Browsing Scholarly literature by Author "Gauns, M."
Now showing items 21-40 of 111
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Biogeochemical cycling in the low oxygen marine environments
Shenoy, D.M.; Naik, H.; Kurian, S.; Gauns, M.; Ward, B.; Burkill, P.; Smetacek, V. (Elsevier B.V., 2020)Biogeochemistry is the interdisciplinary science of the composition and cycling of chemicalelements. Nitrogen and oxygen are two elements that are essential for living organisms and the sustenance of life on Earth. While ... -
Biogeochemical significance of transport exopolymer particles in the Indian Ocean
DileepKumar, M.; Sarma, V.V.S.S.; Ramaiah, N.; Gauns, M.; DeSousa, S.N. (American Geophysical Union, 1998)The behaviour of Transparent Exopolymer Particles (TEP), produced by biochemical processes, was studied for the North Indian Ocean, an area of global biogeochemical significance, during 1996 southwest monsoon. Very different ... -
Biogeochemistry and ecology of Pyrosoma spinosum from the Central Arabian Sea
Gauns, M.; Mochemadkar, S.; Pratihary, A.K.; Roy, R.; Naqvi, S.W.A. (Springer, 2015)Background: A swarm of pelagic tunicate (Pyrosoma spinosum) was found in the surface open waters of the Arabian Sea during late southwest monsoon (September 2007). The swarm site was characterized by moderate southwesterly ... -
Biogeochemistry of iron in the Arabian sea
Moffett, J.W.; Vedamati, J.; Goepfert, T.J.; Pratihary, A.K.; Gauns, M.; Naqvi, S.W.A. (Association for the Sciences of Limnology and Oceanography, 2015)The Arabian Sea is a productive basin where seasonal upwelling and convective mixing result in high surface nutrient concentrations and widespread algal blooms. The factors controlling primary productivity in the Arabian ... -
Biogeochemistry of the Bay of Bengal: Physical, chemical and primary productivity characteristics of the central and western Bay of Bengal during summer monsoon 2001
Madhupratap, M.; Gauns, M.; Ramaiah, N.; PrasannaKumar, S.; Muraleedharan, P.M.; DeSousa, S.N.; Sardessai, S.; Muraleedharan, U.D. (Elsevier, 2003)Reliable data on biological characteristics from the Bay of Bengal are elusive. In this paper, we present results on physics, chemistry and biology simultaneously measured during the summer monsoon, 2001 from open ocean ... -
Carbon budget in the eastern and central Arabian Sea: An Indian JGOFS synthesis
Sarma, V.V.S.S.; Swathi, P.S.; DileepKumar, M.; PrasannaKumar, S.; Bhattathiri, P.M.A.; Madhupratap, M.; Ramaswamy, V.; Sarin, M.M.; Gauns, M.; Ramaiah, N.; Sardessai, S.; DeSousa, S.N. (American Geophysical Union, 2003)The carbon budget for the eastern and central Arabian Sea was constructed using results from the Modular Ocean Model and biogeochemical data collected largely under the Indian Joint Global Ocean Flux Study programme. The ... -
Comparative accounts of biological productivity characteristics and estimates of carbon fluxes in the Arabian Sea and the Bay of Bengal
Gauns, M.; Madhupratap, M.; Ramaiah, N.; Jyothibabu, R.; Fernandes, V.; Paul, J.T.; PrasannaKumar, S. (Elsevier, 2005)The Arabian Sea and the Bay of Bengalare tropical basins experiencing monsoonalwind forcing that reverses semiannually. This brings changes in physics, chemistry and biology of the upper water column on a seasonal scale ... -
Concentrations of heavy metals in commercially important Oysters from Goa, Central-West coast of India
Shenai-Tirodkar, P.S.; Gauns, M.; Ansari, Z.A. (Springer, 2016)The major beds of oyster along the central-west coast of India are exposed to different anthropogenic activities and are severely exploited for human consumption. In this viewpoint, tissues of oyster Crassostrea ... -
Cyclone phyan-induced plankton community succession in the coastal waters off Goa, India
Gauns, M.; Kurian, S.; Shenoy, D.M.; Naik, H.; Naqvi, S.W.A. (Current Science Association, 2016)Effects of the cyclonic storm Phyan, which hit the states of Goa and Maharashtra in western India during 9-12 November 2009, on coastal waters were studied. Mixing induced by the cyclone appreciably affected the vertical ... -
Dissolved methane in Indian freshwater reservoirs
Shirodkar, G.; Naqvi, S.W.A.; Kurian, S.; Shenoy, D.M.; Pratihary, A.K.; Naik, H.; Patil, S.; Sarkar, A.; Gauns, M. (Springer, 2013)Emission of methane (CH4), a potent greenhouse gas, from tropical reservoirs is of interest because such reservoirs experience conducive conditions for CH4 production through anaerobic microbial activities. It has been ... -
Diversity of culturable nitrate-reducing bacteria from the Arabian Sea oxygen minimum zone
Mulla, A.; Fernandes, G.; Menezes, L.; Meena, R.M.; Naik, H.; Gauns, M.; Damare, S.R. (Elsevier, 2018)The subsurface waters of the northern Arabian Sea display a pronounced oxygen minimum layer associated with high nitrite maxima which provide an ideal niche for organisms that can respire nitrate. Culture-based studies ... -
Dynamics of dimethylsulphide and associated compounds in the coastal waters of Goa, west coast of India
Bepari, K.F.; Shenoy, D.M.; ChndrasekharaRao, A.V.; Kurian, S.; Gauns, M.; Naik, B.R.; Naqvi, S.W.A. (Elsevier B.V., 2020)Concentrations of total dimethylsulphoniopropionate (DMSPt), Dimethylsulphide (DMS) and total dimethylsulphoxide (DMSOt) were measured at a coastal time series site, west coast of India, from September 2009 to December ... -
Ecological diversity of planktonic protists in spatial regimes of the Arabian Sea revealed through next-generation sequencing
Das, P.B.; Gauns, M.; Naqvi, S.W.A. (Elsevier, 2019)Eukaryotic microbes inhabiting diverse ecological niches are capable of mediating biogeochemical shifts. Here, we studied the distribution patterns of protistan community in oxygen-deficient sites in the Arabian Sea and ... -
Enumeration of total virioplankton and isolation of specific cyanophages from selected aquatic ecosystems in Goa, India
Noronha, J.M.; Mulla, A.B.; Gauns, M.; Ghadi, S.C. (Current Science Association & Indian Academy of Sciences, 2018)Viruses are known to be highly abundant and, therefore , ecologically significant entities of all aquatic ecosystems. However, very few studies from marine and freshwater ecosystems in India have dealt with enu-meration, ... -
Environmental association of heterotrophic micro-eukaryotes in the varying biogeochemical regimes of the Arabian Sea, resolved via high-throughput sequencing
Das, P.B.; Gauns, M.; Stock, A.; Naqvi, S.W.A. (Springer, 2021)The diverse physicochemical conditions prevailing in the Arabian Sea are expected to result in marked spatial variations in heterotrophic flagellate (HF) and ciliate communities. Here, we report the environmental association ... -
Epibiotic communities (microalgae and meiofauna) on the pneumatophores of Avicennia officinalis (L.)
Sahoo, G.; Ansari, Z.A.; Shaikh, J.B.; Varik, S.U.; Gauns, M. (Elsevier, 2018)In a mangrove environment, several groups of organisms are symbiotically associated with pneumatophores (aerial roots). But whether these organisms are exclusively found in this habitat (uniqueness) or accidentally settled ... -
Evaluation of surface water and sediment quality in Chicalim Bay, Nerul Creek, and Chapora Bay from Goa coast, India - a statistical approach
Shenai-Tirodkar, P.S.; Gauns, M.; Ansari, Z.A. (Springer, 2016)To better understand the spatial and temporal variation in surface water and sediment quality, parameters were evaluated from the three sites Chicalim Bay (CB), Nerul Creek (NC), and Chapora Bay (ChB) along the Goa coast, ... -
First record of the Calanoid Copepod Pseudodiaptomus serricaudatus (Scott, T. 1894), (Copepoda: Calanoida: Pseudodiaptomidae) in the equatorial Indian ocean.
Rebello, V.; Narvekar, J.; Gadi, P.; Venenkar, A.; Gauns, M.; PrasannaKumar, S. (Asian Fisheries Society, 2014)Pseudodiaptomus serricaudatus (Scott, T. 1894), a planktonic copepod belonging to the family Pseudodiaptomidae, though has worldwide distribution, has been reported only from estuarine and coastal waters. This is the first ... -
High biological productivity in the central Arabian Sea during the summer monsoon driven by Ekman pumping and lateral advection
PrasannaKumar, S.; Madhupratap, M.; DileepKumar, M.; Muraleedharan, P.M.; DeSouza, S.N.; Gauns, M.; Sarma, V.V.S.S. (Indian Academy of Sciences, 2001)Open oceans are generally oligotrophic and support less biological production. Results from the central Arabian Sea show that it may be an exception to this. We provide the observational evidence of fairly high biological ... -
Identification of non-indigenous phytoplankton species dominated bloom off Goa using inverted microscopy and pigment (HPLC) analysis
Bhaskar, P.V.; Roy, R.; Gauns, M.; Shenoy, D.M.; Rao, V.D.; Mochemadkar, S. (Indian Academy of Sciences, 2011-12)An unusual phytoplankton bloom dominated by unidentified green coloured spherical algal cells (approx 5 mu m diameter) and dinoflagellates (Heterocapsa, Scripsiella and Gymnodinium) was encountered along the coast of Goa, ...