Variability of chlorophyll-a and diatoms in the frontal ecosystem of Indian Ocean sector of the Southern Ocean
Abstract Phytoplankton composition plays a major role in biogeochemical cycles of the ocean. The intensity of carbon fixation and export is strongly dependent on the phytoplankton community. Yet, the contribution of different types of phytoplankton to the total production on various communities is s...
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crdegruyter:10.1515/popore-2017-0014 2023-05-15T14:13:15+02:00 Variability of chlorophyll-a and diatoms in the frontal ecosystem of Indian Ocean sector of the Southern Ocean Rajani Kanta, Mishra Babula, Jena Anilkumar, Narayana Pillai Ravidas Krishna, Naik Venkateswaran Bhaskar, Parli Melena A, Soares 2017 http://dx.doi.org/10.1515/popore-2017-0014 http://content.sciendo.com/view/journals/popore/38/3/article-p375.xml http://www.degruyter.com/view/j/popore.2017.38.issue-3/popore-2017-0014/popore-2017-0014.pdf unknown Walter de Gruyter GmbH http://creativecommons.org/licenses/by-nc-nd/3.0 CC-BY-NC-ND Polish Polar Research volume 38, issue 3, page 375-392 ISSN 2081-8262 Ecology Ecology, Evolution, Behavior and Systematics journal-article 2017 crdegruyter https://doi.org/10.1515/popore-2017-0014 2022-06-16T13:42:05Z Abstract Phytoplankton composition plays a major role in biogeochemical cycles of the ocean. The intensity of carbon fixation and export is strongly dependent on the phytoplankton community. Yet, the contribution of different types of phytoplankton to the total production on various communities is still poorly understood in the Indian Ocean sector of Southern Ocean (SO). Therefore the variability of chlorophyll- a ( Chl-a ) and diatoms in the frontal ecosystems of the Indian sector of SO have been investigated along with the sea surface temperature (SST), sea surface wind (SSW), photosynthetically active radiation (PAR), and nutrients datasets for the period of 1998–2012. Combined analysis of in-situ , model and satellite observations indicate that the variability of Chl-a and diatoms were primarily influenced by light and wind. The Chl-a was higher at the sub-Antarctic front (SAF) followed by the sub-tropical front (STF) and the polar front (PF). The diatom concentration was higher at the SAF followed by the PF and STF. Maximum concentration of Chl-a and diatoms commonly observed at the SAF region are probably due to the moderate PAR, SST and wind. Dominance of diatoms at the PF may be attributed to their adaptability for low light conditions. The results from this study in the frontal ecosystems would help to understand the biogeochemical cycle of the Indian sector of the SO. Article in Journal/Newspaper Antarc* Antarctic Polar Research Southern Ocean De Gruyter (via Crossref) Antarctic Southern Ocean Indian Polish Polar Research 38 3 375 392 |
institution |
Open Polar |
collection |
De Gruyter (via Crossref) |
op_collection_id |
crdegruyter |
language |
unknown |
topic |
Ecology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Ecology Ecology, Evolution, Behavior and Systematics Rajani Kanta, Mishra Babula, Jena Anilkumar, Narayana Pillai Ravidas Krishna, Naik Venkateswaran Bhaskar, Parli Melena A, Soares Variability of chlorophyll-a and diatoms in the frontal ecosystem of Indian Ocean sector of the Southern Ocean |
topic_facet |
Ecology Ecology, Evolution, Behavior and Systematics |
description |
Abstract Phytoplankton composition plays a major role in biogeochemical cycles of the ocean. The intensity of carbon fixation and export is strongly dependent on the phytoplankton community. Yet, the contribution of different types of phytoplankton to the total production on various communities is still poorly understood in the Indian Ocean sector of Southern Ocean (SO). Therefore the variability of chlorophyll- a ( Chl-a ) and diatoms in the frontal ecosystems of the Indian sector of SO have been investigated along with the sea surface temperature (SST), sea surface wind (SSW), photosynthetically active radiation (PAR), and nutrients datasets for the period of 1998–2012. Combined analysis of in-situ , model and satellite observations indicate that the variability of Chl-a and diatoms were primarily influenced by light and wind. The Chl-a was higher at the sub-Antarctic front (SAF) followed by the sub-tropical front (STF) and the polar front (PF). The diatom concentration was higher at the SAF followed by the PF and STF. Maximum concentration of Chl-a and diatoms commonly observed at the SAF region are probably due to the moderate PAR, SST and wind. Dominance of diatoms at the PF may be attributed to their adaptability for low light conditions. The results from this study in the frontal ecosystems would help to understand the biogeochemical cycle of the Indian sector of the SO. |
format |
Article in Journal/Newspaper |
author |
Rajani Kanta, Mishra Babula, Jena Anilkumar, Narayana Pillai Ravidas Krishna, Naik Venkateswaran Bhaskar, Parli Melena A, Soares |
author_facet |
Rajani Kanta, Mishra Babula, Jena Anilkumar, Narayana Pillai Ravidas Krishna, Naik Venkateswaran Bhaskar, Parli Melena A, Soares |
author_sort |
Rajani Kanta, Mishra |
title |
Variability of chlorophyll-a and diatoms in the frontal ecosystem of Indian Ocean sector of the Southern Ocean |
title_short |
Variability of chlorophyll-a and diatoms in the frontal ecosystem of Indian Ocean sector of the Southern Ocean |
title_full |
Variability of chlorophyll-a and diatoms in the frontal ecosystem of Indian Ocean sector of the Southern Ocean |
title_fullStr |
Variability of chlorophyll-a and diatoms in the frontal ecosystem of Indian Ocean sector of the Southern Ocean |
title_full_unstemmed |
Variability of chlorophyll-a and diatoms in the frontal ecosystem of Indian Ocean sector of the Southern Ocean |
title_sort |
variability of chlorophyll-a and diatoms in the frontal ecosystem of indian ocean sector of the southern ocean |
publisher |
Walter de Gruyter GmbH |
publishDate |
2017 |
url |
http://dx.doi.org/10.1515/popore-2017-0014 http://content.sciendo.com/view/journals/popore/38/3/article-p375.xml http://www.degruyter.com/view/j/popore.2017.38.issue-3/popore-2017-0014/popore-2017-0014.pdf |
geographic |
Antarctic Southern Ocean Indian |
geographic_facet |
Antarctic Southern Ocean Indian |
genre |
Antarc* Antarctic Polar Research Southern Ocean |
genre_facet |
Antarc* Antarctic Polar Research Southern Ocean |
op_source |
Polish Polar Research volume 38, issue 3, page 375-392 ISSN 2081-8262 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/3.0 |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1515/popore-2017-0014 |
container_title |
Polish Polar Research |
container_volume |
38 |
container_issue |
3 |
container_start_page |
375 |
op_container_end_page |
392 |
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1766285684205682688 |