Phytoplankton composition derived from CHEMTAX along 10°E during POLARSTERN cruise ANT-XXVIII/3, Jan-March 2012
Phytoplankton community structure and their physiological response in the vicinity of the Antarctic Polar Front (APF; 44°S to 53°S, centred at 10°E) were investigated as part of the ANT-XXVIII/3 Eddy-Pump cruise conducted in austral summer 2012. Our results show that under iron-limited (< 0.3 µmo...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.866372 2023-05-15T13:58:14+02:00 Phytoplankton composition derived from CHEMTAX along 10°E during POLARSTERN cruise ANT-XXVIII/3, Jan-March 2012 Cheah, Wee Soppa, Mariana A Wiegmann, Sonja Ossebaar, Sharyn Laglera, Luis Miguel Strass, Volker H Santos-Echeandía, Juan Hoppema, Mario Wolf-Gladrow, Dieter A Bracher, Astrid MEDIAN LATITUDE: -49.007097 * MEDIAN LONGITUDE: 10.003562 * SOUTH-BOUND LATITUDE: -53.001830 * WEST-BOUND LONGITUDE: 9.982830 * NORTH-BOUND LATITUDE: -43.996000 * EAST-BOUND LONGITUDE: 10.024000 * DATE/TIME START: 2012-01-11T16:47:00 * DATE/TIME END: 2012-01-22T02:13:00 * MINIMUM DEPTH, water: 9.0 m * MAXIMUM DEPTH, water: 101.0 m 2016-10-17 text/tab-separated-values, 1090 data points https://doi.pangaea.de/10.1594/PANGAEA.866372 https://doi.org/10.1594/PANGAEA.866372 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.866372 https://doi.org/10.1594/PANGAEA.866372 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Cheah, Wee; Soppa, Mariana A; Wiegmann, Sonja; Ossebaar, Sharyn; Laglera, Luis Miguel; Strass, Volker H; Santos-Echeandía, Juan; Hoppema, Mario; Wolf-Gladrow, Dieter A; Bracher, Astrid (2016): Importance of deep mixing and silicic acid in regulating phytoplankton biomass and community in the iron-limited Antarctic Polar Front region in summer. Deep Sea Research Part II: Topical Studies in Oceanography, 12 pp, https://doi.org/10.1016/j.dsr2.2016.05.019 ANT-XXVIII/3 CHEMTAX (Lewitus et al. 2005) Chlorophytes Cryptophytes CTD/Rosette CTD-RO Cyanobacteria Date/Time of event DEPTH water Diatoms Dinoflagellates Elevation of event Event label Haptophytes In situ pump ISP Latitude of event Longitude of event Polarstern Prasinophytes PS79 PS79/057-4 PS79/060-5 PS79/061-1 PS79/062-1 PS79/063-2 PS79/064-1 PS79/065-1 PS79/066-1 PS79/068-1 PS79/069-4 PS79/070-3 PS79/073-2 PS79/074-1 PS79/075-9 PS79/076-2 PS79/077-1 PS79/078-1 PS79/079-1 PS79/080-1 PS79/081-11 PS79/081-5 PS79/082-1 PS79/083-1 PS79/084-9 South Atlantic Ocean Dataset 2016 ftpangaea https://doi.org/10.1594/PANGAEA.866372 https://doi.org/10.1016/j.dsr2.2016.05.019 2023-01-20T09:07:56Z Phytoplankton community structure and their physiological response in the vicinity of the Antarctic Polar Front (APF; 44°S to 53°S, centred at 10°E) were investigated as part of the ANT-XXVIII/3 Eddy-Pump cruise conducted in austral summer 2012. Our results show that under iron-limited (< 0.3 µmol/m**3) conditions, high total chlorophyll-a (TChl-a) concentrations (> 0.6 mg/m**3) can be observed at stations with deep mixed layer (> 60 m) across the APF. In contrast, light was excessive at stations with shallower mixed layer and phytoplankton were producing higher amounts of photoprotective pigments, diadinoxanthin (DD) and diatoxanthin (DT), at the expense of TChl-a, resulting in higher ratios of (DD+DT)/ TChl-a. North of the APF, significantly lower silicic acid (Si(OH)4) concentrations (< 2 mmol/m**3) lead to the domination of nanophytoplankton consisting mostly of haptophytes, which produced higher ratios of (DD+DT)/TChl-a under relatively low irradiance conditions. The Si(OH)4 replete (> 5 mmol/m**3) region south of the APF, on the contrary, was dominated by microphytoplankton (diatoms and dinoflagellates) with lower ratios of (DD+DT)/TChl-a, despite having been exposed to higher levels of irradiance. The significant correlation between nanophytoplankton and (DD+DT)/TChl-a indicates that differences in taxon-specific response to light are also influencing TChl-a concentration in the APF during summer. Our results reveal that provided mixing is deep and Si(OH)4 is replete, TChl-a concentrations higher than 0.6 mg/m**3 are achievable in the iron-limited APF waters during summer. Dataset Antarc* Antarctic South Atlantic Ocean PANGAEA - Data Publisher for Earth & Environmental Science Antarctic The Antarctic Austral ENVELOPE(9.982830,10.024000,-43.996000,-53.001830) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
ANT-XXVIII/3 CHEMTAX (Lewitus et al. 2005) Chlorophytes Cryptophytes CTD/Rosette CTD-RO Cyanobacteria Date/Time of event DEPTH water Diatoms Dinoflagellates Elevation of event Event label Haptophytes In situ pump ISP Latitude of event Longitude of event Polarstern Prasinophytes PS79 PS79/057-4 PS79/060-5 PS79/061-1 PS79/062-1 PS79/063-2 PS79/064-1 PS79/065-1 PS79/066-1 PS79/068-1 PS79/069-4 PS79/070-3 PS79/073-2 PS79/074-1 PS79/075-9 PS79/076-2 PS79/077-1 PS79/078-1 PS79/079-1 PS79/080-1 PS79/081-11 PS79/081-5 PS79/082-1 PS79/083-1 PS79/084-9 South Atlantic Ocean |
spellingShingle |
ANT-XXVIII/3 CHEMTAX (Lewitus et al. 2005) Chlorophytes Cryptophytes CTD/Rosette CTD-RO Cyanobacteria Date/Time of event DEPTH water Diatoms Dinoflagellates Elevation of event Event label Haptophytes In situ pump ISP Latitude of event Longitude of event Polarstern Prasinophytes PS79 PS79/057-4 PS79/060-5 PS79/061-1 PS79/062-1 PS79/063-2 PS79/064-1 PS79/065-1 PS79/066-1 PS79/068-1 PS79/069-4 PS79/070-3 PS79/073-2 PS79/074-1 PS79/075-9 PS79/076-2 PS79/077-1 PS79/078-1 PS79/079-1 PS79/080-1 PS79/081-11 PS79/081-5 PS79/082-1 PS79/083-1 PS79/084-9 South Atlantic Ocean Cheah, Wee Soppa, Mariana A Wiegmann, Sonja Ossebaar, Sharyn Laglera, Luis Miguel Strass, Volker H Santos-Echeandía, Juan Hoppema, Mario Wolf-Gladrow, Dieter A Bracher, Astrid Phytoplankton composition derived from CHEMTAX along 10°E during POLARSTERN cruise ANT-XXVIII/3, Jan-March 2012 |
topic_facet |
ANT-XXVIII/3 CHEMTAX (Lewitus et al. 2005) Chlorophytes Cryptophytes CTD/Rosette CTD-RO Cyanobacteria Date/Time of event DEPTH water Diatoms Dinoflagellates Elevation of event Event label Haptophytes In situ pump ISP Latitude of event Longitude of event Polarstern Prasinophytes PS79 PS79/057-4 PS79/060-5 PS79/061-1 PS79/062-1 PS79/063-2 PS79/064-1 PS79/065-1 PS79/066-1 PS79/068-1 PS79/069-4 PS79/070-3 PS79/073-2 PS79/074-1 PS79/075-9 PS79/076-2 PS79/077-1 PS79/078-1 PS79/079-1 PS79/080-1 PS79/081-11 PS79/081-5 PS79/082-1 PS79/083-1 PS79/084-9 South Atlantic Ocean |
description |
Phytoplankton community structure and their physiological response in the vicinity of the Antarctic Polar Front (APF; 44°S to 53°S, centred at 10°E) were investigated as part of the ANT-XXVIII/3 Eddy-Pump cruise conducted in austral summer 2012. Our results show that under iron-limited (< 0.3 µmol/m**3) conditions, high total chlorophyll-a (TChl-a) concentrations (> 0.6 mg/m**3) can be observed at stations with deep mixed layer (> 60 m) across the APF. In contrast, light was excessive at stations with shallower mixed layer and phytoplankton were producing higher amounts of photoprotective pigments, diadinoxanthin (DD) and diatoxanthin (DT), at the expense of TChl-a, resulting in higher ratios of (DD+DT)/ TChl-a. North of the APF, significantly lower silicic acid (Si(OH)4) concentrations (< 2 mmol/m**3) lead to the domination of nanophytoplankton consisting mostly of haptophytes, which produced higher ratios of (DD+DT)/TChl-a under relatively low irradiance conditions. The Si(OH)4 replete (> 5 mmol/m**3) region south of the APF, on the contrary, was dominated by microphytoplankton (diatoms and dinoflagellates) with lower ratios of (DD+DT)/TChl-a, despite having been exposed to higher levels of irradiance. The significant correlation between nanophytoplankton and (DD+DT)/TChl-a indicates that differences in taxon-specific response to light are also influencing TChl-a concentration in the APF during summer. Our results reveal that provided mixing is deep and Si(OH)4 is replete, TChl-a concentrations higher than 0.6 mg/m**3 are achievable in the iron-limited APF waters during summer. |
format |
Dataset |
author |
Cheah, Wee Soppa, Mariana A Wiegmann, Sonja Ossebaar, Sharyn Laglera, Luis Miguel Strass, Volker H Santos-Echeandía, Juan Hoppema, Mario Wolf-Gladrow, Dieter A Bracher, Astrid |
author_facet |
Cheah, Wee Soppa, Mariana A Wiegmann, Sonja Ossebaar, Sharyn Laglera, Luis Miguel Strass, Volker H Santos-Echeandía, Juan Hoppema, Mario Wolf-Gladrow, Dieter A Bracher, Astrid |
author_sort |
Cheah, Wee |
title |
Phytoplankton composition derived from CHEMTAX along 10°E during POLARSTERN cruise ANT-XXVIII/3, Jan-March 2012 |
title_short |
Phytoplankton composition derived from CHEMTAX along 10°E during POLARSTERN cruise ANT-XXVIII/3, Jan-March 2012 |
title_full |
Phytoplankton composition derived from CHEMTAX along 10°E during POLARSTERN cruise ANT-XXVIII/3, Jan-March 2012 |
title_fullStr |
Phytoplankton composition derived from CHEMTAX along 10°E during POLARSTERN cruise ANT-XXVIII/3, Jan-March 2012 |
title_full_unstemmed |
Phytoplankton composition derived from CHEMTAX along 10°E during POLARSTERN cruise ANT-XXVIII/3, Jan-March 2012 |
title_sort |
phytoplankton composition derived from chemtax along 10°e during polarstern cruise ant-xxviii/3, jan-march 2012 |
publisher |
PANGAEA |
publishDate |
2016 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.866372 https://doi.org/10.1594/PANGAEA.866372 |
op_coverage |
MEDIAN LATITUDE: -49.007097 * MEDIAN LONGITUDE: 10.003562 * SOUTH-BOUND LATITUDE: -53.001830 * WEST-BOUND LONGITUDE: 9.982830 * NORTH-BOUND LATITUDE: -43.996000 * EAST-BOUND LONGITUDE: 10.024000 * DATE/TIME START: 2012-01-11T16:47:00 * DATE/TIME END: 2012-01-22T02:13:00 * MINIMUM DEPTH, water: 9.0 m * MAXIMUM DEPTH, water: 101.0 m |
long_lat |
ENVELOPE(9.982830,10.024000,-43.996000,-53.001830) |
geographic |
Antarctic The Antarctic Austral |
geographic_facet |
Antarctic The Antarctic Austral |
genre |
Antarc* Antarctic South Atlantic Ocean |
genre_facet |
Antarc* Antarctic South Atlantic Ocean |
op_source |
Supplement to: Cheah, Wee; Soppa, Mariana A; Wiegmann, Sonja; Ossebaar, Sharyn; Laglera, Luis Miguel; Strass, Volker H; Santos-Echeandía, Juan; Hoppema, Mario; Wolf-Gladrow, Dieter A; Bracher, Astrid (2016): Importance of deep mixing and silicic acid in regulating phytoplankton biomass and community in the iron-limited Antarctic Polar Front region in summer. Deep Sea Research Part II: Topical Studies in Oceanography, 12 pp, https://doi.org/10.1016/j.dsr2.2016.05.019 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.866372 https://doi.org/10.1594/PANGAEA.866372 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.866372 https://doi.org/10.1016/j.dsr2.2016.05.019 |
_version_ |
1766266425195888640 |