Distribution of dinoflagellate cysts and other aquatic palynomorphs in surface sediments from the Beagle Channel, Southern Argentina

Autores
Candel, Maria Soledad; Radi, Taoufik; de Vernal, Anne; Bujalesky, Gustavo Gabriel
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Palynological analyses of 22 surface sediment samples from the Beagle Channel, Tierra del Fuego, Argentina, were performed in order to investigate the distribution of dinocyst assemblages and other aquatic palynomorphs and to explore their relationships with sea-surface conditions, which are regionally characterized by cold and low salinity conditions (4-9. °C and 27-33.5, respectively). Results show relatively low dinocyst concentrations (253 to 5568. cysts/g) and species diversity (19 taxa identified). The assemblages are mostly composed of Protoperidiniaceae and appear typical of a marginal marine environment with surface waters characterized by low to moderate salinity and high nutrient content due to river inputs. The assemblages are thus compatible with the occurrence of freshwater to brackish water taxa Botryococcus braunii, Botryococcus sp., Polyasterias sp., Halodinium sp., and Radiosperma corbiferum. The dinocyst assemblages are dominated by Brigantedinium spp., Echinidinium spp. and Selenopemphix quanta accompanied by cysts of Pentapharsodinium dalei, Islandinium minutum, Votadinium spinosum, Polykrikos kofoidii and Polykrikos schwartzii. The assemblages from the Beagle Channel show similarities with those of high latitude regions of the Northern Hemisphere. However, some taxa, which were exclusively reported from relatively warm environments in the Northern Hemisphere, occur in relatively high percentages in the Beagle Channel (e.g. Echinidinium delicatum and Votadinium spinosum). The absence of Selenopemphix antarctica in the Beagle Channel is consistent with its known ecological affinities, since it characterizes environments marked by seasonal sea-ice cover.
Fil: Candel, Maria Soledad. 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: Radi, Taoufik. Université du Québec a Montreal; Canadá. McGill University; Canadá
Fil: de Vernal, Anne. Université du Québec a Montreal; Canadá
Fil: Bujalesky, Gustavo Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Materia
Aquatic Palynomorphs
Argentina
Beagle Channel
Dinocyst Assemblages
Distribution
South America
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:11336/57704
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/57704
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Distribution of dinoflagellate cysts and other aquatic palynomorphs in surface sediments from the Beagle Channel, Southern ArgentinaCandel, Maria SoledadRadi, Taoufikde Vernal, AnneBujalesky, Gustavo GabrielAquatic PalynomorphsArgentinaBeagle ChannelDinocyst AssemblagesDistributionSouth Americahttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Palynological analyses of 22 surface sediment samples from the Beagle Channel, Tierra del Fuego, Argentina, were performed in order to investigate the distribution of dinocyst assemblages and other aquatic palynomorphs and to explore their relationships with sea-surface conditions, which are regionally characterized by cold and low salinity conditions (4-9. °C and 27-33.5, respectively). Results show relatively low dinocyst concentrations (253 to 5568. cysts/g) and species diversity (19 taxa identified). The assemblages are mostly composed of Protoperidiniaceae and appear typical of a marginal marine environment with surface waters characterized by low to moderate salinity and high nutrient content due to river inputs. The assemblages are thus compatible with the occurrence of freshwater to brackish water taxa Botryococcus braunii, Botryococcus sp., Polyasterias sp., Halodinium sp., and Radiosperma corbiferum. The dinocyst assemblages are dominated by Brigantedinium spp., Echinidinium spp. and Selenopemphix quanta accompanied by cysts of Pentapharsodinium dalei, Islandinium minutum, Votadinium spinosum, Polykrikos kofoidii and Polykrikos schwartzii. The assemblages from the Beagle Channel show similarities with those of high latitude regions of the Northern Hemisphere. However, some taxa, which were exclusively reported from relatively warm environments in the Northern Hemisphere, occur in relatively high percentages in the Beagle Channel (e.g. Echinidinium delicatum and Votadinium spinosum). The absence of Selenopemphix antarctica in the Beagle Channel is consistent with its known ecological affinities, since it characterizes environments marked by seasonal sea-ice cover.Fil: Candel, Maria Soledad. 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: Radi, Taoufik. Université du Québec a Montreal; Canadá. McGill University; CanadáFil: de Vernal, Anne. Université du Québec a Montreal; CanadáFil: Bujalesky, Gustavo Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaElsevier Science2012-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/57704Candel, Maria Soledad; Radi, Taoufik; de Vernal, Anne; Bujalesky, Gustavo Gabriel; Distribution of dinoflagellate cysts and other aquatic palynomorphs in surface sediments from the Beagle Channel, Southern Argentina; Elsevier Science; Marine Micropaleontology; 96-97; 12-2012; 1-120377-8398CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0377839812000631info:eu-repo/semantics/altIdentifier/doi/10.1016/j.marmicro.2012.06.009info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:13:38Zoai:ri.conicet.gov.ar:11336/57704instacron: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:34982025-10-22 12:13:39.266CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Distribution of dinoflagellate cysts and other aquatic palynomorphs in surface sediments from the Beagle Channel, Southern Argentina
title Distribution of dinoflagellate cysts and other aquatic palynomorphs in surface sediments from the Beagle Channel, Southern Argentina
spellingShingle Distribution of dinoflagellate cysts and other aquatic palynomorphs in surface sediments from the Beagle Channel, Southern Argentina
Candel, Maria Soledad
Aquatic Palynomorphs
Argentina
Beagle Channel
Dinocyst Assemblages
Distribution
South America
title_short Distribution of dinoflagellate cysts and other aquatic palynomorphs in surface sediments from the Beagle Channel, Southern Argentina
title_full Distribution of dinoflagellate cysts and other aquatic palynomorphs in surface sediments from the Beagle Channel, Southern Argentina
title_fullStr Distribution of dinoflagellate cysts and other aquatic palynomorphs in surface sediments from the Beagle Channel, Southern Argentina
title_full_unstemmed Distribution of dinoflagellate cysts and other aquatic palynomorphs in surface sediments from the Beagle Channel, Southern Argentina
title_sort Distribution of dinoflagellate cysts and other aquatic palynomorphs in surface sediments from the Beagle Channel, Southern Argentina
dc.creator.none.fl_str_mv Candel, Maria Soledad
Radi, Taoufik
de Vernal, Anne
Bujalesky, Gustavo Gabriel
author Candel, Maria Soledad
author_facet Candel, Maria Soledad
Radi, Taoufik
de Vernal, Anne
Bujalesky, Gustavo Gabriel
author_role author
author2 Radi, Taoufik
de Vernal, Anne
Bujalesky, Gustavo Gabriel
author2_role author
author
author
dc.subject.none.fl_str_mv Aquatic Palynomorphs
Argentina
Beagle Channel
Dinocyst Assemblages
Distribution
South America
topic Aquatic Palynomorphs
Argentina
Beagle Channel
Dinocyst Assemblages
Distribution
South America
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Palynological analyses of 22 surface sediment samples from the Beagle Channel, Tierra del Fuego, Argentina, were performed in order to investigate the distribution of dinocyst assemblages and other aquatic palynomorphs and to explore their relationships with sea-surface conditions, which are regionally characterized by cold and low salinity conditions (4-9. °C and 27-33.5, respectively). Results show relatively low dinocyst concentrations (253 to 5568. cysts/g) and species diversity (19 taxa identified). The assemblages are mostly composed of Protoperidiniaceae and appear typical of a marginal marine environment with surface waters characterized by low to moderate salinity and high nutrient content due to river inputs. The assemblages are thus compatible with the occurrence of freshwater to brackish water taxa Botryococcus braunii, Botryococcus sp., Polyasterias sp., Halodinium sp., and Radiosperma corbiferum. The dinocyst assemblages are dominated by Brigantedinium spp., Echinidinium spp. and Selenopemphix quanta accompanied by cysts of Pentapharsodinium dalei, Islandinium minutum, Votadinium spinosum, Polykrikos kofoidii and Polykrikos schwartzii. The assemblages from the Beagle Channel show similarities with those of high latitude regions of the Northern Hemisphere. However, some taxa, which were exclusively reported from relatively warm environments in the Northern Hemisphere, occur in relatively high percentages in the Beagle Channel (e.g. Echinidinium delicatum and Votadinium spinosum). The absence of Selenopemphix antarctica in the Beagle Channel is consistent with its known ecological affinities, since it characterizes environments marked by seasonal sea-ice cover.
Fil: Candel, Maria Soledad. 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: Radi, Taoufik. Université du Québec a Montreal; Canadá. McGill University; Canadá
Fil: de Vernal, Anne. Université du Québec a Montreal; Canadá
Fil: Bujalesky, Gustavo Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
description Palynological analyses of 22 surface sediment samples from the Beagle Channel, Tierra del Fuego, Argentina, were performed in order to investigate the distribution of dinocyst assemblages and other aquatic palynomorphs and to explore their relationships with sea-surface conditions, which are regionally characterized by cold and low salinity conditions (4-9. °C and 27-33.5, respectively). Results show relatively low dinocyst concentrations (253 to 5568. cysts/g) and species diversity (19 taxa identified). The assemblages are mostly composed of Protoperidiniaceae and appear typical of a marginal marine environment with surface waters characterized by low to moderate salinity and high nutrient content due to river inputs. The assemblages are thus compatible with the occurrence of freshwater to brackish water taxa Botryococcus braunii, Botryococcus sp., Polyasterias sp., Halodinium sp., and Radiosperma corbiferum. The dinocyst assemblages are dominated by Brigantedinium spp., Echinidinium spp. and Selenopemphix quanta accompanied by cysts of Pentapharsodinium dalei, Islandinium minutum, Votadinium spinosum, Polykrikos kofoidii and Polykrikos schwartzii. The assemblages from the Beagle Channel show similarities with those of high latitude regions of the Northern Hemisphere. However, some taxa, which were exclusively reported from relatively warm environments in the Northern Hemisphere, occur in relatively high percentages in the Beagle Channel (e.g. Echinidinium delicatum and Votadinium spinosum). The absence of Selenopemphix antarctica in the Beagle Channel is consistent with its known ecological affinities, since it characterizes environments marked by seasonal sea-ice cover.
publishDate 2012
dc.date.none.fl_str_mv 2012-12
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/11336/57704
Candel, Maria Soledad; Radi, Taoufik; de Vernal, Anne; Bujalesky, Gustavo Gabriel; Distribution of dinoflagellate cysts and other aquatic palynomorphs in surface sediments from the Beagle Channel, Southern Argentina; Elsevier Science; Marine Micropaleontology; 96-97; 12-2012; 1-12
0377-8398
CONICET Digital
CONICET
url http://hdl.handle.net/11336/57704
identifier_str_mv Candel, Maria Soledad; Radi, Taoufik; de Vernal, Anne; Bujalesky, Gustavo Gabriel; Distribution of dinoflagellate cysts and other aquatic palynomorphs in surface sediments from the Beagle Channel, Southern Argentina; Elsevier Science; Marine Micropaleontology; 96-97; 12-2012; 1-12
0377-8398
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://www.sciencedirect.com/science/article/pii/S0377839812000631
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.marmicro.2012.06.009
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
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 12.982451

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