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Response of phytoplankton to heavy cloud cover and turbidity in the northern Bay of Bengal
An interesting physiological response of phytoplankton to large fluctuations in underwater photosynthetically active radiation (PAR) levels in the northern Bay of Bengal has been presented here. This study is primarily based on a 12-day time series observation in the northern Bay of Bengal during th...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Nature Publishing Group UK
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6062583/ https://www.ncbi.nlm.nih.gov/pubmed/30050043 http://dx.doi.org/10.1038/s41598-018-29586-1 |
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author | Jyothibabu, R. Arunpandi, N. Jagadeesan, L. Karnan, C. Lallu, K. R. Vinayachandran, P. N. |
author_facet | Jyothibabu, R. Arunpandi, N. Jagadeesan, L. Karnan, C. Lallu, K. R. Vinayachandran, P. N. |
author_sort | Jyothibabu, R. |
collection | PubMed |
description | An interesting physiological response of phytoplankton to large fluctuations in underwater photosynthetically active radiation (PAR) levels in the northern Bay of Bengal has been presented here. This study is primarily based on a 12-day time series observation in the northern Bay of Bengal during the peak Southwest Monsoon (July 2012), when the study region was recurrently exposed to alternating cloudy and sunny sky conditions. On overcast days, the PAR available underwater at the time series location (TSL) drastically decreased, with the noontime PAR at the surface water (2 m) usually being ~600 µmol m(−2) s(−1) on sunny days and declining to ~50 µmol m(−2) s(−1) on heavily overcast days. Closely linked with the sunny and cloudy days at TSL, chlorophyll a concentration in the water column showed noticeable features; it increased in the upper water column (surface-40 m) and decreased in the lower water column (41–80 m) on cloudy days, while the reverse was the case on sunny days. Based on in-situ and laboratory experimental data, it was observed that these temporal changes in the vertical distribution of chlorophyll a in the northern Bay of Bengal were due to the short-term physiological acclimation of phytoplankton to large changes in underwater PAR. |
format | Online Article Text |
id | pubmed-6062583 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-60625832018-07-31 Response of phytoplankton to heavy cloud cover and turbidity in the northern Bay of Bengal Jyothibabu, R. Arunpandi, N. Jagadeesan, L. Karnan, C. Lallu, K. R. Vinayachandran, P. N. Sci Rep Article An interesting physiological response of phytoplankton to large fluctuations in underwater photosynthetically active radiation (PAR) levels in the northern Bay of Bengal has been presented here. This study is primarily based on a 12-day time series observation in the northern Bay of Bengal during the peak Southwest Monsoon (July 2012), when the study region was recurrently exposed to alternating cloudy and sunny sky conditions. On overcast days, the PAR available underwater at the time series location (TSL) drastically decreased, with the noontime PAR at the surface water (2 m) usually being ~600 µmol m(−2) s(−1) on sunny days and declining to ~50 µmol m(−2) s(−1) on heavily overcast days. Closely linked with the sunny and cloudy days at TSL, chlorophyll a concentration in the water column showed noticeable features; it increased in the upper water column (surface-40 m) and decreased in the lower water column (41–80 m) on cloudy days, while the reverse was the case on sunny days. Based on in-situ and laboratory experimental data, it was observed that these temporal changes in the vertical distribution of chlorophyll a in the northern Bay of Bengal were due to the short-term physiological acclimation of phytoplankton to large changes in underwater PAR. Nature Publishing Group UK 2018-07-26 /pmc/articles/PMC6062583/ /pubmed/30050043 http://dx.doi.org/10.1038/s41598-018-29586-1 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Jyothibabu, R. Arunpandi, N. Jagadeesan, L. Karnan, C. Lallu, K. R. Vinayachandran, P. N. Response of phytoplankton to heavy cloud cover and turbidity in the northern Bay of Bengal |
title | Response of phytoplankton to heavy cloud cover and turbidity in the northern Bay of Bengal |
title_full | Response of phytoplankton to heavy cloud cover and turbidity in the northern Bay of Bengal |
title_fullStr | Response of phytoplankton to heavy cloud cover and turbidity in the northern Bay of Bengal |
title_full_unstemmed | Response of phytoplankton to heavy cloud cover and turbidity in the northern Bay of Bengal |
title_short | Response of phytoplankton to heavy cloud cover and turbidity in the northern Bay of Bengal |
title_sort | response of phytoplankton to heavy cloud cover and turbidity in the northern bay of bengal |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6062583/ https://www.ncbi.nlm.nih.gov/pubmed/30050043 http://dx.doi.org/10.1038/s41598-018-29586-1 |
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