Constraining modern day silicon cycling in Lake Baikal
Constraining the continental silicon cycle is a key requirement in attempts to understand both nutrient fluxes to the ocean and linkages between silicon and carbon cycling over different timescales. Silicon isotope data of dissolved silica (?30SiDSi) are presented here from Lake Baikal and its catch...
Published in: | Global Biogeochemical Cycles |
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American Geophysical Union
2017
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ftunnottinghamrr:oai:nottingham-repository.worktribe.com:851559 2023-05-15T15:09:32+02:00 Constraining modern day silicon cycling in Lake Baikal Panizzo, Virginia Swann, George E.A. Mackay, Anson W. Vologina, Elena Alleman, L. Andre, L. Pashley, Vanessa Horstwood, Matthew S.A. 2017-03-20 https://doi.org/10.1002/2016GB005518 https://nottingham-repository.worktribe.com/file/851559/1/Panizzo_et_al-2017-Global_Biogeochemical_Cycles.pdf https://nottingham-repository.worktribe.com/output/851559 unknown American Geophysical Union https://nottingham-repository.worktribe.com/output/851559 Global Biogeochemical Cycles Volume 31 Issue 3 doi:https://doi.org/10.1002/2016GB005518 https://nottingham-repository.worktribe.com/file/851559/1/Panizzo_et_al-2017-Global_Biogeochemical_Cycles.pdf 0886-6236 doi:10.1002/2016GB005518 openAccess Silicon isotopes ?30SiDSi Lake Baikal Silicon export Biogeochemical cycling Diatoms Journal Article 2017 ftunnottinghamrr https://doi.org/10.1002/2016GB005518 2022-10-13T22:09:41Z Constraining the continental silicon cycle is a key requirement in attempts to understand both nutrient fluxes to the ocean and linkages between silicon and carbon cycling over different timescales. Silicon isotope data of dissolved silica (?30SiDSi) are presented here from Lake Baikal and its catchment in central Siberia. As well as being the world's oldest and voluminous lake, Lake Baikal lies within the seventh largest drainage basin in the world and exports significant amounts of freshwater into the Arctic Ocean. Data from river waters accounting for c. 92% of annual river inflow to the lake suggest no seasonal alteration or anthropogenic impact on river ?30SiDSi composition. The absence of a change in ?30SiDSi within the Selenga Delta, through which 62% of riverine flow passes, suggest a net balance between biogenic uptake and dissolution in this system. A key feature of this study is the use of ?30SiDSi to examine seasonal and spatial variations in DSi utilisation and export across the lake. Using an open system model against deep water ?30SiDSi values from the lake, we estimate that 20-24% of DSi entering Lake Baikal is exported into the sediment record. Whilst highlighting the impact that lakes may have upon the sequestration of continental DSi, mixed layer ?30SiDSi values from 2003 and 2013 show significant spatial variability in the magnitude of spring bloom nutrient utilisation with lower rates in the north relative to south basin. Article in Journal/Newspaper Arctic Arctic Ocean Siberia University of Nottingham: Repository@Nottingham Arctic Arctic Ocean Global Biogeochemical Cycles 31 3 556 574 |
institution |
Open Polar |
collection |
University of Nottingham: Repository@Nottingham |
op_collection_id |
ftunnottinghamrr |
language |
unknown |
topic |
Silicon isotopes ?30SiDSi Lake Baikal Silicon export Biogeochemical cycling Diatoms |
spellingShingle |
Silicon isotopes ?30SiDSi Lake Baikal Silicon export Biogeochemical cycling Diatoms Panizzo, Virginia Swann, George E.A. Mackay, Anson W. Vologina, Elena Alleman, L. Andre, L. Pashley, Vanessa Horstwood, Matthew S.A. Constraining modern day silicon cycling in Lake Baikal |
topic_facet |
Silicon isotopes ?30SiDSi Lake Baikal Silicon export Biogeochemical cycling Diatoms |
description |
Constraining the continental silicon cycle is a key requirement in attempts to understand both nutrient fluxes to the ocean and linkages between silicon and carbon cycling over different timescales. Silicon isotope data of dissolved silica (?30SiDSi) are presented here from Lake Baikal and its catchment in central Siberia. As well as being the world's oldest and voluminous lake, Lake Baikal lies within the seventh largest drainage basin in the world and exports significant amounts of freshwater into the Arctic Ocean. Data from river waters accounting for c. 92% of annual river inflow to the lake suggest no seasonal alteration or anthropogenic impact on river ?30SiDSi composition. The absence of a change in ?30SiDSi within the Selenga Delta, through which 62% of riverine flow passes, suggest a net balance between biogenic uptake and dissolution in this system. A key feature of this study is the use of ?30SiDSi to examine seasonal and spatial variations in DSi utilisation and export across the lake. Using an open system model against deep water ?30SiDSi values from the lake, we estimate that 20-24% of DSi entering Lake Baikal is exported into the sediment record. Whilst highlighting the impact that lakes may have upon the sequestration of continental DSi, mixed layer ?30SiDSi values from 2003 and 2013 show significant spatial variability in the magnitude of spring bloom nutrient utilisation with lower rates in the north relative to south basin. |
format |
Article in Journal/Newspaper |
author |
Panizzo, Virginia Swann, George E.A. Mackay, Anson W. Vologina, Elena Alleman, L. Andre, L. Pashley, Vanessa Horstwood, Matthew S.A. |
author_facet |
Panizzo, Virginia Swann, George E.A. Mackay, Anson W. Vologina, Elena Alleman, L. Andre, L. Pashley, Vanessa Horstwood, Matthew S.A. |
author_sort |
Panizzo, Virginia |
title |
Constraining modern day silicon cycling in Lake Baikal |
title_short |
Constraining modern day silicon cycling in Lake Baikal |
title_full |
Constraining modern day silicon cycling in Lake Baikal |
title_fullStr |
Constraining modern day silicon cycling in Lake Baikal |
title_full_unstemmed |
Constraining modern day silicon cycling in Lake Baikal |
title_sort |
constraining modern day silicon cycling in lake baikal |
publisher |
American Geophysical Union |
publishDate |
2017 |
url |
https://doi.org/10.1002/2016GB005518 https://nottingham-repository.worktribe.com/file/851559/1/Panizzo_et_al-2017-Global_Biogeochemical_Cycles.pdf https://nottingham-repository.worktribe.com/output/851559 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Siberia |
genre_facet |
Arctic Arctic Ocean Siberia |
op_relation |
https://nottingham-repository.worktribe.com/output/851559 Global Biogeochemical Cycles Volume 31 Issue 3 doi:https://doi.org/10.1002/2016GB005518 https://nottingham-repository.worktribe.com/file/851559/1/Panizzo_et_al-2017-Global_Biogeochemical_Cycles.pdf 0886-6236 doi:10.1002/2016GB005518 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1002/2016GB005518 |
container_title |
Global Biogeochemical Cycles |
container_volume |
31 |
container_issue |
3 |
container_start_page |
556 |
op_container_end_page |
574 |
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