Impact of Freshwater Discharge on the Carbon Uptake Rate of Phytoplankton During Summer (January–February 2019) in Marian Cove, King George Island, Antarctica
Rapidly changing conditions in high-latitude coastal systems can significantly impact biogeochemical cycles because these systems are strongly influenced by freshwater discharged from melting glaciers and streams on land. Generally, Antarctic coastal areas are considered high-productivity areas in w...
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Online Access: | http://dx.doi.org/10.3389/fmars.2021.725173 https://www.frontiersin.org/articles/10.3389/fmars.2021.725173/full |
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crfrontiers:10.3389/fmars.2021.725173 2024-09-15T17:41:53+00:00 Impact of Freshwater Discharge on the Carbon Uptake Rate of Phytoplankton During Summer (January–February 2019) in Marian Cove, King George Island, Antarctica Kim, Bo Kyung Jeon, Misa Joo, Hyoung Min Kim, Tae-Wan Park, Sang-Jong Park, Jisoo Ha, Sun-Yong 2021 http://dx.doi.org/10.3389/fmars.2021.725173 https://www.frontiersin.org/articles/10.3389/fmars.2021.725173/full unknown Frontiers Media SA https://creativecommons.org/licenses/by/4.0/ Frontiers in Marine Science volume 8 ISSN 2296-7745 journal-article 2021 crfrontiers https://doi.org/10.3389/fmars.2021.725173 2024-08-20T04:05:42Z Rapidly changing conditions in high-latitude coastal systems can significantly impact biogeochemical cycles because these systems are strongly influenced by freshwater discharged from melting glaciers and streams on land. Generally, Antarctic coastal areas are considered high-productivity areas in which phytoplankton growth prevails under various environmental conditions (e.g., oceanographic and meteorological conditions). This study provides carbon uptake rates of phytoplankton in Marian Cove during summer (January-February 2019). Daily depth-integrated carbon uptake varied greatly and averaged 0.8 g C m –2 day –1 , with a maximum of 4.52 mg g C m –2 day –1 recorded on 14 January. Similarly, the observed biomass standing stocks were very high (up to 19.5 mg m –3 chlorophyll a ) and were dominated by microphytoplankton (20–200 μm), representing 84% of total chlorophyll a (chl- a ). The depth-integrated chl- a and carbon uptake decreased from outer to inner areas (close to the glacial front) in the cove. As the austral summer progressed, the freshening of the surface waters coincided with high water stability and suspended material and with low productivity when nanophytoplankton were present (2–20 μm; >60%). These findings suggest that both photosynthetically active radiation penetrating the water column and enhanced turbidity control light availability for phytoplankton, as well as their community compositions. Article in Journal/Newspaper Antarc* Antarctic Antarctica King George Island Frontiers (Publisher) Frontiers in Marine Science 8 |
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Rapidly changing conditions in high-latitude coastal systems can significantly impact biogeochemical cycles because these systems are strongly influenced by freshwater discharged from melting glaciers and streams on land. Generally, Antarctic coastal areas are considered high-productivity areas in which phytoplankton growth prevails under various environmental conditions (e.g., oceanographic and meteorological conditions). This study provides carbon uptake rates of phytoplankton in Marian Cove during summer (January-February 2019). Daily depth-integrated carbon uptake varied greatly and averaged 0.8 g C m –2 day –1 , with a maximum of 4.52 mg g C m –2 day –1 recorded on 14 January. Similarly, the observed biomass standing stocks were very high (up to 19.5 mg m –3 chlorophyll a ) and were dominated by microphytoplankton (20–200 μm), representing 84% of total chlorophyll a (chl- a ). The depth-integrated chl- a and carbon uptake decreased from outer to inner areas (close to the glacial front) in the cove. As the austral summer progressed, the freshening of the surface waters coincided with high water stability and suspended material and with low productivity when nanophytoplankton were present (2–20 μm; >60%). These findings suggest that both photosynthetically active radiation penetrating the water column and enhanced turbidity control light availability for phytoplankton, as well as their community compositions. |
format |
Article in Journal/Newspaper |
author |
Kim, Bo Kyung Jeon, Misa Joo, Hyoung Min Kim, Tae-Wan Park, Sang-Jong Park, Jisoo Ha, Sun-Yong |
spellingShingle |
Kim, Bo Kyung Jeon, Misa Joo, Hyoung Min Kim, Tae-Wan Park, Sang-Jong Park, Jisoo Ha, Sun-Yong Impact of Freshwater Discharge on the Carbon Uptake Rate of Phytoplankton During Summer (January–February 2019) in Marian Cove, King George Island, Antarctica |
author_facet |
Kim, Bo Kyung Jeon, Misa Joo, Hyoung Min Kim, Tae-Wan Park, Sang-Jong Park, Jisoo Ha, Sun-Yong |
author_sort |
Kim, Bo Kyung |
title |
Impact of Freshwater Discharge on the Carbon Uptake Rate of Phytoplankton During Summer (January–February 2019) in Marian Cove, King George Island, Antarctica |
title_short |
Impact of Freshwater Discharge on the Carbon Uptake Rate of Phytoplankton During Summer (January–February 2019) in Marian Cove, King George Island, Antarctica |
title_full |
Impact of Freshwater Discharge on the Carbon Uptake Rate of Phytoplankton During Summer (January–February 2019) in Marian Cove, King George Island, Antarctica |
title_fullStr |
Impact of Freshwater Discharge on the Carbon Uptake Rate of Phytoplankton During Summer (January–February 2019) in Marian Cove, King George Island, Antarctica |
title_full_unstemmed |
Impact of Freshwater Discharge on the Carbon Uptake Rate of Phytoplankton During Summer (January–February 2019) in Marian Cove, King George Island, Antarctica |
title_sort |
impact of freshwater discharge on the carbon uptake rate of phytoplankton during summer (january–february 2019) in marian cove, king george island, antarctica |
publisher |
Frontiers Media SA |
publishDate |
2021 |
url |
http://dx.doi.org/10.3389/fmars.2021.725173 https://www.frontiersin.org/articles/10.3389/fmars.2021.725173/full |
genre |
Antarc* Antarctic Antarctica King George Island |
genre_facet |
Antarc* Antarctic Antarctica King George Island |
op_source |
Frontiers in Marine Science volume 8 ISSN 2296-7745 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/fmars.2021.725173 |
container_title |
Frontiers in Marine Science |
container_volume |
8 |
_version_ |
1810488167744143360 |