Monthly Variation in the Macromolecular Composition of Phytoplankton Communities at Jang Bogo Station, Terra Nova Bay, Ross Sea
Organic carbon fixed by photosynthesis of phytoplankton during the polar growing period could be important for their survival and consumers during the long polar night. Differences in biochemical traits of phytoplankton between ice-free and polar night periods were investigated in biweekly water sam...
Published in: | Frontiers in Microbiology |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Frontiers Media SA
2021
|
Subjects: | |
Online Access: | http://dx.doi.org/10.3389/fmicb.2021.618999 https://www.frontiersin.org/articles/10.3389/fmicb.2021.618999/full |
id |
crfrontiers:10.3389/fmicb.2021.618999 |
---|---|
record_format |
openpolar |
spelling |
crfrontiers:10.3389/fmicb.2021.618999 2024-02-11T09:58:55+01:00 Monthly Variation in the Macromolecular Composition of Phytoplankton Communities at Jang Bogo Station, Terra Nova Bay, Ross Sea Kim, Kwanwoo Park, Jisoo Jo, Naeun Park, Sanghoon Yoo, Hyeju Kim, Jaehong Lee, Sang Heon 2021 http://dx.doi.org/10.3389/fmicb.2021.618999 https://www.frontiersin.org/articles/10.3389/fmicb.2021.618999/full unknown Frontiers Media SA https://creativecommons.org/licenses/by/4.0/ Frontiers in Microbiology volume 12 ISSN 1664-302X Microbiology (medical) Microbiology journal-article 2021 crfrontiers https://doi.org/10.3389/fmicb.2021.618999 2024-01-26T10:00:22Z Organic carbon fixed by photosynthesis of phytoplankton during the polar growing period could be important for their survival and consumers during the long polar night. Differences in biochemical traits of phytoplankton between ice-free and polar night periods were investigated in biweekly water samples obtained at the Korean “Jang Bogo Station” located in Terra Nova Bay, Antarctica. The average concentration of total Chl- a from phytoplankton dominated by micro-sized species from the entire sampling period was 0.32 μg L –1 (SD = ± 0.88 μg L –1 ), with the highest concentration of 4.29 μg L –1 in February and the lowest concentration of 0.01 μg L –1 during the ice-covered polar night (April–October) in 2015. The highest protein concentration coincided with the peak Chl- a concentration in February and decreased rapidly relative to the carbohydrate and lipid concentrations in the early part of polar night. Among the different biochemical components, carbohydrates were the predominant constituent, accounting for 69% (SD = ± 14%) of the total particulate organic matter (POM) during the entire study period. The carbohydrate contributions to the total POM markedly increased from 39 ± 8% during the ice-free period to 73 ± 9% during the polar night period. In comparison, while we found a significant negative correlation ( r 2 = 0.92, p < 0.01) between protein contributions and carbohydrate contributions, lipid contributions did not show any particular trend with relatively small temporal variations during the entire observation period. The substantial decrease in the average weight ratio of proteins to carbohydrates from the ice-free period (mean ± SD = 1.0 ± 0.3) to the ice-covered period (mean ± SD = 0.1 ± 0.1) indicates a preferential loss of nitrogen-based proteins compared to carbohydrates during the polar night period. Overall, the average food material (FM) concentration and calorific contents of FM in this study were within the range reported previously from the Southern Ocean. The results from this ... Article in Journal/Newspaper Antarc* Antarctica polar night Ross Sea Southern Ocean Frontiers (Publisher) Bogo ENVELOPE(9.783,9.783,63.095,63.095) Ross Sea Southern Ocean Terra Nova Bay Frontiers in Microbiology 12 |
institution |
Open Polar |
collection |
Frontiers (Publisher) |
op_collection_id |
crfrontiers |
language |
unknown |
topic |
Microbiology (medical) Microbiology |
spellingShingle |
Microbiology (medical) Microbiology Kim, Kwanwoo Park, Jisoo Jo, Naeun Park, Sanghoon Yoo, Hyeju Kim, Jaehong Lee, Sang Heon Monthly Variation in the Macromolecular Composition of Phytoplankton Communities at Jang Bogo Station, Terra Nova Bay, Ross Sea |
topic_facet |
Microbiology (medical) Microbiology |
description |
Organic carbon fixed by photosynthesis of phytoplankton during the polar growing period could be important for their survival and consumers during the long polar night. Differences in biochemical traits of phytoplankton between ice-free and polar night periods were investigated in biweekly water samples obtained at the Korean “Jang Bogo Station” located in Terra Nova Bay, Antarctica. The average concentration of total Chl- a from phytoplankton dominated by micro-sized species from the entire sampling period was 0.32 μg L –1 (SD = ± 0.88 μg L –1 ), with the highest concentration of 4.29 μg L –1 in February and the lowest concentration of 0.01 μg L –1 during the ice-covered polar night (April–October) in 2015. The highest protein concentration coincided with the peak Chl- a concentration in February and decreased rapidly relative to the carbohydrate and lipid concentrations in the early part of polar night. Among the different biochemical components, carbohydrates were the predominant constituent, accounting for 69% (SD = ± 14%) of the total particulate organic matter (POM) during the entire study period. The carbohydrate contributions to the total POM markedly increased from 39 ± 8% during the ice-free period to 73 ± 9% during the polar night period. In comparison, while we found a significant negative correlation ( r 2 = 0.92, p < 0.01) between protein contributions and carbohydrate contributions, lipid contributions did not show any particular trend with relatively small temporal variations during the entire observation period. The substantial decrease in the average weight ratio of proteins to carbohydrates from the ice-free period (mean ± SD = 1.0 ± 0.3) to the ice-covered period (mean ± SD = 0.1 ± 0.1) indicates a preferential loss of nitrogen-based proteins compared to carbohydrates during the polar night period. Overall, the average food material (FM) concentration and calorific contents of FM in this study were within the range reported previously from the Southern Ocean. The results from this ... |
format |
Article in Journal/Newspaper |
author |
Kim, Kwanwoo Park, Jisoo Jo, Naeun Park, Sanghoon Yoo, Hyeju Kim, Jaehong Lee, Sang Heon |
author_facet |
Kim, Kwanwoo Park, Jisoo Jo, Naeun Park, Sanghoon Yoo, Hyeju Kim, Jaehong Lee, Sang Heon |
author_sort |
Kim, Kwanwoo |
title |
Monthly Variation in the Macromolecular Composition of Phytoplankton Communities at Jang Bogo Station, Terra Nova Bay, Ross Sea |
title_short |
Monthly Variation in the Macromolecular Composition of Phytoplankton Communities at Jang Bogo Station, Terra Nova Bay, Ross Sea |
title_full |
Monthly Variation in the Macromolecular Composition of Phytoplankton Communities at Jang Bogo Station, Terra Nova Bay, Ross Sea |
title_fullStr |
Monthly Variation in the Macromolecular Composition of Phytoplankton Communities at Jang Bogo Station, Terra Nova Bay, Ross Sea |
title_full_unstemmed |
Monthly Variation in the Macromolecular Composition of Phytoplankton Communities at Jang Bogo Station, Terra Nova Bay, Ross Sea |
title_sort |
monthly variation in the macromolecular composition of phytoplankton communities at jang bogo station, terra nova bay, ross sea |
publisher |
Frontiers Media SA |
publishDate |
2021 |
url |
http://dx.doi.org/10.3389/fmicb.2021.618999 https://www.frontiersin.org/articles/10.3389/fmicb.2021.618999/full |
long_lat |
ENVELOPE(9.783,9.783,63.095,63.095) |
geographic |
Bogo Ross Sea Southern Ocean Terra Nova Bay |
geographic_facet |
Bogo Ross Sea Southern Ocean Terra Nova Bay |
genre |
Antarc* Antarctica polar night Ross Sea Southern Ocean |
genre_facet |
Antarc* Antarctica polar night Ross Sea Southern Ocean |
op_source |
Frontiers in Microbiology volume 12 ISSN 1664-302X |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/fmicb.2021.618999 |
container_title |
Frontiers in Microbiology |
container_volume |
12 |
_version_ |
1790594755330048000 |