Spatial Variability of CO2 Emissions from Newly Exposed Paraglacial Soils at a Glacier Retreat Zone on King George Island, Maritime Antarctica
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...
Published in: | Permafrost and Periglacial Processes |
---|---|
Main Authors: | , , , , , |
Other Authors: | |
Format: | Other/Unknown Material |
Language: | English |
Published: |
Wiley-Blackwell
2015
|
Subjects: | |
Online Access: | http://acervodigital.unesp.br/handle/11449/116209 http://hdl.handle.net/11449/116209 https://doi.org/10.1002/ppp.1818 |
id |
ftunivesp:oai:acervodigital.unesp.br:11449/116209 |
---|---|
record_format |
openpolar |
spelling |
ftunivesp:oai:acervodigital.unesp.br:11449/116209 2023-05-15T13:49:05+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) 2015-03-18T15:52:35Z http://acervodigital.unesp.br/handle/11449/116209 http://hdl.handle.net/11449/116209 https://doi.org/10.1002/ppp.1818 eng eng Wiley-Blackwell Permafrost And Periglacial Processes Permafrost And Periglacial Processes. Hoboken: Wiley-blackwell, v. 25, n. 4, p. 233-242, 2014. 1045-6740 http://hdl.handle.net/11449/116209 http://acervodigital.unesp.br/handle/11449/116209 doi:10.1002/ppp.1818 WOS:000345992700002 http://dx.doi.org/10.1002/ppp.1818 info:eu-repo/semantics/closedAccess permafrost soil organic matter organic carbon outro 2015 ftunivesp https://doi.org/10.1002/ppp.1818 2021-07-18T09:00:26Z 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. Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Other/Unknown Material Antarc* Antarctic Antarctica King George Island permafrost Permafrost and Periglacial Processes Universidade Estadual Paulista São Paulo: Acervo Digital da UNESP / São Paulo State University Admiralty Bay Antarctic Arctowski ENVELOPE(-58.467,-58.467,-62.167,-62.167) Ecology Glacier ENVELOPE(-58.476,-58.476,-62.177,-62.177) King George Island Permafrost and Periglacial Processes 25 4 233 242 |
institution |
Open Polar |
collection |
Universidade Estadual Paulista São Paulo: Acervo Digital da UNESP / São Paulo State University |
op_collection_id |
ftunivesp |
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 |
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. Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) |
author2 |
Universidade Estadual Paulista (UNESP) |
format |
Other/Unknown Material |
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 |
2015 |
url |
http://acervodigital.unesp.br/handle/11449/116209 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 |
Admiralty Bay Antarctic Arctowski Ecology Glacier King George Island |
geographic_facet |
Admiralty Bay Antarctic Arctowski Ecology Glacier King George Island |
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 Permafrost And Periglacial Processes. Hoboken: Wiley-blackwell, v. 25, n. 4, p. 233-242, 2014. 1045-6740 http://hdl.handle.net/11449/116209 http://acervodigital.unesp.br/handle/11449/116209 doi:10.1002/ppp.1818 WOS:000345992700002 http://dx.doi.org/10.1002/ppp.1818 |
op_rights |
info:eu-repo/semantics/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_ |
1766250803455066112 |