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dc.contributor.author
Williams Velázquez, Natalia Noemi  
dc.contributor.author
Rizzo, Andrea Paula  
dc.contributor.author
Arribere, Maria Angelica  
dc.contributor.author
Añón Suárez, Diego Alejandro  
dc.contributor.author
Guevara, Sergio Ribeiro  
dc.date.available
2019-01-28T15:25:32Z  
dc.date.issued
2018-01-04  
dc.identifier.citation
Williams Velázquez, Natalia Noemi; Rizzo, Andrea Paula; Arribere, Maria Angelica; Añón Suárez, Diego Alejandro; Guevara, Sergio Ribeiro; Silver bioaccumulation in chironomid larvae as a potential source for upper trophic levels: a study case from northern Patagonia; Springer Heidelberg; Environmental Science and Pollution Research; 25; 2; 4-1-2018; 1921-1932  
dc.identifier.issn
0944-1344  
dc.identifier.uri
http://hdl.handle.net/11336/68717  
dc.description.abstract
Silver (Ag) is a pollutant of high concern in aquatic ecosystems, considered among the most toxic metallic ions. In lacustrine environments, contaminated sediments are a source of Ag for the food web. Chironomidae (Insecta: Diptera) are the most abundant, diverse, and representative insect groups in aquatic ecosystems. Chironomid larvae are closely associated to benthic substrates and link primary producers and secondary consumers. Given their trophic position and their life habits, these larvae can be considered the entry point for the transference of Ag, from the benthic deposit to the higher trophic levels of the food web. Previous studies in lakes from Nahuel Huapi National Park (Northern Patagonia) showed Ag enrichment over background levels (0.04–0.1 μg g−1 dry weight) both in biota (bivalves and fish liver) and sediments from sites near human settlements. The aim of this study was to analyze the role of chironomids in the transference of Ag from the benthic reservoir of Lake Moreno Oeste to the food web. The concentration of Ag in chironomid larvae tissue ranged from 0.1 to 1.5 μg g−1 dry weight, reaching a bioaccumulation factor up to 17 over substrates and depending on the associated substrate type, feeding habitats, larval stage, and season. The main Ag transfer to higher trophic levels by chironomids occurs in the littoral zone, mostly from larvae inhabiting submerged vegetation (Myriophyllum quitense) and sediment from vegetated zones. This study presents novel evidence of the doorway role played by chironomid larvae in Ag pathways from the sediments into food webs of freshwater ecosystems.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Springer Heidelberg  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Benthic Organism  
dc.subject
Bioaccumulation  
dc.subject
Heavy Metal  
dc.subject
Lacustrine Substrates  
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Lake Moreno Oeste  
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North Patagonia  
dc.subject.classification
Meteorología y Ciencias Atmosféricas  
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Ciencias de la Tierra y relacionadas con el Medio Ambiente  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Silver bioaccumulation in chironomid larvae as a potential source for upper trophic levels: a study case from northern Patagonia  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2019-01-14T14:20:00Z  
dc.journal.volume
25  
dc.journal.number
2  
dc.journal.pagination
1921-1932  
dc.journal.pais
Alemania  
dc.journal.ciudad
Heidelberg  
dc.description.fil
Fil: Williams Velázquez, Natalia Noemi. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Unidad de Actividad de Ingeniería Nuclear. Laboratorio de Análisis por Activación Neutróica; Argentina  
dc.description.fil
Fil: Rizzo, Andrea Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Unidad de Actividad de Ingeniería Nuclear. Laboratorio de Análisis por Activación Neutróica; Argentina  
dc.description.fil
Fil: Arribere, Maria Angelica. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Unidad de Actividad de Ingeniería Nuclear. Laboratorio de Análisis por Activación Neutróica; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Universidad Nacional de Cuyo; Argentina  
dc.description.fil
Fil: Añón Suárez, Diego Alejandro. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche. Laboratorio de Fotobiología; Argentina  
dc.description.fil
Fil: Guevara, Sergio Ribeiro. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Unidad de Actividad de Ingeniería Nuclear. Laboratorio de Análisis por Activación Neutróica; Argentina  
dc.journal.title
Environmental Science and Pollution Research  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://link.springer.com/10.1007/s11356-017-0656-0  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s11356-017-0656-0