Browsing Scholarly literature by Author "Rao, D.N."
Now showing items 1-11 of 11
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Accumulation of dissolved organic carbon and nitrogen in the photic zone in the nitrogen-depleted waters of the Bay of Bengal
Rao, D.N.; Sarma, V.V.S.S. (Elsevier, 2022)Dissolved organic matter (DOM) accumulates in the upper ocean for several days to years and supports both autotrophic and heterotrophic activities. To examine the source of DOM and its role in plankton metabolic processes, ... -
Impact of atmospheric dry deposition of nutrients on phytoplankton pigment composition and primary production in the coastal Bay of Bengal
Kumari, V.R.; Neeraja, B.; Rao, D.N.; Ghosh, V.R.D.; Rajula, G.R.; Sarma, V.V.S.S. (Springer, 2022)Atmospheric deposition of pollutants decreases pH and increases the nutrient concentration in the surface water.To examine its impact on coastal phytoplankton composition and primary production, monthly atmospheric aerosol ... -
Impact of eddies on dissolved inorganic carbon components in the Bay of Bengal
Sarma, V.V.S.S.; SampathKumar, G.; Yadav, K.; Dalabehera, H.B.; Rao, D.N.; Behera, S.; Jagadeesan, L. (2019)To examine the influence of anticyclonic (ACE) and cyclonic (CE) eddies on variations in hydrographic properties and total inorganic carbon system (CT), a study was conducted in the western Bay of Bengal (BoB). The depth ... -
Nitrogen fixation in the western coastal Bay of Bengal: Controlling factors and contribution to primary production
Kumari, V.R.; Ghosh, V.R.D.; Rao, D.N.; Krishna, M.S.; Sarma, V.V.S.S. (Elsevier, 2022)N2 fixation rates were measured at 18 stations in the western coastal Bay of Bengal (BoB) to evaluate its contribution to the external source of nitrogen and its controlling factors. During the study period (fall monsoon), ... -
Organic Nutrients Support High Primary Production in the Bay of Bengal
Sarma, V.V.S.S.; Rao, D.N.; Rajula, G.R.; Dalabehera, H.B.; Yadav, K. (2019)The Bay of Bengal (BoB) is known to experience low productivity but high sinking carbon fluxes to the bottom, and this paradox is attributed to mineral ballast of organic matter. We found for the first time that primary ... -
Phosphate removal through adsorption on suspended matter in the Bay of Bengal: Possible implications to primary production
Rao, D.N.; Ghosh, V.R.D.; Sam, P.; Yadav, K.; Sarma, V.V.S.S. (Springer, 2021)Low primary production in the Bay of Bengal (BoB) could not be explained as this region receives nutrients from atmospheric deposition, rivers, eddies, and mixing due to depression/cyclones. In addition to nutrients, BoB ... -
Release of significant fraction of primary production as dissolved organic carbon in the Bay of Bengal
Rao, D.N.; Chopra, M.; Rajula, G.R.; Durgadevi, D.S.L.; Sarma, V.V.S.S. (Elsevier Ltd, 2021)Despite nutrients supply through river discharge, atmospheric deposition and eddy-driven mixing, low primary production in the Bay of Bengal (BoB) is attributed to light limitation and non-availability of nutrients during ... -
Role of eddies in structuring the mesozooplankton composition in coastal waters of the western Bay of Bengal
Jagadeesan, L.; Kumar, G.S.; Rao, D.N.; Babu, N.S.; Srinivas, T.N.R. (2019)The mesozooplankton community structure of a cold core eddy, moving through a coastal location (Bheemunipatnam) in the western Bay of Bengal (BoB), was studied continuously for 17 days (21st February to 8th March 2016) ... -
Role of eddies on controlling total and size-fractionated primary production in the Bay of Bengal
Sarma, V.V.S.S.; Chopra, M.; Rao, D.N.; Priya, M.M.R.; Rajula, G.R.; Lakshmi, D.S.R.; Rao, V.D. (Elsevier BV, 2020)In order to examine the role of eddies on total and size-fractionated primary production, two cyclonic (CE), one anticyclonic (ACE) and no-eddy (NE) regions were sampled in the BoB during pre-summer monsoon (June 2019). ... -
Role of eddies on intensity of oxygen minimum zone in the Bay of Bengal
Sarma, V.V.S.S.; Jagadeesan, L.; Dalabehera, H.B.; Rao, D.N.; Kumar, G.S.; Durgadevi, D.S.; Yadav, K.; Behera, S.; Priya, M.M.R. (Elsevier, 2018)One of the strongest oxygen minimum zones (OMZ) in the world oceans occurs in the Bay of Bengal (BoB) with no systematic trends in dissolved oxygen (DO) since past half a century. An evaluation is made here to examine the ... -
Severe phosphate limitation on nitrogen fixation in the Bay of Bengal
Sarma, V.V.S.S.; Vivek, R.; Rao, D.N.; Ghosh, V.R.D. (Elsevier BV, 2020)Several anticyclonic (ACE) and cyclonic (CE) eddies constitute the circulation in the Bay of Bengal (BoB) and are associated with the downwelling and upwelling processes leading to oligotrophic and eutrophic conditions ...