Chlorophyll a, primary production and nutrients during POLARSTERN cruise ANT-XXVIII/2
The Antarctic Circumpolar Current has a high potential for primary production and carbon sequestration through the biological pump. In the current study, two large-scale blooms observed in 2012 during a cruise with R.V. Polarstern were investigated with respect to phytoplankton standing stocks, prim...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.878249 2024-09-15T17:43:38+00:00 Chlorophyll a, primary production and nutrients during POLARSTERN cruise ANT-XXVIII/2 Hoppe, Clara Jule Marie Klaas, Christine Ossebaar, Sharyn Soppa, Mariana A Cheah, Wee Laglera, Luis Miguel Santos-Echeandía, Juan Rost, Björn Wolf-Gladrow, Dieter A Bracher, Astrid Hoppema, Mario Strass, Volker H Trimborn, Scarlett MEDIAN LATITUDE: -50.680315 * MEDIAN LONGITUDE: -24.157957 * SOUTH-BOUND LATITUDE: -52.001000 * WEST-BOUND LONGITUDE: -39.411500 * NORTH-BOUND LATITUDE: -48.795830 * EAST-BOUND LONGITUDE: -7.998000 * DATE/TIME START: 2012-01-26T14:45:00 * DATE/TIME END: 2012-03-03T08:27:00 2017 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.878249 https://doi.org/10.1594/PANGAEA.878249 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.878249 https://doi.org/10.1594/PANGAEA.878249 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Hoppe, Clara Jule Marie; Klaas, Christine; Ossebaar, Sharyn; Soppa, Mariana A; Cheah, Wee; Laglera, Luis Miguel; Santos-Echeandía, Juan; Rost, Björn; Wolf-Gladrow, Dieter A; Bracher, Astrid; Hoppema, Mario; Strass, Volker H; Trimborn, Scarlett (2017): Controls of primary production in two phytoplankton blooms in the Antarctic Circumpolar Current. Deep Sea Research Part II: Topical Studies in Oceanography, 138, 63-73, https://doi.org/10.1016/j.dsr2.2015.10.005 dataset publication series 2017 ftpangaea https://doi.org/10.1594/PANGAEA.87824910.1016/j.dsr2.2015.10.005 2024-08-06T23:37:39Z The Antarctic Circumpolar Current has a high potential for primary production and carbon sequestration through the biological pump. In the current study, two large-scale blooms observed in 2012 during a cruise with R.V. Polarstern were investigated with respect to phytoplankton standing stocks, primary productivity and nutrient budgets. While net primary productivity was similar in both blooms, chlorophyll a -specific photosynthesis was more efficient in the bloom closer to the island of South Georgia (39 °W, 50 °S) compared to the open ocean bloom further east (12 °W, 51 °S). We did not find evidence for light being the driver of bloom dynamics as chlorophyll standing stocks up to 165 mg/m² developed despite mixed layers as deep as 90 m. Since the two bloom regions differ in their distance to shelf areas, potential sources of iron vary. Nutrient (nitrate, phosphate, silicate) deficits were similar in both areas despite different bloom ages, but their ratios indicated more pronounced iron limitation at 12 °W compared to 39 °W. While primarily the supply of iron and not the availability of light seemed to control onset and duration of the blooms, higher grazing pressure could have exerted a stronger control toward the declining phase of the blooms. Other/Unknown Material Antarc* Antarctic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-39.411500,-7.998000,-48.795830,-52.001000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
description |
The Antarctic Circumpolar Current has a high potential for primary production and carbon sequestration through the biological pump. In the current study, two large-scale blooms observed in 2012 during a cruise with R.V. Polarstern were investigated with respect to phytoplankton standing stocks, primary productivity and nutrient budgets. While net primary productivity was similar in both blooms, chlorophyll a -specific photosynthesis was more efficient in the bloom closer to the island of South Georgia (39 °W, 50 °S) compared to the open ocean bloom further east (12 °W, 51 °S). We did not find evidence for light being the driver of bloom dynamics as chlorophyll standing stocks up to 165 mg/m² developed despite mixed layers as deep as 90 m. Since the two bloom regions differ in their distance to shelf areas, potential sources of iron vary. Nutrient (nitrate, phosphate, silicate) deficits were similar in both areas despite different bloom ages, but their ratios indicated more pronounced iron limitation at 12 °W compared to 39 °W. While primarily the supply of iron and not the availability of light seemed to control onset and duration of the blooms, higher grazing pressure could have exerted a stronger control toward the declining phase of the blooms. |
format |
Other/Unknown Material |
author |
Hoppe, Clara Jule Marie Klaas, Christine Ossebaar, Sharyn Soppa, Mariana A Cheah, Wee Laglera, Luis Miguel Santos-Echeandía, Juan Rost, Björn Wolf-Gladrow, Dieter A Bracher, Astrid Hoppema, Mario Strass, Volker H Trimborn, Scarlett |
spellingShingle |
Hoppe, Clara Jule Marie Klaas, Christine Ossebaar, Sharyn Soppa, Mariana A Cheah, Wee Laglera, Luis Miguel Santos-Echeandía, Juan Rost, Björn Wolf-Gladrow, Dieter A Bracher, Astrid Hoppema, Mario Strass, Volker H Trimborn, Scarlett Chlorophyll a, primary production and nutrients during POLARSTERN cruise ANT-XXVIII/2 |
author_facet |
Hoppe, Clara Jule Marie Klaas, Christine Ossebaar, Sharyn Soppa, Mariana A Cheah, Wee Laglera, Luis Miguel Santos-Echeandía, Juan Rost, Björn Wolf-Gladrow, Dieter A Bracher, Astrid Hoppema, Mario Strass, Volker H Trimborn, Scarlett |
author_sort |
Hoppe, Clara Jule Marie |
title |
Chlorophyll a, primary production and nutrients during POLARSTERN cruise ANT-XXVIII/2 |
title_short |
Chlorophyll a, primary production and nutrients during POLARSTERN cruise ANT-XXVIII/2 |
title_full |
Chlorophyll a, primary production and nutrients during POLARSTERN cruise ANT-XXVIII/2 |
title_fullStr |
Chlorophyll a, primary production and nutrients during POLARSTERN cruise ANT-XXVIII/2 |
title_full_unstemmed |
Chlorophyll a, primary production and nutrients during POLARSTERN cruise ANT-XXVIII/2 |
title_sort |
chlorophyll a, primary production and nutrients during polarstern cruise ant-xxviii/2 |
publisher |
PANGAEA |
publishDate |
2017 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.878249 https://doi.org/10.1594/PANGAEA.878249 |
op_coverage |
MEDIAN LATITUDE: -50.680315 * MEDIAN LONGITUDE: -24.157957 * SOUTH-BOUND LATITUDE: -52.001000 * WEST-BOUND LONGITUDE: -39.411500 * NORTH-BOUND LATITUDE: -48.795830 * EAST-BOUND LONGITUDE: -7.998000 * DATE/TIME START: 2012-01-26T14:45:00 * DATE/TIME END: 2012-03-03T08:27:00 |
long_lat |
ENVELOPE(-39.411500,-7.998000,-48.795830,-52.001000) |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Supplement to: Hoppe, Clara Jule Marie; Klaas, Christine; Ossebaar, Sharyn; Soppa, Mariana A; Cheah, Wee; Laglera, Luis Miguel; Santos-Echeandía, Juan; Rost, Björn; Wolf-Gladrow, Dieter A; Bracher, Astrid; Hoppema, Mario; Strass, Volker H; Trimborn, Scarlett (2017): Controls of primary production in two phytoplankton blooms in the Antarctic Circumpolar Current. Deep Sea Research Part II: Topical Studies in Oceanography, 138, 63-73, https://doi.org/10.1016/j.dsr2.2015.10.005 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.878249 https://doi.org/10.1594/PANGAEA.878249 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.87824910.1016/j.dsr2.2015.10.005 |
_version_ |
1810490686468784128 |