Patterns of dissolved organic matter across the Patagonian landscape: A broad-scale survey of Chilean and Argentine lakes
Dissolved organic matter (DOM) is a complex mixture of carbon compounds from autochthonous and allochthonous sources. Dissolved organic carbon (DOC) concentrations and optical metrics of DOM provide clues as to the sources and processes affecting the DOM pool. Herein we provide the first broad-scale...
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ftconicet:oai:ri.conicet.gov.ar:11336/51483 2023-10-09T21:46:55+02:00 Patterns of dissolved organic matter across the Patagonian landscape: A broad-scale survey of Chilean and Argentine lakes Zagarese, Horacio Ernesto Ferraro, Marcela Andrea Queimaliños, Claudia Patricia Dieguez, Maria del Carmen Añón Suárez, Diego Alejandro Llames, Maria Eugenia del Rosario application/pdf http://hdl.handle.net/11336/51483 eng eng Csiro Publishing info:eu-repo/semantics/altIdentifier/url/http://www.publish.csiro.au/mf/MF17023 info:eu-repo/semantics/altIdentifier/doi/10.1071/MF17023 http://hdl.handle.net/11336/51483 Zagarese, Horacio Ernesto; Ferraro, Marcela Andrea; Queimaliños, Claudia Patricia; Dieguez, Maria del Carmen; Añón Suárez, Diego Alejandro; et al.; Patterns of dissolved organic matter across the Patagonian landscape: A broad-scale survey of Chilean and Argentine lakes; Csiro Publishing; Marine and Freshwater Research; 68; 12; 7-8-2017; 2355-2365 1323-1650 CONICET Digital CONICET info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ CLIMATE CHANGE ECOSYSTEM PROCESSES LIMNOLOGY https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1071/MF17023 2023-09-24T18:50:49Z Dissolved organic matter (DOM) is a complex mixture of carbon compounds from autochthonous and allochthonous sources. Dissolved organic carbon (DOC) concentrations and optical metrics of DOM provide clues as to the sources and processes affecting the DOM pool. Herein we provide the first broad-scale characterisation of DOM from Patagonian lakes across a strong west-east precipitation gradient. Fifty-eight lakes from Northern Patagonia (Argentina and Chile) plus six lakes from the Antarctic Peninsula were sampled during summer 2000-01. Six DOM metrics were evaluated: DOC absorbance at 254nm (a254) and 350nm (a350), DOC-specific absorbance at 254nm (a254/DOC) and 350nm (a350/DOC) and spectral slope between 275 and 295nm (S275-295). The DOM of Chilean maritime lakes and shallow (<15m) Andean lakes exhibited terrestrial signatures and a pattern of variation consistent with their occurrence across the longitudinal precipitation gradient (i.e. S275-295 increased, whereas a350/DOC decreased from west to east). The contribution of allochthonous DOM was smaller in deep (>15m) Andean lakes, which is consistent with their longer water retention time. Steppe lakes, mostly from endorheic basins, made up the most heterogeneous group with regard to DOM characteristics. Fil: Zagarese, Horacio Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Biotecnológicas. Instituto de Investigaciones Biotecnológicas "Dr. Raúl Alfonsín" (sede Chascomús). Universidad Nacional de San Martín. Instituto de Investigaciones Biotecnológicas. Instituto de Investigaciones Biotecnológicas "Dr. Raúl Alfonsín" (sede Chascomús); Argentina Fil: Ferraro, Marcela Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Biotecnológicas. Instituto de Investigaciones Biotecnológicas "Dr. Raúl Alfonsín" (sede Chascomús). Universidad Nacional de San Martín. Instituto ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Antarctic The Antarctic Antarctic Peninsula Patagonia Argentina Argentine San Martín ENVELOPE(-67.133,-67.133,-68.117,-68.117) Raúl ENVELOPE(-65.700,-65.700,-68.167,-68.167) Marine and Freshwater Research 68 12 2355 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
CLIMATE CHANGE ECOSYSTEM PROCESSES LIMNOLOGY https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
spellingShingle |
CLIMATE CHANGE ECOSYSTEM PROCESSES LIMNOLOGY https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 Zagarese, Horacio Ernesto Ferraro, Marcela Andrea Queimaliños, Claudia Patricia Dieguez, Maria del Carmen Añón Suárez, Diego Alejandro Llames, Maria Eugenia del Rosario Patterns of dissolved organic matter across the Patagonian landscape: A broad-scale survey of Chilean and Argentine lakes |
topic_facet |
CLIMATE CHANGE ECOSYSTEM PROCESSES LIMNOLOGY https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
description |
Dissolved organic matter (DOM) is a complex mixture of carbon compounds from autochthonous and allochthonous sources. Dissolved organic carbon (DOC) concentrations and optical metrics of DOM provide clues as to the sources and processes affecting the DOM pool. Herein we provide the first broad-scale characterisation of DOM from Patagonian lakes across a strong west-east precipitation gradient. Fifty-eight lakes from Northern Patagonia (Argentina and Chile) plus six lakes from the Antarctic Peninsula were sampled during summer 2000-01. Six DOM metrics were evaluated: DOC absorbance at 254nm (a254) and 350nm (a350), DOC-specific absorbance at 254nm (a254/DOC) and 350nm (a350/DOC) and spectral slope between 275 and 295nm (S275-295). The DOM of Chilean maritime lakes and shallow (<15m) Andean lakes exhibited terrestrial signatures and a pattern of variation consistent with their occurrence across the longitudinal precipitation gradient (i.e. S275-295 increased, whereas a350/DOC decreased from west to east). The contribution of allochthonous DOM was smaller in deep (>15m) Andean lakes, which is consistent with their longer water retention time. Steppe lakes, mostly from endorheic basins, made up the most heterogeneous group with regard to DOM characteristics. Fil: Zagarese, Horacio Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Biotecnológicas. Instituto de Investigaciones Biotecnológicas "Dr. Raúl Alfonsín" (sede Chascomús). Universidad Nacional de San Martín. Instituto de Investigaciones Biotecnológicas. Instituto de Investigaciones Biotecnológicas "Dr. Raúl Alfonsín" (sede Chascomús); Argentina Fil: Ferraro, Marcela Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Biotecnológicas. Instituto de Investigaciones Biotecnológicas "Dr. Raúl Alfonsín" (sede Chascomús). Universidad Nacional de San Martín. Instituto ... |
format |
Article in Journal/Newspaper |
author |
Zagarese, Horacio Ernesto Ferraro, Marcela Andrea Queimaliños, Claudia Patricia Dieguez, Maria del Carmen Añón Suárez, Diego Alejandro Llames, Maria Eugenia del Rosario |
author_facet |
Zagarese, Horacio Ernesto Ferraro, Marcela Andrea Queimaliños, Claudia Patricia Dieguez, Maria del Carmen Añón Suárez, Diego Alejandro Llames, Maria Eugenia del Rosario |
author_sort |
Zagarese, Horacio Ernesto |
title |
Patterns of dissolved organic matter across the Patagonian landscape: A broad-scale survey of Chilean and Argentine lakes |
title_short |
Patterns of dissolved organic matter across the Patagonian landscape: A broad-scale survey of Chilean and Argentine lakes |
title_full |
Patterns of dissolved organic matter across the Patagonian landscape: A broad-scale survey of Chilean and Argentine lakes |
title_fullStr |
Patterns of dissolved organic matter across the Patagonian landscape: A broad-scale survey of Chilean and Argentine lakes |
title_full_unstemmed |
Patterns of dissolved organic matter across the Patagonian landscape: A broad-scale survey of Chilean and Argentine lakes |
title_sort |
patterns of dissolved organic matter across the patagonian landscape: a broad-scale survey of chilean and argentine lakes |
publisher |
Csiro Publishing |
url |
http://hdl.handle.net/11336/51483 |
long_lat |
ENVELOPE(-67.133,-67.133,-68.117,-68.117) ENVELOPE(-65.700,-65.700,-68.167,-68.167) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Patagonia Argentina Argentine San Martín Raúl |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Patagonia Argentina Argentine San Martín Raúl |
genre |
Antarc* Antarctic Antarctic Peninsula |
genre_facet |
Antarc* Antarctic Antarctic Peninsula |
op_relation |
info:eu-repo/semantics/altIdentifier/url/http://www.publish.csiro.au/mf/MF17023 info:eu-repo/semantics/altIdentifier/doi/10.1071/MF17023 http://hdl.handle.net/11336/51483 Zagarese, Horacio Ernesto; Ferraro, Marcela Andrea; Queimaliños, Claudia Patricia; Dieguez, Maria del Carmen; Añón Suárez, Diego Alejandro; et al.; Patterns of dissolved organic matter across the Patagonian landscape: A broad-scale survey of Chilean and Argentine lakes; Csiro Publishing; Marine and Freshwater Research; 68; 12; 7-8-2017; 2355-2365 1323-1650 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1071/MF17023 |
container_title |
Marine and Freshwater Research |
container_volume |
68 |
container_issue |
12 |
container_start_page |
2355 |
_version_ |
1779309522109595648 |