C : N : P stoichiometry at the Bermuda Atlantic Time-series Study station in the North Atlantic Ocean
Nitrogen (N) and phosphorus (P) availability, in addition to other macro- and micronutrients, determine the strength of the ocean's carbon (C) uptake, and variation in the N : P ratio of inorganic nutrient pools is key to phytoplankton growth. A similarity between C : N : P ratios in the plankt...
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ftdoajarticles:oai:doaj.org/article:8396a470f1854a1ab845c621e805f602 2023-05-15T17:32:36+02:00 C : N : P stoichiometry at the Bermuda Atlantic Time-series Study station in the North Atlantic Ocean A. Singh S. E. Baer U. Riebesell A. C. Martiny M. W. Lomas 2015-11-01T00:00:00Z https://doi.org/10.5194/bg-12-6389-2015 https://doaj.org/article/8396a470f1854a1ab845c621e805f602 EN eng Copernicus Publications http://www.biogeosciences.net/12/6389/2015/bg-12-6389-2015.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 doi:10.5194/bg-12-6389-2015 https://doaj.org/article/8396a470f1854a1ab845c621e805f602 Biogeosciences, Vol 12, Iss 21, Pp 6389-6403 (2015) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2015 ftdoajarticles https://doi.org/10.5194/bg-12-6389-2015 2022-12-31T08:15:51Z Nitrogen (N) and phosphorus (P) availability, in addition to other macro- and micronutrients, determine the strength of the ocean's carbon (C) uptake, and variation in the N : P ratio of inorganic nutrient pools is key to phytoplankton growth. A similarity between C : N : P ratios in the plankton biomass and deep-water nutrients was observed by Alfred C. Redfield around 80 years ago and suggested that biological processes in the surface ocean controlled deep-ocean chemistry. Recent studies have emphasized the role of inorganic N : P ratios in governing biogeochemical processes, particularly the C : N : P ratio in suspended particulate organic matter (POM), with somewhat less attention given to exported POM and dissolved organic matter (DOM). Herein, we extend the discussion on ecosystem C : N : P stoichiometry but also examine temporal variation in stoichiometric relationships. We have analyzed elemental stoichiometry in the suspended POM and total (POM + DOM) organic-matter (TOM) pools in the upper 100 m and in the exported POM and subeuphotic zone (100–500 m) inorganic nutrient pools from the monthly data collected at the Bermuda Atlantic Time-series Study (BATS) site located in the western part of the North Atlantic Ocean. C : N and N : P ratios in TOM were at least twice those in the POM, while C : P ratios were up to 5 times higher in TOM compared to those in the POM. Observed C : N ratios in suspended POM were approximately equal to the canonical Redfield ratio (C : N : P = 106 : 16 : 1), while N : P and C : P ratios in the same pool were more than twice the Redfield ratio. Average N : P ratios in the subsurface inorganic nutrient pool were ~ 26 : 1, squarely between the suspended POM ratio and the Redfield ratio. We have further linked variation in elemental stoichiometry to that of phytoplankton cell abundance observed at the BATS site. Findings from this study suggest that elemental ratios vary with depth in the euphotic zone, mainly due to different growth rates of cyanobacterial cells. We have also ... Article in Journal/Newspaper North Atlantic Directory of Open Access Journals: DOAJ Articles Biogeosciences 12 21 6389 6403 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
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Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 A. Singh S. E. Baer U. Riebesell A. C. Martiny M. W. Lomas C : N : P stoichiometry at the Bermuda Atlantic Time-series Study station in the North Atlantic Ocean |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
Nitrogen (N) and phosphorus (P) availability, in addition to other macro- and micronutrients, determine the strength of the ocean's carbon (C) uptake, and variation in the N : P ratio of inorganic nutrient pools is key to phytoplankton growth. A similarity between C : N : P ratios in the plankton biomass and deep-water nutrients was observed by Alfred C. Redfield around 80 years ago and suggested that biological processes in the surface ocean controlled deep-ocean chemistry. Recent studies have emphasized the role of inorganic N : P ratios in governing biogeochemical processes, particularly the C : N : P ratio in suspended particulate organic matter (POM), with somewhat less attention given to exported POM and dissolved organic matter (DOM). Herein, we extend the discussion on ecosystem C : N : P stoichiometry but also examine temporal variation in stoichiometric relationships. We have analyzed elemental stoichiometry in the suspended POM and total (POM + DOM) organic-matter (TOM) pools in the upper 100 m and in the exported POM and subeuphotic zone (100–500 m) inorganic nutrient pools from the monthly data collected at the Bermuda Atlantic Time-series Study (BATS) site located in the western part of the North Atlantic Ocean. C : N and N : P ratios in TOM were at least twice those in the POM, while C : P ratios were up to 5 times higher in TOM compared to those in the POM. Observed C : N ratios in suspended POM were approximately equal to the canonical Redfield ratio (C : N : P = 106 : 16 : 1), while N : P and C : P ratios in the same pool were more than twice the Redfield ratio. Average N : P ratios in the subsurface inorganic nutrient pool were ~ 26 : 1, squarely between the suspended POM ratio and the Redfield ratio. We have further linked variation in elemental stoichiometry to that of phytoplankton cell abundance observed at the BATS site. Findings from this study suggest that elemental ratios vary with depth in the euphotic zone, mainly due to different growth rates of cyanobacterial cells. We have also ... |
format |
Article in Journal/Newspaper |
author |
A. Singh S. E. Baer U. Riebesell A. C. Martiny M. W. Lomas |
author_facet |
A. Singh S. E. Baer U. Riebesell A. C. Martiny M. W. Lomas |
author_sort |
A. Singh |
title |
C : N : P stoichiometry at the Bermuda Atlantic Time-series Study station in the North Atlantic Ocean |
title_short |
C : N : P stoichiometry at the Bermuda Atlantic Time-series Study station in the North Atlantic Ocean |
title_full |
C : N : P stoichiometry at the Bermuda Atlantic Time-series Study station in the North Atlantic Ocean |
title_fullStr |
C : N : P stoichiometry at the Bermuda Atlantic Time-series Study station in the North Atlantic Ocean |
title_full_unstemmed |
C : N : P stoichiometry at the Bermuda Atlantic Time-series Study station in the North Atlantic Ocean |
title_sort |
c : n : p stoichiometry at the bermuda atlantic time-series study station in the north atlantic ocean |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://doi.org/10.5194/bg-12-6389-2015 https://doaj.org/article/8396a470f1854a1ab845c621e805f602 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Biogeosciences, Vol 12, Iss 21, Pp 6389-6403 (2015) |
op_relation |
http://www.biogeosciences.net/12/6389/2015/bg-12-6389-2015.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 doi:10.5194/bg-12-6389-2015 https://doaj.org/article/8396a470f1854a1ab845c621e805f602 |
op_doi |
https://doi.org/10.5194/bg-12-6389-2015 |
container_title |
Biogeosciences |
container_volume |
12 |
container_issue |
21 |
container_start_page |
6389 |
op_container_end_page |
6403 |
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1766130800663724032 |