Spatial Variability of CO2 Emissions from Newly Exposed Paraglacial Soils at a Glacier Retreat Zone on King George Island, Maritime Antarctica
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Thawed soils in Antarctica represent organic carbon (C) reservoirs with great potential to increase the net losses of CO2 to the atmosphere under climate change scenarios. This study spatially zones CO2 emissions from soil and vege...
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Online Access: | http://hdl.handle.net/11449/116209 https://doi.org/10.1002/ppp.1818 |
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ftunivespir:oai:repositorio.unesp.br:11449/116209 2023-07-02T03:30:05+02:00 Spatial Variability of CO2 Emissions from Newly Exposed Paraglacial Soils at a Glacier Retreat Zone on King George Island, Maritime Antarctica Thomazini, Andre Teixeira, Daniel De Bortoli Gabrig Turbay, Caio Vinicius La Scala, Newton Schaefer, Carlos Ernesto G. R. Mendonca, Eduardo De Sa Universidade Estadual Paulista (UNESP) 2014-10-01 233-242 http://hdl.handle.net/11449/116209 https://doi.org/10.1002/ppp.1818 eng eng Wiley-Blackwell Permafrost And Periglacial Processes 3.529 1,289 http://dx.doi.org/10.1002/ppp.1818 Permafrost And Periglacial Processes. Hoboken: Wiley-blackwell, v. 25, n. 4, p. 233-242, 2014. 1045-6740 http://hdl.handle.net/11449/116209 doi:10.1002/ppp.1818 WOS:000345992700002 1449605928537533 closedAccess permafrost soil organic matter organic carbon info:eu-repo/semantics/article 2014 ftunivespir https://doi.org/10.1002/ppp.1818 2023-06-12T16:35:27Z Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Thawed soils in Antarctica represent organic carbon (C) reservoirs with great potential to increase the net losses of CO2 to the atmosphere under climate change scenarios. This study spatially zones CO2 emissions from soil and vegetation along a transect in front of the retreating margin of Ecology Glacier in Admiralty Bay, King George Island, South Shetlands, near the Polish Antarctic station Henryk Arctowski. Two experiments were carried out to determine soil respiration: (1) a transect of 150 measuring points spaced 1m apart, statistically analysed with split moving windows, identified three regions with different patterns of CO2 emissions; (2) a survey with three grids containing 60 sampling points, with a minimum distance between points of 0.30m, totalling 2.7x1.5m, in each of the identified locations. The survey showed that CO2 emission rates decreased (from 2.38 to 0.00 mu molm(-2)s(-1)) and soil temperature at 5cm depth increased (from 1.9 to 7 degrees C) near the glacier. The site farthest from the glacier provided an emission 3.5 times higher than the closest site. The spatial variability of CO2 emissions decreased with distance from the glacier. Soil development and vegetation are identified as key drivers of CO2 emissions. Soil formation and vegetation growth increased with longer exposure since deglaciation, leading to enhanced homogeneity of CO2 emissions, independent of permafrost occurrence and stability. Copyright (c) 2014 John Wiley & Sons, Ltd. Article in Journal/Newspaper Antarc* Antarctic Antarctica King George Island permafrost Permafrost and Periglacial Processes Universidade Estadual Paulista São Paulo: Repositório Institucional UNESP Antarctic King George Island Admiralty Bay Arctowski ENVELOPE(-58.467,-58.467,-62.167,-62.167) Ecology Glacier ENVELOPE(-58.476,-58.476,-62.177,-62.177) Permafrost and Periglacial Processes 25 4 233 242 |
institution |
Open Polar |
collection |
Universidade Estadual Paulista São Paulo: Repositório Institucional UNESP |
op_collection_id |
ftunivespir |
language |
English |
topic |
permafrost soil organic matter organic carbon |
spellingShingle |
permafrost soil organic matter organic carbon Thomazini, Andre Teixeira, Daniel De Bortoli Gabrig Turbay, Caio Vinicius La Scala, Newton Schaefer, Carlos Ernesto G. R. Mendonca, Eduardo De Sa Spatial Variability of CO2 Emissions from Newly Exposed Paraglacial Soils at a Glacier Retreat Zone on King George Island, Maritime Antarctica |
topic_facet |
permafrost soil organic matter organic carbon |
description |
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Thawed soils in Antarctica represent organic carbon (C) reservoirs with great potential to increase the net losses of CO2 to the atmosphere under climate change scenarios. This study spatially zones CO2 emissions from soil and vegetation along a transect in front of the retreating margin of Ecology Glacier in Admiralty Bay, King George Island, South Shetlands, near the Polish Antarctic station Henryk Arctowski. Two experiments were carried out to determine soil respiration: (1) a transect of 150 measuring points spaced 1m apart, statistically analysed with split moving windows, identified three regions with different patterns of CO2 emissions; (2) a survey with three grids containing 60 sampling points, with a minimum distance between points of 0.30m, totalling 2.7x1.5m, in each of the identified locations. The survey showed that CO2 emission rates decreased (from 2.38 to 0.00 mu molm(-2)s(-1)) and soil temperature at 5cm depth increased (from 1.9 to 7 degrees C) near the glacier. The site farthest from the glacier provided an emission 3.5 times higher than the closest site. The spatial variability of CO2 emissions decreased with distance from the glacier. Soil development and vegetation are identified as key drivers of CO2 emissions. Soil formation and vegetation growth increased with longer exposure since deglaciation, leading to enhanced homogeneity of CO2 emissions, independent of permafrost occurrence and stability. Copyright (c) 2014 John Wiley & Sons, Ltd. |
author2 |
Universidade Estadual Paulista (UNESP) |
format |
Article in Journal/Newspaper |
author |
Thomazini, Andre Teixeira, Daniel De Bortoli Gabrig Turbay, Caio Vinicius La Scala, Newton Schaefer, Carlos Ernesto G. R. Mendonca, Eduardo De Sa |
author_facet |
Thomazini, Andre Teixeira, Daniel De Bortoli Gabrig Turbay, Caio Vinicius La Scala, Newton Schaefer, Carlos Ernesto G. R. Mendonca, Eduardo De Sa |
author_sort |
Thomazini, Andre |
title |
Spatial Variability of CO2 Emissions from Newly Exposed Paraglacial Soils at a Glacier Retreat Zone on King George Island, Maritime Antarctica |
title_short |
Spatial Variability of CO2 Emissions from Newly Exposed Paraglacial Soils at a Glacier Retreat Zone on King George Island, Maritime Antarctica |
title_full |
Spatial Variability of CO2 Emissions from Newly Exposed Paraglacial Soils at a Glacier Retreat Zone on King George Island, Maritime Antarctica |
title_fullStr |
Spatial Variability of CO2 Emissions from Newly Exposed Paraglacial Soils at a Glacier Retreat Zone on King George Island, Maritime Antarctica |
title_full_unstemmed |
Spatial Variability of CO2 Emissions from Newly Exposed Paraglacial Soils at a Glacier Retreat Zone on King George Island, Maritime Antarctica |
title_sort |
spatial variability of co2 emissions from newly exposed paraglacial soils at a glacier retreat zone on king george island, maritime antarctica |
publisher |
Wiley-Blackwell |
publishDate |
2014 |
url |
http://hdl.handle.net/11449/116209 https://doi.org/10.1002/ppp.1818 |
long_lat |
ENVELOPE(-58.467,-58.467,-62.167,-62.167) ENVELOPE(-58.476,-58.476,-62.177,-62.177) |
geographic |
Antarctic King George Island Admiralty Bay Arctowski Ecology Glacier |
geographic_facet |
Antarctic King George Island Admiralty Bay Arctowski Ecology Glacier |
genre |
Antarc* Antarctic Antarctica King George Island permafrost Permafrost and Periglacial Processes |
genre_facet |
Antarc* Antarctic Antarctica King George Island permafrost Permafrost and Periglacial Processes |
op_relation |
Permafrost And Periglacial Processes 3.529 1,289 http://dx.doi.org/10.1002/ppp.1818 Permafrost And Periglacial Processes. Hoboken: Wiley-blackwell, v. 25, n. 4, p. 233-242, 2014. 1045-6740 http://hdl.handle.net/11449/116209 doi:10.1002/ppp.1818 WOS:000345992700002 1449605928537533 |
op_rights |
closedAccess |
op_doi |
https://doi.org/10.1002/ppp.1818 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
25 |
container_issue |
4 |
container_start_page |
233 |
op_container_end_page |
242 |
_version_ |
1770274337291501568 |