Respiration, mineralization, and biochemical properties of the particulate matter in the southern Nansen Basin water column in April 1981
12 pages, 4 figures, 5 tables Determinations of the activity of the respiratory electron transport system (ETS), during the FRAM III expedition permit us to estimate oxygen utilization rates (RO2) from the surface to 2000 m under the polar pack ice in the Nansen Basin just north of Svalbard (83°N, 7...
Published in: | Deep Sea Research Part I: Oceanographic Research Papers |
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Pergamon Press
2007
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Online Access: | http://hdl.handle.net/10261/108240 https://doi.org/10.1016/j.dsr.2006.12.008 |
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ftcsic:oai:digital.csic.es:10261/108240 2024-02-11T10:01:02+01:00 Respiration, mineralization, and biochemical properties of the particulate matter in the southern Nansen Basin water column in April 1981 Packard, Theodore T. Codispoti, L.A. 2007-03 http://hdl.handle.net/10261/108240 https://doi.org/10.1016/j.dsr.2006.12.008 unknown Pergamon Press https://doi.org/10.1016/j.dsr.2006.12.008 doi:10.1016/j.dsr.2006.12.008 issn: 0967-0637 e-issn: 1879-0119 Deep-Sea Research Part I: Oceanographic Research Papers 54(3): 403-414 (2007) http://hdl.handle.net/10261/108240 none Arctic Ocean Biogeochemical cycling 61E to 851N Nutrient remineralization Respiration Nansen Basin 801N-101E ETS artículo http://purl.org/coar/resource_type/c_6501 2007 ftcsic https://doi.org/10.1016/j.dsr.2006.12.008 2024-01-16T10:04:02Z 12 pages, 4 figures, 5 tables Determinations of the activity of the respiratory electron transport system (ETS), during the FRAM III expedition permit us to estimate oxygen utilization rates (RO2) from the surface to 2000 m under the polar pack ice in the Nansen Basin just north of Svalbard (83°N, 7°E) during April 1981. We found RO2 at in situ temperatures ranging from 20 pM O2 min-1 just below the ice to 0.2 pM O2 min-1 at 2000 m. These rates are low compared to most other ocean regions, but they could decrease particulate organic carbon and nitrogen by 76% and 74%, respectively, over a period of ∼6 months. The RO2 calculations based on measurements made at 0 °C yielded a power function of RO2 vs. depth (Z) of RO2=67Z-0.5534. When this RO2 profile was superimposed on a more recent oxygen utilization rate profile made using the 3He-3H-AOU method (OUR), in the same vicinity of the Nansen Basin during 1987 (OUR=52Z-0.4058, [Zheng, Y., Schlosser, P., Swift, J.W., Jones, E.P., 1997. Oxygen utilization rates in the Nansen Basin, Arctic Ocean: implications for new production. Deep Sea Research I 44, 1923-1943]), the agreement of the two profiles was close. On one hand, this was to be expected because RO2 is the biological basis of OUR, on the other hand, it was a surprise because the methodologies are so different. Nitrate mineralization obtained from ETS activities also compared favorably with calculations based on the data of Zheng et al. [1997. Oxygen utilization rates in the Nansen Basin, Arctic Ocean: implications for new production. Deep Sea Research I 44, 1923-1943]. Chlorophyll ranged from 6 ng L-1 at 5 m to 0.06 ng L-1 at 2000 m. Particulate organic carbon (POC) decreased from 0.93 μM C just below the ice to less than 0.4 μM C at 500 m. Particulate organic nitrogen (PON) was not detectable below 70 m, however in the upper 70 m it ranged from 0.16 to 0.04 μM N. The C/N mass ratio over these depths ranged from 5.8 to 11.3. Annual carbon productivity as calculated to balance the total water column respiration ... Article in Journal/Newspaper Arctic Arctic Ocean Nansen Basin Svalbard Digital.CSIC (Spanish National Research Council) Arctic Arctic Ocean Svalbard Deep Sea Research Part I: Oceanographic Research Papers 54 3 403 414 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
unknown |
topic |
Arctic Ocean Biogeochemical cycling 61E to 851N Nutrient remineralization Respiration Nansen Basin 801N-101E ETS |
spellingShingle |
Arctic Ocean Biogeochemical cycling 61E to 851N Nutrient remineralization Respiration Nansen Basin 801N-101E ETS Packard, Theodore T. Codispoti, L.A. Respiration, mineralization, and biochemical properties of the particulate matter in the southern Nansen Basin water column in April 1981 |
topic_facet |
Arctic Ocean Biogeochemical cycling 61E to 851N Nutrient remineralization Respiration Nansen Basin 801N-101E ETS |
description |
12 pages, 4 figures, 5 tables Determinations of the activity of the respiratory electron transport system (ETS), during the FRAM III expedition permit us to estimate oxygen utilization rates (RO2) from the surface to 2000 m under the polar pack ice in the Nansen Basin just north of Svalbard (83°N, 7°E) during April 1981. We found RO2 at in situ temperatures ranging from 20 pM O2 min-1 just below the ice to 0.2 pM O2 min-1 at 2000 m. These rates are low compared to most other ocean regions, but they could decrease particulate organic carbon and nitrogen by 76% and 74%, respectively, over a period of ∼6 months. The RO2 calculations based on measurements made at 0 °C yielded a power function of RO2 vs. depth (Z) of RO2=67Z-0.5534. When this RO2 profile was superimposed on a more recent oxygen utilization rate profile made using the 3He-3H-AOU method (OUR), in the same vicinity of the Nansen Basin during 1987 (OUR=52Z-0.4058, [Zheng, Y., Schlosser, P., Swift, J.W., Jones, E.P., 1997. Oxygen utilization rates in the Nansen Basin, Arctic Ocean: implications for new production. Deep Sea Research I 44, 1923-1943]), the agreement of the two profiles was close. On one hand, this was to be expected because RO2 is the biological basis of OUR, on the other hand, it was a surprise because the methodologies are so different. Nitrate mineralization obtained from ETS activities also compared favorably with calculations based on the data of Zheng et al. [1997. Oxygen utilization rates in the Nansen Basin, Arctic Ocean: implications for new production. Deep Sea Research I 44, 1923-1943]. Chlorophyll ranged from 6 ng L-1 at 5 m to 0.06 ng L-1 at 2000 m. Particulate organic carbon (POC) decreased from 0.93 μM C just below the ice to less than 0.4 μM C at 500 m. Particulate organic nitrogen (PON) was not detectable below 70 m, however in the upper 70 m it ranged from 0.16 to 0.04 μM N. The C/N mass ratio over these depths ranged from 5.8 to 11.3. Annual carbon productivity as calculated to balance the total water column respiration ... |
format |
Article in Journal/Newspaper |
author |
Packard, Theodore T. Codispoti, L.A. |
author_facet |
Packard, Theodore T. Codispoti, L.A. |
author_sort |
Packard, Theodore T. |
title |
Respiration, mineralization, and biochemical properties of the particulate matter in the southern Nansen Basin water column in April 1981 |
title_short |
Respiration, mineralization, and biochemical properties of the particulate matter in the southern Nansen Basin water column in April 1981 |
title_full |
Respiration, mineralization, and biochemical properties of the particulate matter in the southern Nansen Basin water column in April 1981 |
title_fullStr |
Respiration, mineralization, and biochemical properties of the particulate matter in the southern Nansen Basin water column in April 1981 |
title_full_unstemmed |
Respiration, mineralization, and biochemical properties of the particulate matter in the southern Nansen Basin water column in April 1981 |
title_sort |
respiration, mineralization, and biochemical properties of the particulate matter in the southern nansen basin water column in april 1981 |
publisher |
Pergamon Press |
publishDate |
2007 |
url |
http://hdl.handle.net/10261/108240 https://doi.org/10.1016/j.dsr.2006.12.008 |
geographic |
Arctic Arctic Ocean Svalbard |
geographic_facet |
Arctic Arctic Ocean Svalbard |
genre |
Arctic Arctic Ocean Nansen Basin Svalbard |
genre_facet |
Arctic Arctic Ocean Nansen Basin Svalbard |
op_relation |
https://doi.org/10.1016/j.dsr.2006.12.008 doi:10.1016/j.dsr.2006.12.008 issn: 0967-0637 e-issn: 1879-0119 Deep-Sea Research Part I: Oceanographic Research Papers 54(3): 403-414 (2007) http://hdl.handle.net/10261/108240 |
op_rights |
none |
op_doi |
https://doi.org/10.1016/j.dsr.2006.12.008 |
container_title |
Deep Sea Research Part I: Oceanographic Research Papers |
container_volume |
54 |
container_issue |
3 |
container_start_page |
403 |
op_container_end_page |
414 |
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1790596763469479936 |