Primary productivity measurements in the Ross Sea, Antarctica: a regional synthesis
Polar systems are undersampled due to the difficulty of sampling remote and challenging environments; however, these systems are critical components of global biogeochemical cycles. Measurements on primary productivity in specific areas can quantify the input of organic matter to food webs and so ar...
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Copernicus Publications
2022
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00061519 2023-05-15T13:49:21+02:00 Primary productivity measurements in the Ross Sea, Antarctica: a regional synthesis Smith Jr., Walker O. 2022-06 electronic https://doi.org/10.5194/essd-14-2737-2022 https://noa.gwlb.de/receive/cop_mods_00061519 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00060976/essd-14-2737-2022.pdf https://essd.copernicus.org/articles/14/2737/2022/essd-14-2737-2022.pdf eng eng Copernicus Publications Earth System Science Data -- http://www.earth-syst-sci-data.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2475469 -- 1866-3516 https://doi.org/10.5194/essd-14-2737-2022 https://noa.gwlb.de/receive/cop_mods_00061519 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00060976/essd-14-2737-2022.pdf https://essd.copernicus.org/articles/14/2737/2022/essd-14-2737-2022.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2022 ftnonlinearchiv https://doi.org/10.5194/essd-14-2737-2022 2022-06-19T23:11:41Z Polar systems are undersampled due to the difficulty of sampling remote and challenging environments; however, these systems are critical components of global biogeochemical cycles. Measurements on primary productivity in specific areas can quantify the input of organic matter to food webs and so are of critical ecological importance as well. However, long-term measurements using the same methodology are available only for a few polar systems. Primary productivity measurements using 14C-uptake incubations from the Ross Sea, Antarctica, are synthesized, along with chlorophyll concentrations at the same depths and locations. A total of 19 independent cruises were completed and 449 stations occupied where measurements of primary productivity (each with seven depths) were completed. The incubations used the same basic simulated in situ methodology for all. Integrated water column productivity for all stations averaged 1.10 ± 1.20 g C m−2 d−1, and the maximum was 13.1 g C m−2 d−1. Annual productivity calculated from the means throughout the growing season equalled 146 g C m−2 yr−1. The mean chlorophyll concentration in the euphotic zone (the 1 % irradiance level) was 2.85 ± 2.68 mg m−3 (maximum observed concentration was 19.1 mg m−3). Maximum photosynthetic rates above the 30 % isolume (normalized to chlorophyll) averaged 0.98 ± 0.71 mg C (mg chl)−1 h−1, similar to the maximum rate found in photosynthesis–irradiance measurements. Productivity measurements are consistent with the temporal patterns of biomass found previously, with biomass and productivity peaking in late December; mixed layers were at a minimum at this time as well. Estimates of plankton composition also suggest that pre-January productivity was largely driven by the haptophyte Phaeocystis antarctica and summer productivity by diatoms. The data set (https://doi.org/10.26008/1912/bco-dmo.863815.2, Smith, 2021) will be useful for a comparison to other Antarctic regions and provide a basis for refined bio-optical models of regional primary productivity ... Article in Journal/Newspaper Antarc* Antarctic Antarctica Ross Sea Niedersächsisches Online-Archiv NOA Antarctic Ross Sea Earth System Science Data 14 6 2737 2747 |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Smith Jr., Walker O. Primary productivity measurements in the Ross Sea, Antarctica: a regional synthesis |
topic_facet |
article Verlagsveröffentlichung |
description |
Polar systems are undersampled due to the difficulty of sampling remote and challenging environments; however, these systems are critical components of global biogeochemical cycles. Measurements on primary productivity in specific areas can quantify the input of organic matter to food webs and so are of critical ecological importance as well. However, long-term measurements using the same methodology are available only for a few polar systems. Primary productivity measurements using 14C-uptake incubations from the Ross Sea, Antarctica, are synthesized, along with chlorophyll concentrations at the same depths and locations. A total of 19 independent cruises were completed and 449 stations occupied where measurements of primary productivity (each with seven depths) were completed. The incubations used the same basic simulated in situ methodology for all. Integrated water column productivity for all stations averaged 1.10 ± 1.20 g C m−2 d−1, and the maximum was 13.1 g C m−2 d−1. Annual productivity calculated from the means throughout the growing season equalled 146 g C m−2 yr−1. The mean chlorophyll concentration in the euphotic zone (the 1 % irradiance level) was 2.85 ± 2.68 mg m−3 (maximum observed concentration was 19.1 mg m−3). Maximum photosynthetic rates above the 30 % isolume (normalized to chlorophyll) averaged 0.98 ± 0.71 mg C (mg chl)−1 h−1, similar to the maximum rate found in photosynthesis–irradiance measurements. Productivity measurements are consistent with the temporal patterns of biomass found previously, with biomass and productivity peaking in late December; mixed layers were at a minimum at this time as well. Estimates of plankton composition also suggest that pre-January productivity was largely driven by the haptophyte Phaeocystis antarctica and summer productivity by diatoms. The data set (https://doi.org/10.26008/1912/bco-dmo.863815.2, Smith, 2021) will be useful for a comparison to other Antarctic regions and provide a basis for refined bio-optical models of regional primary productivity ... |
format |
Article in Journal/Newspaper |
author |
Smith Jr., Walker O. |
author_facet |
Smith Jr., Walker O. |
author_sort |
Smith Jr., Walker O. |
title |
Primary productivity measurements in the Ross Sea, Antarctica: a regional synthesis |
title_short |
Primary productivity measurements in the Ross Sea, Antarctica: a regional synthesis |
title_full |
Primary productivity measurements in the Ross Sea, Antarctica: a regional synthesis |
title_fullStr |
Primary productivity measurements in the Ross Sea, Antarctica: a regional synthesis |
title_full_unstemmed |
Primary productivity measurements in the Ross Sea, Antarctica: a regional synthesis |
title_sort |
primary productivity measurements in the ross sea, antarctica: a regional synthesis |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/essd-14-2737-2022 https://noa.gwlb.de/receive/cop_mods_00061519 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00060976/essd-14-2737-2022.pdf https://essd.copernicus.org/articles/14/2737/2022/essd-14-2737-2022.pdf |
geographic |
Antarctic Ross Sea |
geographic_facet |
Antarctic Ross Sea |
genre |
Antarc* Antarctic Antarctica Ross Sea |
genre_facet |
Antarc* Antarctic Antarctica Ross Sea |
op_relation |
Earth System Science Data -- http://www.earth-syst-sci-data.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2475469 -- 1866-3516 https://doi.org/10.5194/essd-14-2737-2022 https://noa.gwlb.de/receive/cop_mods_00061519 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00060976/essd-14-2737-2022.pdf https://essd.copernicus.org/articles/14/2737/2022/essd-14-2737-2022.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/essd-14-2737-2022 |
container_title |
Earth System Science Data |
container_volume |
14 |
container_issue |
6 |
container_start_page |
2737 |
op_container_end_page |
2747 |
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1766251228057042944 |