Earlier snowmelt may lead to late season declines in plant productivity and carbon sequestration in Arctic tundra ecosystems
Arctic warming is affecting snow cover and soil hydrology, with consequences for carbon sequestration in tundra ecosystems. The scarcity of observations in the Arctic has limited our understanding of the impact of covarying environmental drivers on the carbon balance of tundra ecosystems. In this st...
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ftunivnebraskali:oai:digitalcommons.unl.edu:wffdocs-1104 2023-11-12T04:11:09+01:00 Earlier snowmelt may lead to late season declines in plant productivity and carbon sequestration in Arctic tundra ecosystems Zona, Donatella Lafleur, Peter M. Hufkens, Koen Bailey, Barbara Gioli, Beniamino Burba, George Goodrich, Jordan P. Liljedahl, Anna K. Euskirchen, Eugénie S. Watts, Jennifer D. Farina, Mary Kimball, John S. Heimann, Martin Göckede, Mathias Pallandt, Martijn Christensen, Torben R. Mastepanov, Mikhail López-Blanco, Efrén Jackowicz-Korczynski, Marcin Dolman, Albertus J. Marchesini, Luca Belelli Commane, Roisin Wofsy, Steven C. Miller, Charles E. Lipson, David A. Hashemi, Josh Arndt, Kyle A. Kutzbach, Lars Holl, David Boike, Julia Wille, Christian Sachs, Torsten Kalhori, Aram Song, Xia 2022-12-01T08:00:00Z application/pdf https://digitalcommons.unl.edu/wffdocs/110 https://digitalcommons.unl.edu/context/wffdocs/article/1104/viewcontent/Zona_SR_2022_Earlier_snowmelt.pdf unknown DigitalCommons@University of Nebraska - Lincoln https://digitalcommons.unl.edu/wffdocs/110 https://digitalcommons.unl.edu/context/wffdocs/article/1104/viewcontent/Zona_SR_2022_Earlier_snowmelt.pdf Daugherty Water for Food Global Institute: Faculty Publications Civil and Environmental Engineering Environmental Health and Protection Environmental Monitoring Environmental Sciences Hydraulic Engineering Hydrology Natural Resource Economics Natural Resources and Conservation Natural Resources Management and Policy Sustainability Water Resource Management text 2022 ftunivnebraskali 2023-10-30T10:00:31Z Arctic warming is affecting snow cover and soil hydrology, with consequences for carbon sequestration in tundra ecosystems. The scarcity of observations in the Arctic has limited our understanding of the impact of covarying environmental drivers on the carbon balance of tundra ecosystems. In this study, we address some of these uncertainties through a novel record of 119 site-years of summer data from eddy covariance towers representing dominant tundra vegetation types located on continuous permafrost in the Arctic. Here we found that earlier snowmelt was associated with more tundra net CO2 sequestration and higher gross primary productivity (GPP) only in June and July, but with lower net carbon sequestration and lower GPP in August. Although higher evapotranspiration (ET) can result in soil drying with the progression of the summer, we did not find significantly lower soil moisture with earlier snowmelt, nor evidence that water stress affected GPP in the late growing season. Our results suggest that the expected increased CO2 sequestration arising from Arctic warming and the associated increase in growing season length may not materialize if tundra ecosystems are not able to continue sequestering CO2 later in the season. Text Arctic permafrost Tundra University of Nebraska-Lincoln: DigitalCommons@UNL Arctic |
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Open Polar |
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University of Nebraska-Lincoln: DigitalCommons@UNL |
op_collection_id |
ftunivnebraskali |
language |
unknown |
topic |
Civil and Environmental Engineering Environmental Health and Protection Environmental Monitoring Environmental Sciences Hydraulic Engineering Hydrology Natural Resource Economics Natural Resources and Conservation Natural Resources Management and Policy Sustainability Water Resource Management |
spellingShingle |
Civil and Environmental Engineering Environmental Health and Protection Environmental Monitoring Environmental Sciences Hydraulic Engineering Hydrology Natural Resource Economics Natural Resources and Conservation Natural Resources Management and Policy Sustainability Water Resource Management Zona, Donatella Lafleur, Peter M. Hufkens, Koen Bailey, Barbara Gioli, Beniamino Burba, George Goodrich, Jordan P. Liljedahl, Anna K. Euskirchen, Eugénie S. Watts, Jennifer D. Farina, Mary Kimball, John S. Heimann, Martin Göckede, Mathias Pallandt, Martijn Christensen, Torben R. Mastepanov, Mikhail López-Blanco, Efrén Jackowicz-Korczynski, Marcin Dolman, Albertus J. Marchesini, Luca Belelli Commane, Roisin Wofsy, Steven C. Miller, Charles E. Lipson, David A. Hashemi, Josh Arndt, Kyle A. Kutzbach, Lars Holl, David Boike, Julia Wille, Christian Sachs, Torsten Kalhori, Aram Song, Xia Earlier snowmelt may lead to late season declines in plant productivity and carbon sequestration in Arctic tundra ecosystems |
topic_facet |
Civil and Environmental Engineering Environmental Health and Protection Environmental Monitoring Environmental Sciences Hydraulic Engineering Hydrology Natural Resource Economics Natural Resources and Conservation Natural Resources Management and Policy Sustainability Water Resource Management |
description |
Arctic warming is affecting snow cover and soil hydrology, with consequences for carbon sequestration in tundra ecosystems. The scarcity of observations in the Arctic has limited our understanding of the impact of covarying environmental drivers on the carbon balance of tundra ecosystems. In this study, we address some of these uncertainties through a novel record of 119 site-years of summer data from eddy covariance towers representing dominant tundra vegetation types located on continuous permafrost in the Arctic. Here we found that earlier snowmelt was associated with more tundra net CO2 sequestration and higher gross primary productivity (GPP) only in June and July, but with lower net carbon sequestration and lower GPP in August. Although higher evapotranspiration (ET) can result in soil drying with the progression of the summer, we did not find significantly lower soil moisture with earlier snowmelt, nor evidence that water stress affected GPP in the late growing season. Our results suggest that the expected increased CO2 sequestration arising from Arctic warming and the associated increase in growing season length may not materialize if tundra ecosystems are not able to continue sequestering CO2 later in the season. |
format |
Text |
author |
Zona, Donatella Lafleur, Peter M. Hufkens, Koen Bailey, Barbara Gioli, Beniamino Burba, George Goodrich, Jordan P. Liljedahl, Anna K. Euskirchen, Eugénie S. Watts, Jennifer D. Farina, Mary Kimball, John S. Heimann, Martin Göckede, Mathias Pallandt, Martijn Christensen, Torben R. Mastepanov, Mikhail López-Blanco, Efrén Jackowicz-Korczynski, Marcin Dolman, Albertus J. Marchesini, Luca Belelli Commane, Roisin Wofsy, Steven C. Miller, Charles E. Lipson, David A. Hashemi, Josh Arndt, Kyle A. Kutzbach, Lars Holl, David Boike, Julia Wille, Christian Sachs, Torsten Kalhori, Aram Song, Xia |
author_facet |
Zona, Donatella Lafleur, Peter M. Hufkens, Koen Bailey, Barbara Gioli, Beniamino Burba, George Goodrich, Jordan P. Liljedahl, Anna K. Euskirchen, Eugénie S. Watts, Jennifer D. Farina, Mary Kimball, John S. Heimann, Martin Göckede, Mathias Pallandt, Martijn Christensen, Torben R. Mastepanov, Mikhail López-Blanco, Efrén Jackowicz-Korczynski, Marcin Dolman, Albertus J. Marchesini, Luca Belelli Commane, Roisin Wofsy, Steven C. Miller, Charles E. Lipson, David A. Hashemi, Josh Arndt, Kyle A. Kutzbach, Lars Holl, David Boike, Julia Wille, Christian Sachs, Torsten Kalhori, Aram Song, Xia |
author_sort |
Zona, Donatella |
title |
Earlier snowmelt may lead to late season declines in plant productivity and carbon sequestration in Arctic tundra ecosystems |
title_short |
Earlier snowmelt may lead to late season declines in plant productivity and carbon sequestration in Arctic tundra ecosystems |
title_full |
Earlier snowmelt may lead to late season declines in plant productivity and carbon sequestration in Arctic tundra ecosystems |
title_fullStr |
Earlier snowmelt may lead to late season declines in plant productivity and carbon sequestration in Arctic tundra ecosystems |
title_full_unstemmed |
Earlier snowmelt may lead to late season declines in plant productivity and carbon sequestration in Arctic tundra ecosystems |
title_sort |
earlier snowmelt may lead to late season declines in plant productivity and carbon sequestration in arctic tundra ecosystems |
publisher |
DigitalCommons@University of Nebraska - Lincoln |
publishDate |
2022 |
url |
https://digitalcommons.unl.edu/wffdocs/110 https://digitalcommons.unl.edu/context/wffdocs/article/1104/viewcontent/Zona_SR_2022_Earlier_snowmelt.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic permafrost Tundra |
genre_facet |
Arctic permafrost Tundra |
op_source |
Daugherty Water for Food Global Institute: Faculty Publications |
op_relation |
https://digitalcommons.unl.edu/wffdocs/110 https://digitalcommons.unl.edu/context/wffdocs/article/1104/viewcontent/Zona_SR_2022_Earlier_snowmelt.pdf |
_version_ |
1782330338668707840 |