Landscape controls on riverine export of dissolved organic carbon from Great Britain
Abstract The dissolved organic carbon (DOC) export from land to ocean via rivers is a significant term in the global C cycle, and has been modified in many areas by human activity. DOC exports from large global rivers are fairly well quantified, but those from smaller river systems, including those...
Published in: | Biogeochemistry |
---|---|
Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Springer Science and Business Media LLC
2021
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1007/s10533-021-00762-2 http://link.springer.com/content/pdf/10.1007/s10533-021-00762-2.pdf http://link.springer.com/article/10.1007/s10533-021-00762-2/fulltext.html |
id |
crspringernat:10.1007/s10533-021-00762-2 |
---|---|
record_format |
openpolar |
spelling |
crspringernat:10.1007/s10533-021-00762-2 2023-05-15T15:18:41+02:00 Landscape controls on riverine export of dissolved organic carbon from Great Britain Williamson, Jennifer L. Tye, Andrew Lapworth, Dan J. Monteith, Don Sanders, Richard Mayor, Daniel J. Barry, Chris Bowes, Mike Bowes, Michael Burden, Annette Callaghan, Nathan Farr, Gareth Felgate, Stacey Fitch, Alice Gibb, Stuart Gilbert, Pete Hargreaves, Geoff Keenan, Patrick Kitidis, Vassilis Juergens, Monika Martin, Adrian Mounteney, Ian Nightingale, Philip D. Pereira, M. Gloria Olszewska, Justyna Pickard, Amy Rees, Andrew P. Spears, Bryan Stinchcombe, Mark White, Debbie Williams, Peter Worrall, Fred Evans, Chris Natural Environment Research Council 2021 http://dx.doi.org/10.1007/s10533-021-00762-2 http://link.springer.com/content/pdf/10.1007/s10533-021-00762-2.pdf http://link.springer.com/article/10.1007/s10533-021-00762-2/fulltext.html en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Biogeochemistry ISSN 0168-2563 1573-515X Earth-Surface Processes Water Science and Technology Environmental Chemistry journal-article 2021 crspringernat https://doi.org/10.1007/s10533-021-00762-2 2022-01-04T15:27:11Z Abstract The dissolved organic carbon (DOC) export from land to ocean via rivers is a significant term in the global C cycle, and has been modified in many areas by human activity. DOC exports from large global rivers are fairly well quantified, but those from smaller river systems, including those draining oceanic regions, are generally under-represented in global syntheses. Given that these regions typically have high runoff and high peat cover, they may exert a disproportionate influence on the global land–ocean DOC export. Here we describe a comprehensive new assessment of the annual riverine DOC export to estuaries across the island of Great Britain (GB), which spans the latitude range 50–60° N with strong spatial gradients of topography, soils, rainfall, land use and population density. DOC yields (export per unit area) were positively related to and best predicted by rainfall, peat extent and forest cover, but relatively insensitive to population density or agricultural development. Based on an empirical relationship with land use and rainfall we estimate that the DOC export from the GB land area to the freshwater-seawater interface was 1.15 Tg C year −1 in 2017. The average yield for GB rivers is 5.04 g C m −2 year −1 , higher than most of the world’s major rivers, including those of the humid tropics and Arctic, supporting the conclusion that under-representation of smaller river systems draining peat-rich areas could lead to under-estimation of the global land–ocean DOC export. The main anthropogenic factor influencing the spatial distribution of GB DOC exports appears to be upland conifer plantation forestry, which is estimated to have raised the overall DOC export by 0.168 Tg C year −1 . This is equivalent to 15% of the estimated current rate of net CO 2 uptake by British forests. With the UK and many other countries seeking to expand plantation forest cover for climate change mitigation, this ‘leak in the ecosystem’ should be incorporated in future assessments of the CO 2 sequestration potential of forest planting strategies. Article in Journal/Newspaper Arctic Climate change Springer Nature (via Crossref) Arctic The Gib ENVELOPE(-57.531,-57.531,51.817,51.817) Biogeochemistry |
institution |
Open Polar |
collection |
Springer Nature (via Crossref) |
op_collection_id |
crspringernat |
language |
English |
topic |
Earth-Surface Processes Water Science and Technology Environmental Chemistry |
spellingShingle |
Earth-Surface Processes Water Science and Technology Environmental Chemistry Williamson, Jennifer L. Tye, Andrew Lapworth, Dan J. Monteith, Don Sanders, Richard Mayor, Daniel J. Barry, Chris Bowes, Mike Bowes, Michael Burden, Annette Callaghan, Nathan Farr, Gareth Felgate, Stacey Fitch, Alice Gibb, Stuart Gilbert, Pete Hargreaves, Geoff Keenan, Patrick Kitidis, Vassilis Juergens, Monika Martin, Adrian Mounteney, Ian Nightingale, Philip D. Pereira, M. Gloria Olszewska, Justyna Pickard, Amy Rees, Andrew P. Spears, Bryan Stinchcombe, Mark White, Debbie Williams, Peter Worrall, Fred Evans, Chris Landscape controls on riverine export of dissolved organic carbon from Great Britain |
topic_facet |
Earth-Surface Processes Water Science and Technology Environmental Chemistry |
description |
Abstract The dissolved organic carbon (DOC) export from land to ocean via rivers is a significant term in the global C cycle, and has been modified in many areas by human activity. DOC exports from large global rivers are fairly well quantified, but those from smaller river systems, including those draining oceanic regions, are generally under-represented in global syntheses. Given that these regions typically have high runoff and high peat cover, they may exert a disproportionate influence on the global land–ocean DOC export. Here we describe a comprehensive new assessment of the annual riverine DOC export to estuaries across the island of Great Britain (GB), which spans the latitude range 50–60° N with strong spatial gradients of topography, soils, rainfall, land use and population density. DOC yields (export per unit area) were positively related to and best predicted by rainfall, peat extent and forest cover, but relatively insensitive to population density or agricultural development. Based on an empirical relationship with land use and rainfall we estimate that the DOC export from the GB land area to the freshwater-seawater interface was 1.15 Tg C year −1 in 2017. The average yield for GB rivers is 5.04 g C m −2 year −1 , higher than most of the world’s major rivers, including those of the humid tropics and Arctic, supporting the conclusion that under-representation of smaller river systems draining peat-rich areas could lead to under-estimation of the global land–ocean DOC export. The main anthropogenic factor influencing the spatial distribution of GB DOC exports appears to be upland conifer plantation forestry, which is estimated to have raised the overall DOC export by 0.168 Tg C year −1 . This is equivalent to 15% of the estimated current rate of net CO 2 uptake by British forests. With the UK and many other countries seeking to expand plantation forest cover for climate change mitigation, this ‘leak in the ecosystem’ should be incorporated in future assessments of the CO 2 sequestration potential of forest planting strategies. |
author2 |
Natural Environment Research Council |
format |
Article in Journal/Newspaper |
author |
Williamson, Jennifer L. Tye, Andrew Lapworth, Dan J. Monteith, Don Sanders, Richard Mayor, Daniel J. Barry, Chris Bowes, Mike Bowes, Michael Burden, Annette Callaghan, Nathan Farr, Gareth Felgate, Stacey Fitch, Alice Gibb, Stuart Gilbert, Pete Hargreaves, Geoff Keenan, Patrick Kitidis, Vassilis Juergens, Monika Martin, Adrian Mounteney, Ian Nightingale, Philip D. Pereira, M. Gloria Olszewska, Justyna Pickard, Amy Rees, Andrew P. Spears, Bryan Stinchcombe, Mark White, Debbie Williams, Peter Worrall, Fred Evans, Chris |
author_facet |
Williamson, Jennifer L. Tye, Andrew Lapworth, Dan J. Monteith, Don Sanders, Richard Mayor, Daniel J. Barry, Chris Bowes, Mike Bowes, Michael Burden, Annette Callaghan, Nathan Farr, Gareth Felgate, Stacey Fitch, Alice Gibb, Stuart Gilbert, Pete Hargreaves, Geoff Keenan, Patrick Kitidis, Vassilis Juergens, Monika Martin, Adrian Mounteney, Ian Nightingale, Philip D. Pereira, M. Gloria Olszewska, Justyna Pickard, Amy Rees, Andrew P. Spears, Bryan Stinchcombe, Mark White, Debbie Williams, Peter Worrall, Fred Evans, Chris |
author_sort |
Williamson, Jennifer L. |
title |
Landscape controls on riverine export of dissolved organic carbon from Great Britain |
title_short |
Landscape controls on riverine export of dissolved organic carbon from Great Britain |
title_full |
Landscape controls on riverine export of dissolved organic carbon from Great Britain |
title_fullStr |
Landscape controls on riverine export of dissolved organic carbon from Great Britain |
title_full_unstemmed |
Landscape controls on riverine export of dissolved organic carbon from Great Britain |
title_sort |
landscape controls on riverine export of dissolved organic carbon from great britain |
publisher |
Springer Science and Business Media LLC |
publishDate |
2021 |
url |
http://dx.doi.org/10.1007/s10533-021-00762-2 http://link.springer.com/content/pdf/10.1007/s10533-021-00762-2.pdf http://link.springer.com/article/10.1007/s10533-021-00762-2/fulltext.html |
long_lat |
ENVELOPE(-57.531,-57.531,51.817,51.817) |
geographic |
Arctic The Gib |
geographic_facet |
Arctic The Gib |
genre |
Arctic Climate change |
genre_facet |
Arctic Climate change |
op_source |
Biogeochemistry ISSN 0168-2563 1573-515X |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1007/s10533-021-00762-2 |
container_title |
Biogeochemistry |
_version_ |
1766348879538683904 |