Response of phytoplankton biomass to nutrient stoichiometry in coastal waters of the western Bay of Bengal

The hydro-biological parameters such as thermohaline structure, nutrients, and chlorophyll-a (chl-a) during pre-southwest monsoon (PRSWM) and post-southwest monsoon (POSWM) periods of 2017, was investigated and compared along a coastal transect in the western Bay of Bengal (BoB). The impact of cold-...

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Autores principales:	Teesha Mathew, Satya Prakash, Sanjiba Kumar Baliarsingh, Alakes Samanta, R.S. Lakshmi, Aneesh Anandrao Lotliker, Abhisek Chatterjee, T.M. Balakrishnan Nair
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Nutrient Phytoplankton Bay of Bengal Molar Ratio Eddy Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/8d074b5458004a74a0f696e9c9cf9eec
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spelling	oai:doaj.org-article:8d074b5458004a74a0f696e9c9cf9eec2021-12-01T04:59:27ZResponse of phytoplankton biomass to nutrient stoichiometry in coastal waters of the western Bay of Bengal1470-160X10.1016/j.ecolind.2021.108119https://doaj.org/article/8d074b5458004a74a0f696e9c9cf9eec2021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21007846https://doaj.org/toc/1470-160XThe hydro-biological parameters such as thermohaline structure, nutrients, and chlorophyll-a (chl-a) during pre-southwest monsoon (PRSWM) and post-southwest monsoon (POSWM) periods of 2017, was investigated and compared along a coastal transect in the western Bay of Bengal (BoB). The impact of cold-core and warm-core eddies on chl-a in the very near coastal waters of the western BoB was analyzed. During PRSWM period, the water column was recharged with phytoplankton growth-promoting nutrients entrained by cold-core eddies that resulted in an increment in chl-a concentration. A three-times increase in chl-a concentration was observed due to the cold-core eddy, whereas the presence of warm-core eddy reduced the chl-a concentration by 87%. However, during POSWM period, despite having higher nitrate concentration and adequate light in the water column, the surface chl-a was substantially lesser than PRSWM. The molar ratio of ambient inorganic macronutrients during POSWM period played a significant role resulting in lower chl-a concentration. Nitrogen to phosphate (N:P) and nitrogen to silicate (N:Si) ratios were less than the Redfield values. The chl-a concentration off Godavari, a biological hotspot, was the lowest during POSWM period. This study highlights phosphate limitation off Godavari during the high river discharge period.Teesha MathewSatya PrakashSanjiba Kumar BaliarsinghAlakes SamantaR.S. LakshmiAneesh Anandrao LotlikerAbhisek ChatterjeeT.M. Balakrishnan NairElsevierarticleNutrientPhytoplanktonBay of BengalMolar RatioEddyEcologyQH540-549.5ENEcological Indicators, Vol 131, Iss , Pp 108119- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Nutrient Phytoplankton Bay of Bengal Molar Ratio Eddy Ecology QH540-549.5
spellingShingle	Nutrient Phytoplankton Bay of Bengal Molar Ratio Eddy Ecology QH540-549.5 Teesha Mathew Satya Prakash Sanjiba Kumar Baliarsingh Alakes Samanta R.S. Lakshmi Aneesh Anandrao Lotliker Abhisek Chatterjee T.M. Balakrishnan Nair Response of phytoplankton biomass to nutrient stoichiometry in coastal waters of the western Bay of Bengal
description	The hydro-biological parameters such as thermohaline structure, nutrients, and chlorophyll-a (chl-a) during pre-southwest monsoon (PRSWM) and post-southwest monsoon (POSWM) periods of 2017, was investigated and compared along a coastal transect in the western Bay of Bengal (BoB). The impact of cold-core and warm-core eddies on chl-a in the very near coastal waters of the western BoB was analyzed. During PRSWM period, the water column was recharged with phytoplankton growth-promoting nutrients entrained by cold-core eddies that resulted in an increment in chl-a concentration. A three-times increase in chl-a concentration was observed due to the cold-core eddy, whereas the presence of warm-core eddy reduced the chl-a concentration by 87%. However, during POSWM period, despite having higher nitrate concentration and adequate light in the water column, the surface chl-a was substantially lesser than PRSWM. The molar ratio of ambient inorganic macronutrients during POSWM period played a significant role resulting in lower chl-a concentration. Nitrogen to phosphate (N:P) and nitrogen to silicate (N:Si) ratios were less than the Redfield values. The chl-a concentration off Godavari, a biological hotspot, was the lowest during POSWM period. This study highlights phosphate limitation off Godavari during the high river discharge period.
format	article
author	Teesha Mathew Satya Prakash Sanjiba Kumar Baliarsingh Alakes Samanta R.S. Lakshmi Aneesh Anandrao Lotliker Abhisek Chatterjee T.M. Balakrishnan Nair
author_facet	Teesha Mathew Satya Prakash Sanjiba Kumar Baliarsingh Alakes Samanta R.S. Lakshmi Aneesh Anandrao Lotliker Abhisek Chatterjee T.M. Balakrishnan Nair
author_sort	Teesha Mathew
title	Response of phytoplankton biomass to nutrient stoichiometry in coastal waters of the western Bay of Bengal
title_short	Response of phytoplankton biomass to nutrient stoichiometry in coastal waters of the western Bay of Bengal
title_full	Response of phytoplankton biomass to nutrient stoichiometry in coastal waters of the western Bay of Bengal
title_fullStr	Response of phytoplankton biomass to nutrient stoichiometry in coastal waters of the western Bay of Bengal
title_full_unstemmed	Response of phytoplankton biomass to nutrient stoichiometry in coastal waters of the western Bay of Bengal
title_sort	response of phytoplankton biomass to nutrient stoichiometry in coastal waters of the western bay of bengal
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/8d074b5458004a74a0f696e9c9cf9eec
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Response of phytoplankton biomass to nutrient stoichiometry in coastal waters of the western Bay of Bengal

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