Fluxes of carbon and nutrients to the Iceland Sea surface layer and inferred primary productivity and stoichiometry
This study evaluates long-term mean fluxes of carbon and nutrients to the upper 100 m of the Iceland Sea. The study utilises hydro-chemical data from the Iceland Sea time series station (68.00° N, 12.67° W), for the years between 1993 and 2006. By comparing data of dissolved inorganic carbon (DIC) a...
Published in: | Biogeosciences |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2015
|
Subjects: | |
Online Access: | https://doi.org/10.5194/bg-12-875-2015 https://doaj.org/article/32f945d38ce14fa79ba6f9199069f9b8 |
id |
ftdoajarticles:oai:doaj.org/article:32f945d38ce14fa79ba6f9199069f9b8 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:32f945d38ce14fa79ba6f9199069f9b8 2023-05-15T16:47:18+02:00 Fluxes of carbon and nutrients to the Iceland Sea surface layer and inferred primary productivity and stoichiometry E. Jeansson R. G. J. Bellerby I. Skjelvan H. Frigstad S. R. Ólafsdóttir J. Olafsson 2015-02-01T00:00:00Z https://doi.org/10.5194/bg-12-875-2015 https://doaj.org/article/32f945d38ce14fa79ba6f9199069f9b8 EN eng Copernicus Publications http://www.biogeosciences.net/12/875/2015/bg-12-875-2015.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 doi:10.5194/bg-12-875-2015 https://doaj.org/article/32f945d38ce14fa79ba6f9199069f9b8 Biogeosciences, Vol 12, Iss 3, Pp 875-885 (2015) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2015 ftdoajarticles https://doi.org/10.5194/bg-12-875-2015 2022-12-30T23:35:41Z This study evaluates long-term mean fluxes of carbon and nutrients to the upper 100 m of the Iceland Sea. The study utilises hydro-chemical data from the Iceland Sea time series station (68.00° N, 12.67° W), for the years between 1993 and 2006. By comparing data of dissolved inorganic carbon (DIC) and nutrients in the surface layer (upper 100 m), and a sub-surface layer (100–200 m), we calculate monthly deficits in the surface, and use these to deduce the long-term mean surface layer fluxes that affect the deficits: vertical mixing, horizontal advection, air–sea exchange, and biological activity. The deficits show a clear seasonality with a minimum in winter, when the mixed layer is at the deepest, and a maximum in early autumn, when biological uptake has removed much of the nutrients. The annual vertical fluxes of DIC and nitrate amounts to 2.9 ± 0.5 and 0.45 ± 0.09 mol m −2 yr −1 , respectively, and the annual air–sea uptake of atmospheric CO 2 is 4.4 ± 1.1 mol C m −2 yr −1 . The biologically driven changes in DIC during the year relates to net community production (NCP), and the net annual NCP corresponds to export production, and is here calculated as 7.3 ± 1.0 mol C m −2 yr −1 . The typical, median C : N ratio during the period of net community uptake is 9.0, and clearly higher than the Redfield ratio, but is varying during the season. Article in Journal/Newspaper Iceland Directory of Open Access Journals: DOAJ Articles Biogeosciences 12 3 875 885 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 E. Jeansson R. G. J. Bellerby I. Skjelvan H. Frigstad S. R. Ólafsdóttir J. Olafsson Fluxes of carbon and nutrients to the Iceland Sea surface layer and inferred primary productivity and stoichiometry |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
This study evaluates long-term mean fluxes of carbon and nutrients to the upper 100 m of the Iceland Sea. The study utilises hydro-chemical data from the Iceland Sea time series station (68.00° N, 12.67° W), for the years between 1993 and 2006. By comparing data of dissolved inorganic carbon (DIC) and nutrients in the surface layer (upper 100 m), and a sub-surface layer (100–200 m), we calculate monthly deficits in the surface, and use these to deduce the long-term mean surface layer fluxes that affect the deficits: vertical mixing, horizontal advection, air–sea exchange, and biological activity. The deficits show a clear seasonality with a minimum in winter, when the mixed layer is at the deepest, and a maximum in early autumn, when biological uptake has removed much of the nutrients. The annual vertical fluxes of DIC and nitrate amounts to 2.9 ± 0.5 and 0.45 ± 0.09 mol m −2 yr −1 , respectively, and the annual air–sea uptake of atmospheric CO 2 is 4.4 ± 1.1 mol C m −2 yr −1 . The biologically driven changes in DIC during the year relates to net community production (NCP), and the net annual NCP corresponds to export production, and is here calculated as 7.3 ± 1.0 mol C m −2 yr −1 . The typical, median C : N ratio during the period of net community uptake is 9.0, and clearly higher than the Redfield ratio, but is varying during the season. |
format |
Article in Journal/Newspaper |
author |
E. Jeansson R. G. J. Bellerby I. Skjelvan H. Frigstad S. R. Ólafsdóttir J. Olafsson |
author_facet |
E. Jeansson R. G. J. Bellerby I. Skjelvan H. Frigstad S. R. Ólafsdóttir J. Olafsson |
author_sort |
E. Jeansson |
title |
Fluxes of carbon and nutrients to the Iceland Sea surface layer and inferred primary productivity and stoichiometry |
title_short |
Fluxes of carbon and nutrients to the Iceland Sea surface layer and inferred primary productivity and stoichiometry |
title_full |
Fluxes of carbon and nutrients to the Iceland Sea surface layer and inferred primary productivity and stoichiometry |
title_fullStr |
Fluxes of carbon and nutrients to the Iceland Sea surface layer and inferred primary productivity and stoichiometry |
title_full_unstemmed |
Fluxes of carbon and nutrients to the Iceland Sea surface layer and inferred primary productivity and stoichiometry |
title_sort |
fluxes of carbon and nutrients to the iceland sea surface layer and inferred primary productivity and stoichiometry |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://doi.org/10.5194/bg-12-875-2015 https://doaj.org/article/32f945d38ce14fa79ba6f9199069f9b8 |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
Biogeosciences, Vol 12, Iss 3, Pp 875-885 (2015) |
op_relation |
http://www.biogeosciences.net/12/875/2015/bg-12-875-2015.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 doi:10.5194/bg-12-875-2015 https://doaj.org/article/32f945d38ce14fa79ba6f9199069f9b8 |
op_doi |
https://doi.org/10.5194/bg-12-875-2015 |
container_title |
Biogeosciences |
container_volume |
12 |
container_issue |
3 |
container_start_page |
875 |
op_container_end_page |
885 |
_version_ |
1766037396857552896 |