Insights and issues with simulating terrestrial DOC loading of Arctic river networks
Terrestrial carbon dynamics influence the contribution of dissolved organic carbon (DOC) to river networks in addition to hydrology. In this study, we use a biogeochemical process model to simulate the lateral transfer of DOC from land to the Arctic Ocean via riverine transport. We estimate that, ov...
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ftdatacite:10.6084/m9.figshare.c.3296048.v1 2023-05-15T14:43:22+02:00 Insights and issues with simulating terrestrial DOC loading of Arctic river networks Kicklighter, David W. Hayes, Daniel J. McClelland, James W. Peterson, Bruce J. A. David McGuire Melillo, Jerry M. 2016 https://dx.doi.org/10.6084/m9.figshare.c.3296048.v1 https://figshare.com/collections/Insights_and_issues_with_simulating_terrestrial_DOC_loading_of_Arctic_river_networks/3296048/1 unknown Figshare https://dx.doi.org/10.1890/11-1050.1 https://dx.doi.org/10.6084/m9.figshare.c.3296048 CC-BY http://creativecommons.org/licenses/by/3.0/us CC-BY Environmental Science Ecology FOS Biological sciences Collection article 2016 ftdatacite https://doi.org/10.6084/m9.figshare.c.3296048.v1 https://doi.org/10.1890/11-1050.1 https://doi.org/10.6084/m9.figshare.c.3296048 2021-11-05T12:55:41Z Terrestrial carbon dynamics influence the contribution of dissolved organic carbon (DOC) to river networks in addition to hydrology. In this study, we use a biogeochemical process model to simulate the lateral transfer of DOC from land to the Arctic Ocean via riverine transport. We estimate that, over the 20th century, the pan-Arctic watershed has contributed, on average, 32 Tg C/yr of DOC to river networks emptying into the Arctic Ocean with most of the DOC coming from the extensive area of boreal deciduous needle-leaved forests and forested wetlands in Eurasian watersheds. We also estimate that the rate of terrestrial DOC loading has been increasing by 0.037 Tg C/yr 2 over the 20th century primarily as a result of climate-induced increases in water yield. These increases have been offset by decreases in terrestrial DOC loading caused by wildfires. Other environmental factors (CO 2 fertilization, ozone pollution, atmospheric nitrogen deposition, timber harvest, agriculture) are estimated to have relatively small effects on terrestrial DOC loading to Arctic rivers. The effects of the various environmental factors on terrestrial carbon dynamics have both offset and enhanced concurrent effects on hydrology to influence terrestrial DOC loading and may be changing the relative importance of terrestrial carbon dynamics on this carbon flux. Improvements in simulating terrestrial DOC loading to pan-Arctic rivers in the future will require better information on the production and consumption of DOC within the soil profile, the transfer of DOC from land to headwater streams, the spatial distribution of precipitation and its temporal trends, carbon dynamics of larch-dominated ecosystems in eastern Siberia, and the role of industrial organic effluents on carbon budgets of rivers in western Russia. Article in Journal/Newspaper Arctic Arctic Ocean Siberia DataCite Metadata Store (German National Library of Science and Technology) Arctic Arctic Ocean |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Environmental Science Ecology FOS Biological sciences |
spellingShingle |
Environmental Science Ecology FOS Biological sciences Kicklighter, David W. Hayes, Daniel J. McClelland, James W. Peterson, Bruce J. A. David McGuire Melillo, Jerry M. Insights and issues with simulating terrestrial DOC loading of Arctic river networks |
topic_facet |
Environmental Science Ecology FOS Biological sciences |
description |
Terrestrial carbon dynamics influence the contribution of dissolved organic carbon (DOC) to river networks in addition to hydrology. In this study, we use a biogeochemical process model to simulate the lateral transfer of DOC from land to the Arctic Ocean via riverine transport. We estimate that, over the 20th century, the pan-Arctic watershed has contributed, on average, 32 Tg C/yr of DOC to river networks emptying into the Arctic Ocean with most of the DOC coming from the extensive area of boreal deciduous needle-leaved forests and forested wetlands in Eurasian watersheds. We also estimate that the rate of terrestrial DOC loading has been increasing by 0.037 Tg C/yr 2 over the 20th century primarily as a result of climate-induced increases in water yield. These increases have been offset by decreases in terrestrial DOC loading caused by wildfires. Other environmental factors (CO 2 fertilization, ozone pollution, atmospheric nitrogen deposition, timber harvest, agriculture) are estimated to have relatively small effects on terrestrial DOC loading to Arctic rivers. The effects of the various environmental factors on terrestrial carbon dynamics have both offset and enhanced concurrent effects on hydrology to influence terrestrial DOC loading and may be changing the relative importance of terrestrial carbon dynamics on this carbon flux. Improvements in simulating terrestrial DOC loading to pan-Arctic rivers in the future will require better information on the production and consumption of DOC within the soil profile, the transfer of DOC from land to headwater streams, the spatial distribution of precipitation and its temporal trends, carbon dynamics of larch-dominated ecosystems in eastern Siberia, and the role of industrial organic effluents on carbon budgets of rivers in western Russia. |
format |
Article in Journal/Newspaper |
author |
Kicklighter, David W. Hayes, Daniel J. McClelland, James W. Peterson, Bruce J. A. David McGuire Melillo, Jerry M. |
author_facet |
Kicklighter, David W. Hayes, Daniel J. McClelland, James W. Peterson, Bruce J. A. David McGuire Melillo, Jerry M. |
author_sort |
Kicklighter, David W. |
title |
Insights and issues with simulating terrestrial DOC loading of Arctic river networks |
title_short |
Insights and issues with simulating terrestrial DOC loading of Arctic river networks |
title_full |
Insights and issues with simulating terrestrial DOC loading of Arctic river networks |
title_fullStr |
Insights and issues with simulating terrestrial DOC loading of Arctic river networks |
title_full_unstemmed |
Insights and issues with simulating terrestrial DOC loading of Arctic river networks |
title_sort |
insights and issues with simulating terrestrial doc loading of arctic river networks |
publisher |
Figshare |
publishDate |
2016 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.3296048.v1 https://figshare.com/collections/Insights_and_issues_with_simulating_terrestrial_DOC_loading_of_Arctic_river_networks/3296048/1 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Siberia |
genre_facet |
Arctic Arctic Ocean Siberia |
op_relation |
https://dx.doi.org/10.1890/11-1050.1 https://dx.doi.org/10.6084/m9.figshare.c.3296048 |
op_rights |
CC-BY http://creativecommons.org/licenses/by/3.0/us |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.3296048.v1 https://doi.org/10.1890/11-1050.1 https://doi.org/10.6084/m9.figshare.c.3296048 |
_version_ |
1766315028823146496 |