Inorganic mercury (Hg2+) uptake by different plankton fractions of Andean Patagonian lakes (Argentina)

Autores
Dieguez, Maria del Carmen; Soto Cárdenas, Carolina; Ribeiro Guevara, Sergio; Dipasquale, Mark Marvin; Gerea, Marina; Arribére, María; Queimaliños, Claudia Patricia
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The species composition and the size structure of natural planktonic food webs may provide essential information to understand the fate of mercury and, in particular, the bioaccumulation pattern of Hg2+ in the water column of lake ecosystems. Heterotrophic and autotrophic picoplankton and phytoplankton are the most important entry points for Hg in aquatic ecosystems since they concentrate Hg2+ and MeHg from ambient water, making them available to planktonic consumers at higher trophic levels of lake food webs. In this investigation we studied theuptake of 197Hg2+ in natural plankton assemblages from four Andean lakes (Nahuel Huapi National Park, Patagonia, Argentina), comprised in the size fractions 0.2-2.7 µm (picoplankton), 0.2-20 µm (pico and nanoplankton) and 20-50 µm microplankton) through experiments using Hg2+ labeled with 197Hg2+. The experimental results showed that the uptake of Hg2+ was highest in the smallest plankton fractions (0.2-2.7 µm and 0.2-20 µm) compared to the larger fraction comprising microplankton (20-50 um). This pattern was consistent in all lakes, reinforcing the idea that among pelagic organisms, heterotrophic and autotrophic bacteria with the contribution of nanoflagellates and dinoflagellates constitute the main entry point of Hg2+ to the pelagic food web. Moreover, a significant direct relationship was found between the Hg2+ uptake and surface index of the planktonic fractions (SIf). Thus, the smaller planktonic fractions which bore the higher SI were the major contributors to the Hg2+ passing from the abiotic to the biotic pelagic compartments of these Andean lakes.
Fil: Dieguez, Maria del Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina
Fil: Soto Cárdenas, Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina
Fil: Ribeiro Guevara, Sergio. Comision Nacional de Energia Atomica. Gerencia D/area de Energia Nuclear. Unidad de Actividad de Ingenieria Nuclear. Laboratorio de Analisis Por Activacion Neutronica; Argentina
Fil: Dipasquale, Mark Marvin. United States Geological Survey; Estados Unidos
Fil: Gerea, Marina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina
Fil: Arribére, María. Comision Nacional de Energia Atomica. Gerencia D/area de Energia Nuclear. Unidad de Actividad de Ingenieria Nuclear. Laboratorio de Analisis Por Activacion Neutronica; Argentina
Fil: Queimaliños, Claudia Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina
Materia
MERCURY
BIOACCUMULATION
PLANKTON SIZE FRACTIONS
ANDEAN PATAGONIAN LAKES
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/6808
Acceder
id CONICETDig_8ebc7e50e44dc22a7cbf28d03712e18d
oai_identifier_str oai:ri.conicet.gov.ar:11336/6808
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Inorganic mercury (Hg2+) uptake by different plankton fractions of Andean Patagonian lakes (Argentina)Dieguez, Maria del CarmenSoto Cárdenas, CarolinaRibeiro Guevara, SergioDipasquale, Mark MarvinGerea, MarinaArribére, MaríaQueimaliños, Claudia PatriciaMERCURYBIOACCUMULATIONPLANKTON SIZE FRACTIONSANDEAN PATAGONIAN LAKEShttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The species composition and the size structure of natural planktonic food webs may provide essential information to understand the fate of mercury and, in particular, the bioaccumulation pattern of Hg2+ in the water column of lake ecosystems. Heterotrophic and autotrophic picoplankton and phytoplankton are the most important entry points for Hg in aquatic ecosystems since they concentrate Hg2+ and MeHg from ambient water, making them available to planktonic consumers at higher trophic levels of lake food webs. In this investigation we studied theuptake of 197Hg2+ in natural plankton assemblages from four Andean lakes (Nahuel Huapi National Park, Patagonia, Argentina), comprised in the size fractions 0.2-2.7 µm (picoplankton), 0.2-20 µm (pico and nanoplankton) and 20-50 µm microplankton) through experiments using Hg2+ labeled with 197Hg2+. The experimental results showed that the uptake of Hg2+ was highest in the smallest plankton fractions (0.2-2.7 µm and 0.2-20 µm) compared to the larger fraction comprising microplankton (20-50 um). This pattern was consistent in all lakes, reinforcing the idea that among pelagic organisms, heterotrophic and autotrophic bacteria with the contribution of nanoflagellates and dinoflagellates constitute the main entry point of Hg2+ to the pelagic food web. Moreover, a significant direct relationship was found between the Hg2+ uptake and surface index of the planktonic fractions (SIf). Thus, the smaller planktonic fractions which bore the higher SI were the major contributors to the Hg2+ passing from the abiotic to the biotic pelagic compartments of these Andean lakes.Fil: Dieguez, Maria del Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; ArgentinaFil: Soto Cárdenas, Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; ArgentinaFil: Ribeiro Guevara, Sergio. Comision Nacional de Energia Atomica. Gerencia D/area de Energia Nuclear. Unidad de Actividad de Ingenieria Nuclear. Laboratorio de Analisis Por Activacion Neutronica; ArgentinaFil: Dipasquale, Mark Marvin. United States Geological Survey; Estados UnidosFil: Gerea, Marina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; ArgentinaFil: Arribére, María. Comision Nacional de Energia Atomica. Gerencia D/area de Energia Nuclear. Unidad de Actividad de Ingenieria Nuclear. Laboratorio de Analisis Por Activacion Neutronica; ArgentinaFil: Queimaliños, Claudia Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; ArgentinaEDP Sciences2013-07info: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/11336/6808Dieguez, Maria del Carmen; Soto Cárdenas, Carolina; Ribeiro Guevara, Sergio; Dipasquale, Mark Marvin; Gerea, Marina; et al.; Inorganic mercury (Hg2+) uptake by different plankton fractions of Andean Patagonian lakes (Argentina); EDP Sciences; E3S Web Conferences; 1; 4101; 7-2013; 1-42100-014Xenginfo:eu-repo/semantics/altIdentifier/url/http://www.e3s-conferences.org/articles/e3sconf/abs/2013/01/e3sconf_ichmet2013_41018/e3sconf_ichmet2013_41018.htmlinfo:eu-repo/semantics/altIdentifier/doi/10.1051/e3sconf/20130141018info:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/altIdentifier/url/https://doaj.org/article/8721b7855e4d4f3c812e4f4df62da9f3info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:12:33Zoai:ri.conicet.gov.ar:11336/6808instacron: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:34982025-09-10 13:12:34.197CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Inorganic mercury (Hg2+) uptake by different plankton fractions of Andean Patagonian lakes (Argentina)
title Inorganic mercury (Hg2+) uptake by different plankton fractions of Andean Patagonian lakes (Argentina)
spellingShingle Inorganic mercury (Hg2+) uptake by different plankton fractions of Andean Patagonian lakes (Argentina)
Dieguez, Maria del Carmen
MERCURY
BIOACCUMULATION
PLANKTON SIZE FRACTIONS
ANDEAN PATAGONIAN LAKES
title_short Inorganic mercury (Hg2+) uptake by different plankton fractions of Andean Patagonian lakes (Argentina)
title_full Inorganic mercury (Hg2+) uptake by different plankton fractions of Andean Patagonian lakes (Argentina)
title_fullStr Inorganic mercury (Hg2+) uptake by different plankton fractions of Andean Patagonian lakes (Argentina)
title_full_unstemmed Inorganic mercury (Hg2+) uptake by different plankton fractions of Andean Patagonian lakes (Argentina)
title_sort Inorganic mercury (Hg2+) uptake by different plankton fractions of Andean Patagonian lakes (Argentina)
dc.creator.none.fl_str_mv Dieguez, Maria del Carmen
Soto Cárdenas, Carolina
Ribeiro Guevara, Sergio
Dipasquale, Mark Marvin
Gerea, Marina
Arribére, María
Queimaliños, Claudia Patricia
author Dieguez, Maria del Carmen
author_facet Dieguez, Maria del Carmen
Soto Cárdenas, Carolina
Ribeiro Guevara, Sergio
Dipasquale, Mark Marvin
Gerea, Marina
Arribére, María
Queimaliños, Claudia Patricia
author_role author
author2 Soto Cárdenas, Carolina
Ribeiro Guevara, Sergio
Dipasquale, Mark Marvin
Gerea, Marina
Arribére, María
Queimaliños, Claudia Patricia
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv MERCURY
BIOACCUMULATION
PLANKTON SIZE FRACTIONS
ANDEAN PATAGONIAN LAKES
topic MERCURY
BIOACCUMULATION
PLANKTON SIZE FRACTIONS
ANDEAN PATAGONIAN LAKES
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 species composition and the size structure of natural planktonic food webs may provide essential information to understand the fate of mercury and, in particular, the bioaccumulation pattern of Hg2+ in the water column of lake ecosystems. Heterotrophic and autotrophic picoplankton and phytoplankton are the most important entry points for Hg in aquatic ecosystems since they concentrate Hg2+ and MeHg from ambient water, making them available to planktonic consumers at higher trophic levels of lake food webs. In this investigation we studied theuptake of 197Hg2+ in natural plankton assemblages from four Andean lakes (Nahuel Huapi National Park, Patagonia, Argentina), comprised in the size fractions 0.2-2.7 µm (picoplankton), 0.2-20 µm (pico and nanoplankton) and 20-50 µm microplankton) through experiments using Hg2+ labeled with 197Hg2+. The experimental results showed that the uptake of Hg2+ was highest in the smallest plankton fractions (0.2-2.7 µm and 0.2-20 µm) compared to the larger fraction comprising microplankton (20-50 um). This pattern was consistent in all lakes, reinforcing the idea that among pelagic organisms, heterotrophic and autotrophic bacteria with the contribution of nanoflagellates and dinoflagellates constitute the main entry point of Hg2+ to the pelagic food web. Moreover, a significant direct relationship was found between the Hg2+ uptake and surface index of the planktonic fractions (SIf). Thus, the smaller planktonic fractions which bore the higher SI were the major contributors to the Hg2+ passing from the abiotic to the biotic pelagic compartments of these Andean lakes.
Fil: Dieguez, Maria del Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina
Fil: Soto Cárdenas, Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina
Fil: Ribeiro Guevara, Sergio. Comision Nacional de Energia Atomica. Gerencia D/area de Energia Nuclear. Unidad de Actividad de Ingenieria Nuclear. Laboratorio de Analisis Por Activacion Neutronica; Argentina
Fil: Dipasquale, Mark Marvin. United States Geological Survey; Estados Unidos
Fil: Gerea, Marina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina
Fil: Arribére, María. Comision Nacional de Energia Atomica. Gerencia D/area de Energia Nuclear. Unidad de Actividad de Ingenieria Nuclear. Laboratorio de Analisis Por Activacion Neutronica; Argentina
Fil: Queimaliños, Claudia Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina
description The species composition and the size structure of natural planktonic food webs may provide essential information to understand the fate of mercury and, in particular, the bioaccumulation pattern of Hg2+ in the water column of lake ecosystems. Heterotrophic and autotrophic picoplankton and phytoplankton are the most important entry points for Hg in aquatic ecosystems since they concentrate Hg2+ and MeHg from ambient water, making them available to planktonic consumers at higher trophic levels of lake food webs. In this investigation we studied theuptake of 197Hg2+ in natural plankton assemblages from four Andean lakes (Nahuel Huapi National Park, Patagonia, Argentina), comprised in the size fractions 0.2-2.7 µm (picoplankton), 0.2-20 µm (pico and nanoplankton) and 20-50 µm microplankton) through experiments using Hg2+ labeled with 197Hg2+. The experimental results showed that the uptake of Hg2+ was highest in the smallest plankton fractions (0.2-2.7 µm and 0.2-20 µm) compared to the larger fraction comprising microplankton (20-50 um). This pattern was consistent in all lakes, reinforcing the idea that among pelagic organisms, heterotrophic and autotrophic bacteria with the contribution of nanoflagellates and dinoflagellates constitute the main entry point of Hg2+ to the pelagic food web. Moreover, a significant direct relationship was found between the Hg2+ uptake and surface index of the planktonic fractions (SIf). Thus, the smaller planktonic fractions which bore the higher SI were the major contributors to the Hg2+ passing from the abiotic to the biotic pelagic compartments of these Andean lakes.
publishDate 2013
dc.date.none.fl_str_mv 2013-07
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/11336/6808
Dieguez, Maria del Carmen; Soto Cárdenas, Carolina; Ribeiro Guevara, Sergio; Dipasquale, Mark Marvin; Gerea, Marina; et al.; Inorganic mercury (Hg2+) uptake by different plankton fractions of Andean Patagonian lakes (Argentina); EDP Sciences; E3S Web Conferences; 1; 4101; 7-2013; 1-4
2100-014X
url http://hdl.handle.net/11336/6808
identifier_str_mv Dieguez, Maria del Carmen; Soto Cárdenas, Carolina; Ribeiro Guevara, Sergio; Dipasquale, Mark Marvin; Gerea, Marina; et al.; Inorganic mercury (Hg2+) uptake by different plankton fractions of Andean Patagonian lakes (Argentina); EDP Sciences; E3S Web Conferences; 1; 4101; 7-2013; 1-4
2100-014X
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.e3s-conferences.org/articles/e3sconf/abs/2013/01/e3sconf_ichmet2013_41018/e3sconf_ichmet2013_41018.html
info:eu-repo/semantics/altIdentifier/doi/10.1051/e3sconf/20130141018
info:eu-repo/semantics/altIdentifier/doi/
info:eu-repo/semantics/altIdentifier/url/https://doaj.org/article/8721b7855e4d4f3c812e4f4df62da9f3
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
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
_version_ 1842980656286531584
score 12.993085

Publicaciones similares