Fluxes of CO 2 , CH 4 , and N 2 O in tundra-covered and Nothofagus forest soils in the Argentinian Patagonia
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) While most soils in periglacial environments present high fluxes of CO 2 (F CO2 ), CH 4 (F CH4 ), and N 2 O (F N2O ), few of them have a tendency to drain greenhou...
Published in: | Science of The Total Environment |
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Online Access: | http://hdl.handle.net/11449/188562 https://doi.org/10.1016/j.scitotenv.2018.12.328 |
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ftunivespir:oai:repositorio.unesp.br:11449/188562 2023-07-02T03:29:43+02:00 Fluxes of CO 2 , CH 4 , and N 2 O in tundra-covered and Nothofagus forest soils in the Argentinian Patagonia Sá, Mariana Médice Firme Schaefer, Carlos Ernesto G.R. Loureiro, Diego C. Simas, Felipe N.B. Alves, Bruno J.R. de Sá Mendonça, Eduardo de Figueiredo, Eduardo Barretto La Scala, Newton Panosso, Alan R. Universidade Estadual Paulista (UNESP) 2019-04-01 401-409 http://hdl.handle.net/11449/188562 https://doi.org/10.1016/j.scitotenv.2018.12.328 eng eng Science of the Total Environment http://dx.doi.org/10.1016/j.scitotenv.2018.12.328 Science of the Total Environment, v. 659, p. 401-409. 1879-1026 0048-9697 http://hdl.handle.net/11449/188562 doi:10.1016/j.scitotenv.2018.12.328 2-s2.0-85059404694 openAccess Climate change GHG emissions Tierra del Fuego info:eu-repo/semantics/article 2019 ftunivespir https://doi.org/10.1016/j.scitotenv.2018.12.328 2023-06-12T17:16:00Z Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) While most soils in periglacial environments present high fluxes of CO 2 (F CO2 ), CH 4 (F CH4 ), and N 2 O (F N2O ), few of them have a tendency to drain greenhouse gases from the atmosphere. This study aimed to assess greenhouse gas fluxes at different sub-Antarctic sites and time periods (at the beginning of thaw and height of summer). To investigate the time of year effect on greenhouse gas emissions, F CO2 , F CH4 , and F N2O were measured at two sites tundra-covered (Ti and Th) and Nothofagus forest soil (Nf) on Monte Martial, at the southernmost tip of South America, Tierra del Fuego, Argentina. F CO2 ranged from 96.33 to 225.72 μg CO 2 m −2 s −1 across all sites and periods, showing a positive correlation with soil temperature (Ts) (4.1 and 8.2 °C, respectively) (r 2 > 0.7; p < 0.05). The highest values of F CO2 were found at Ti and Th (728.2 and 662.64 μg CO 2 m −2 s −1 , respectively), which were related to higher temperatures (8.2 and 8.6 °C, respectively) when compared to those of Nf. For F CH4 , the capture (drain) occurred during both periods at Nf (−26 and −79 μg C–CH 4 m −2 h −1 ) as well as Ti and Th (−21 and 12 μg C–CH 4 m −2 h −1 , respectively). F N2O also presented low values during both periods and showed a tendency to drain N 2 O from the atmosphere, especially at Nf (−2 μg N–N 2 O m −2 h −1 ). In addition, F N2O was slightly positive for Ti and Th (0.3 and 0.55 μg N–N 2 O m −2 h −1 , respectively). Soil moisture did not show a correlation (p > 0.05) with the measured greenhouse gas fluxes. A scenario of increased temperatures might result in changes in the balance between the emissions and drains of these gases from soils, leading to higher emission values of CH 4 and N 2 O, especially for tundra covered soils (Ti and Th), where the highest average fluxes and thermohydric variations were observed over the year. Article in Journal/Newspaper Antarc* Antarctic Tundra Tierra del Fuego Universidade Estadual Paulista São Paulo: Repositório Institucional UNESP Antarctic Argentina Patagonia Science of The Total Environment 659 401 409 |
institution |
Open Polar |
collection |
Universidade Estadual Paulista São Paulo: Repositório Institucional UNESP |
op_collection_id |
ftunivespir |
language |
English |
topic |
Climate change GHG emissions Tierra del Fuego |
spellingShingle |
Climate change GHG emissions Tierra del Fuego Sá, Mariana Médice Firme Schaefer, Carlos Ernesto G.R. Loureiro, Diego C. Simas, Felipe N.B. Alves, Bruno J.R. de Sá Mendonça, Eduardo de Figueiredo, Eduardo Barretto La Scala, Newton Panosso, Alan R. Fluxes of CO 2 , CH 4 , and N 2 O in tundra-covered and Nothofagus forest soils in the Argentinian Patagonia |
topic_facet |
Climate change GHG emissions Tierra del Fuego |
description |
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) While most soils in periglacial environments present high fluxes of CO 2 (F CO2 ), CH 4 (F CH4 ), and N 2 O (F N2O ), few of them have a tendency to drain greenhouse gases from the atmosphere. This study aimed to assess greenhouse gas fluxes at different sub-Antarctic sites and time periods (at the beginning of thaw and height of summer). To investigate the time of year effect on greenhouse gas emissions, F CO2 , F CH4 , and F N2O were measured at two sites tundra-covered (Ti and Th) and Nothofagus forest soil (Nf) on Monte Martial, at the southernmost tip of South America, Tierra del Fuego, Argentina. F CO2 ranged from 96.33 to 225.72 μg CO 2 m −2 s −1 across all sites and periods, showing a positive correlation with soil temperature (Ts) (4.1 and 8.2 °C, respectively) (r 2 > 0.7; p < 0.05). The highest values of F CO2 were found at Ti and Th (728.2 and 662.64 μg CO 2 m −2 s −1 , respectively), which were related to higher temperatures (8.2 and 8.6 °C, respectively) when compared to those of Nf. For F CH4 , the capture (drain) occurred during both periods at Nf (−26 and −79 μg C–CH 4 m −2 h −1 ) as well as Ti and Th (−21 and 12 μg C–CH 4 m −2 h −1 , respectively). F N2O also presented low values during both periods and showed a tendency to drain N 2 O from the atmosphere, especially at Nf (−2 μg N–N 2 O m −2 h −1 ). In addition, F N2O was slightly positive for Ti and Th (0.3 and 0.55 μg N–N 2 O m −2 h −1 , respectively). Soil moisture did not show a correlation (p > 0.05) with the measured greenhouse gas fluxes. A scenario of increased temperatures might result in changes in the balance between the emissions and drains of these gases from soils, leading to higher emission values of CH 4 and N 2 O, especially for tundra covered soils (Ti and Th), where the highest average fluxes and thermohydric variations were observed over the year. |
author2 |
Universidade Estadual Paulista (UNESP) |
format |
Article in Journal/Newspaper |
author |
Sá, Mariana Médice Firme Schaefer, Carlos Ernesto G.R. Loureiro, Diego C. Simas, Felipe N.B. Alves, Bruno J.R. de Sá Mendonça, Eduardo de Figueiredo, Eduardo Barretto La Scala, Newton Panosso, Alan R. |
author_facet |
Sá, Mariana Médice Firme Schaefer, Carlos Ernesto G.R. Loureiro, Diego C. Simas, Felipe N.B. Alves, Bruno J.R. de Sá Mendonça, Eduardo de Figueiredo, Eduardo Barretto La Scala, Newton Panosso, Alan R. |
author_sort |
Sá, Mariana Médice Firme |
title |
Fluxes of CO 2 , CH 4 , and N 2 O in tundra-covered and Nothofagus forest soils in the Argentinian Patagonia |
title_short |
Fluxes of CO 2 , CH 4 , and N 2 O in tundra-covered and Nothofagus forest soils in the Argentinian Patagonia |
title_full |
Fluxes of CO 2 , CH 4 , and N 2 O in tundra-covered and Nothofagus forest soils in the Argentinian Patagonia |
title_fullStr |
Fluxes of CO 2 , CH 4 , and N 2 O in tundra-covered and Nothofagus forest soils in the Argentinian Patagonia |
title_full_unstemmed |
Fluxes of CO 2 , CH 4 , and N 2 O in tundra-covered and Nothofagus forest soils in the Argentinian Patagonia |
title_sort |
fluxes of co 2 , ch 4 , and n 2 o in tundra-covered and nothofagus forest soils in the argentinian patagonia |
publishDate |
2019 |
url |
http://hdl.handle.net/11449/188562 https://doi.org/10.1016/j.scitotenv.2018.12.328 |
geographic |
Antarctic Argentina Patagonia |
geographic_facet |
Antarctic Argentina Patagonia |
genre |
Antarc* Antarctic Tundra Tierra del Fuego |
genre_facet |
Antarc* Antarctic Tundra Tierra del Fuego |
op_relation |
Science of the Total Environment http://dx.doi.org/10.1016/j.scitotenv.2018.12.328 Science of the Total Environment, v. 659, p. 401-409. 1879-1026 0048-9697 http://hdl.handle.net/11449/188562 doi:10.1016/j.scitotenv.2018.12.328 2-s2.0-85059404694 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1016/j.scitotenv.2018.12.328 |
container_title |
Science of The Total Environment |
container_volume |
659 |
container_start_page |
401 |
op_container_end_page |
409 |
_version_ |
1770272166146736128 |