanographical signal within dominantly cool coastal settings. Additionally, morphometric analyses of Pleistocene (Patagonian) and modern (Pacific, Southeastern Pacific, SEP) specimens and Ancestral Areas analysis showed that after its first appearance in the SEP during the late Pliocene (cooling trend) it dispersed during the late Pleistocene into the SWA by rafting on macroalgae (Durvillaea antarctica) along the Cabo de Hornos and Malvinas (Falkland) currents, becoming extinct in the Mar Argentino (Magellan Malacological province) after the Last Interglacial (MIS5). Its absence today represents a climate change-driven range shift following the amelioration trend after the Last Glacial Maximum (LGM) and an independent evidence for palaeoceanographical changes at the Pleistocene/Holocene transition: changes in sea surface temperature (SST)(ca. 2°C higher), wind velocities (less), light (less), nutrient availability (less), extension and intensity of cold (less) and warm (increased) shallow water currents altering water masses, productivity and biogeographical boundaries. Disadvantageous Holocene scenarios must have caused direct effects on its physiology and survival and prevented the occurrence of D.antarctica and a successful dispersal along the SWA, while its retraction to the cold Humboldt System was impossible (northwards direction of SWA cold currents). Dispersalist models explain the origin of key taxa such as T. atra and taxonomic differences along the SWA and SEP margins of South America with implications for future coastal scenarios. The distribution of T. atra across time reinforces strong linkages between earth history-climatic cycles-atmospheric-oceanic circulation patterns and biotic responses, showing future climate change consequences expected on nearshore communities. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/conferenceObject Congreso Book http://purl.org/coar/resource_type/c_5794 info:ar-repo/semantics/documentoDeConferencia |
status_str |
publishedVersion |
format |
conferenceObject |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/237999 Why is Tegula atra (Lesson) (Gastropoda) extinct from Patagonia? Biotic response to late Quaternary climate changes in the Southwestern Atlantic; 4º International Palaeontological Congress; Mendoza; Argentina; 2014; 640-640 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/237999 |
identifier_str_mv |
Why is Tegula atra (Lesson) (Gastropoda) extinct from Patagonia? Biotic response to late Quaternary climate changes in the Southwestern Atlantic; 4º International Palaeontological Congress; Mendoza; Argentina; 2014; 640-640 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf |
dc.coverage.none.fl_str_mv |
Internacional |
dc.publisher.none.fl_str_mv |
Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Museo de Historia Natural de San Rafael |
publisher.none.fl_str_mv |
Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Museo de Historia Natural de San Rafael |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) |
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CONICET Digital (CONICET) |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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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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13.13397 |