Holocene changes in trophic states of shallow lakes from the Pampa plain of Argentina

Autores
Stutz, Silvina Maria; Borel, Claudia Marcela; Fontana, Sonia Leonor; Tonello, Marcela Sandra
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Changes in trophic status of shallow lakes from the southeastern Pampa plain of Argentina are evaluated based on the relative presence of submerged macrophytes and phytoplankton. The evolution of lake Lonkoy is reconstructed for the last 5000 years, using pollen, non-pollen palynomorphs (NPPs)and macrofossil remain analyses, revealing three main lake stages. A macrophyte-dominated clear lake prevailed until 670 cal yr BP. Afterwards, the lake changed to a turbid phytoplankton-dominated state. Recently, the lake has turned to a turbid phase, caused by resuspended sediment. These results are compared with two other paleolimnological records from the region, lakes Hinojales and Nahuel Rucá, revealing a similar late-Holocene evolution, with a shift from a macrophyte- to phytoplankton-dominated lake, occurring at broadly the same time. The shift of states may be attributed to a shift in climate after 1000 cal. yr BP towards wetter conditions during the Medieval Climate Anomaly.
Fil: Stutz, Silvina Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Borel, Claudia Marcela. 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
Fil: Fontana, Sonia Leonor. Universität Göttingen; Alemania. Queens University; Canadá
Fil: Tonello, Marcela Sandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Materia
PALEOLIMNOLOGY
PAMPA PLAIN
SHALLOW LAKES
ALTERNATIVE STABLE STATES
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/272626
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Holocene changes in trophic states of shallow lakes from the Pampa plain of ArgentinaStutz, Silvina MariaBorel, Claudia MarcelaFontana, Sonia LeonorTonello, Marcela SandraPALEOLIMNOLOGYPAMPA PLAINSHALLOW LAKESALTERNATIVE STABLE STATEShttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Changes in trophic status of shallow lakes from the southeastern Pampa plain of Argentina are evaluated based on the relative presence of submerged macrophytes and phytoplankton. The evolution of lake Lonkoy is reconstructed for the last 5000 years, using pollen, non-pollen palynomorphs (NPPs)and macrofossil remain analyses, revealing three main lake stages. A macrophyte-dominated clear lake prevailed until 670 cal yr BP. Afterwards, the lake changed to a turbid phytoplankton-dominated state. Recently, the lake has turned to a turbid phase, caused by resuspended sediment. These results are compared with two other paleolimnological records from the region, lakes Hinojales and Nahuel Rucá, revealing a similar late-Holocene evolution, with a shift from a macrophyte- to phytoplankton-dominated lake, occurring at broadly the same time. The shift of states may be attributed to a shift in climate after 1000 cal. yr BP towards wetter conditions during the Medieval Climate Anomaly.Fil: Stutz, Silvina Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaFil: Borel, Claudia Marcela. 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; ArgentinaFil: Fontana, Sonia Leonor. Universität Göttingen; Alemania. Queens University; CanadáFil: Tonello, Marcela Sandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaSage Publications Ltd2012-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/272626Stutz, Silvina Maria; Borel, Claudia Marcela; Fontana, Sonia Leonor; Tonello, Marcela Sandra; Holocene changes in trophic states of shallow lakes from the Pampa plain of Argentina; Sage Publications Ltd; Holocene (Seven Oaks); 22; 11; 6-2012; 1263-12700959-6836CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://hol.sagepub.com/content/early/2012/06/13/0959683612446667.full.pdf+htmlinfo:eu-repo/semantics/altIdentifier/doi/10.1177/0959683612446667info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:17:30Zoai:ri.conicet.gov.ar:11336/272626instacron: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:34982025-10-15 15:17:30.336CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Holocene changes in trophic states of shallow lakes from the Pampa plain of Argentina
title Holocene changes in trophic states of shallow lakes from the Pampa plain of Argentina
spellingShingle Holocene changes in trophic states of shallow lakes from the Pampa plain of Argentina
Stutz, Silvina Maria
PALEOLIMNOLOGY
PAMPA PLAIN
SHALLOW LAKES
ALTERNATIVE STABLE STATES
title_short Holocene changes in trophic states of shallow lakes from the Pampa plain of Argentina
title_full Holocene changes in trophic states of shallow lakes from the Pampa plain of Argentina
title_fullStr Holocene changes in trophic states of shallow lakes from the Pampa plain of Argentina
title_full_unstemmed Holocene changes in trophic states of shallow lakes from the Pampa plain of Argentina
title_sort Holocene changes in trophic states of shallow lakes from the Pampa plain of Argentina
dc.creator.none.fl_str_mv Stutz, Silvina Maria
Borel, Claudia Marcela
Fontana, Sonia Leonor
Tonello, Marcela Sandra
author Stutz, Silvina Maria
author_facet Stutz, Silvina Maria
Borel, Claudia Marcela
Fontana, Sonia Leonor
Tonello, Marcela Sandra
author_role author
author2 Borel, Claudia Marcela
Fontana, Sonia Leonor
Tonello, Marcela Sandra
author2_role author
author
author
dc.subject.none.fl_str_mv PALEOLIMNOLOGY
PAMPA PLAIN
SHALLOW LAKES
ALTERNATIVE STABLE STATES
topic PALEOLIMNOLOGY
PAMPA PLAIN
SHALLOW LAKES
ALTERNATIVE STABLE STATES
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Changes in trophic status of shallow lakes from the southeastern Pampa plain of Argentina are evaluated based on the relative presence of submerged macrophytes and phytoplankton. The evolution of lake Lonkoy is reconstructed for the last 5000 years, using pollen, non-pollen palynomorphs (NPPs)and macrofossil remain analyses, revealing three main lake stages. A macrophyte-dominated clear lake prevailed until 670 cal yr BP. Afterwards, the lake changed to a turbid phytoplankton-dominated state. Recently, the lake has turned to a turbid phase, caused by resuspended sediment. These results are compared with two other paleolimnological records from the region, lakes Hinojales and Nahuel Rucá, revealing a similar late-Holocene evolution, with a shift from a macrophyte- to phytoplankton-dominated lake, occurring at broadly the same time. The shift of states may be attributed to a shift in climate after 1000 cal. yr BP towards wetter conditions during the Medieval Climate Anomaly.
Fil: Stutz, Silvina Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Borel, Claudia Marcela. 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
Fil: Fontana, Sonia Leonor. Universität Göttingen; Alemania. Queens University; Canadá
Fil: Tonello, Marcela Sandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
description Changes in trophic status of shallow lakes from the southeastern Pampa plain of Argentina are evaluated based on the relative presence of submerged macrophytes and phytoplankton. The evolution of lake Lonkoy is reconstructed for the last 5000 years, using pollen, non-pollen palynomorphs (NPPs)and macrofossil remain analyses, revealing three main lake stages. A macrophyte-dominated clear lake prevailed until 670 cal yr BP. Afterwards, the lake changed to a turbid phytoplankton-dominated state. Recently, the lake has turned to a turbid phase, caused by resuspended sediment. These results are compared with two other paleolimnological records from the region, lakes Hinojales and Nahuel Rucá, revealing a similar late-Holocene evolution, with a shift from a macrophyte- to phytoplankton-dominated lake, occurring at broadly the same time. The shift of states may be attributed to a shift in climate after 1000 cal. yr BP towards wetter conditions during the Medieval Climate Anomaly.
publishDate 2012
dc.date.none.fl_str_mv 2012-06
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/11336/272626
Stutz, Silvina Maria; Borel, Claudia Marcela; Fontana, Sonia Leonor; Tonello, Marcela Sandra; Holocene changes in trophic states of shallow lakes from the Pampa plain of Argentina; Sage Publications Ltd; Holocene (Seven Oaks); 22; 11; 6-2012; 1263-1270
0959-6836
CONICET Digital
CONICET
url http://hdl.handle.net/11336/272626
identifier_str_mv Stutz, Silvina Maria; Borel, Claudia Marcela; Fontana, Sonia Leonor; Tonello, Marcela Sandra; Holocene changes in trophic states of shallow lakes from the Pampa plain of Argentina; Sage Publications Ltd; Holocene (Seven Oaks); 22; 11; 6-2012; 1263-1270
0959-6836
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://hol.sagepub.com/content/early/2012/06/13/0959683612446667.full.pdf+html
info:eu-repo/semantics/altIdentifier/doi/10.1177/0959683612446667
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
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Sage Publications Ltd
publisher.none.fl_str_mv Sage Publications Ltd
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 13.22299

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