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dc.contributor.author Dieguez, Maria del Carmen
dc.contributor.author Soto Cárdenas, Carolina
dc.contributor.author Ribeiro Guevara, Sergio
dc.contributor.author Dipasquale, Mark Marvin
dc.contributor.author Gerea, Marina
dc.contributor.author Arribére, María
dc.contributor.author Queimaliños, Claudia Patricia
dc.date.available 2016-07-29T16:25:30Z
dc.date.issued 2013-07
dc.identifier.citation 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
dc.identifier.issn 2100-014X
dc.identifier.uri http://hdl.handle.net/11336/6808
dc.description.abstract 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.
dc.format application/pdf
dc.language.iso eng
dc.publisher EDP Sciences
dc.rights info:eu-repo/semantics/openAccess
dc.rights.uri https://creativecommons.org/licenses/by/2.5/ar/
dc.subject MERCURY
dc.subject BIOACCUMULATION
dc.subject PLANKTON SIZE FRACTIONS
dc.subject ANDEAN PATAGONIAN LAKES
dc.subject.classification Oceanografía, Hidrología, Recursos Hídricos
dc.subject.classification Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification CIENCIAS NATURALES Y EXACTAS
dc.title Inorganic mercury (Hg2+) uptake by different plankton fractions of Andean Patagonian lakes (Argentina)
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion
dc.date.updated 2016-07-28T18:34:10Z
dc.journal.volume 1
dc.journal.number 4101
dc.journal.pagination 1-4
dc.journal.pais Francia
dc.description.fil 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
dc.description.fil Fil: Soto Cárdenas, Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina
dc.description.fil 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
dc.description.fil Fil: Dipasquale, Mark Marvin. United States Geological Survey; Estados Unidos
dc.description.fil Fil: Gerea, Marina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina
dc.description.fil 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
dc.description.fil Fil: Queimaliños, Claudia Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina
dc.journal.title E3S Web Conferences
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/http://www.e3s-conferences.org/articles/e3sconf/abs/2013/01/e3sconf_ichmet2013_41018/e3sconf_ichmet2013_41018.html
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1051/e3sconf/20130141018
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/10.1051/e3sconf/20130141018
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/https://doaj.org/article/8721b7855e4d4f3c812e4f4df62da9f3


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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution 2.5 Unported (CC BY 2.5)