Browsing by Subject "nitrogen"
Now showing items 1-18 of 18
-
A study on inorganic carbon components in the Andaman Sea during the post monsoon season
(Ifremer/ CNRS/ IRD/ Editions scientifiques et medicales Elsevier SAS. Tous droits reserves, 2001)Extensive data have been collected on the carbon dioxide system during the post monsoon season in the eastern Bay of Bengal and the Andaman Sea of the northeastern Indian Ocean. The vertical distribution of temperature and ... -
Atmospheric outflow of nutrients to the Bay of Bengal: Impact of anthropogenic sources..
(Elsevier, 2015)The air–sea deposition of nutrients (N, P and Fe) to the oceanic regions locateddownwind of pollution sources in south and south-east Asia is gaining considerable attention in the present-day scenario of climate change. ... -
Elemental (C, H, N) composition of zooplankton from north Arabian Sea
(NISCAIR, CSIR, 1995)Zooplankton samples collected from north Arabian Sea during March 1992 were analysed for elemental (C,H,N) composition. Estimated carbon, hydrogen and nitrogen concentrations displayed variations among different groups but ... -
Experimental studies on Urea Degradation in Seawater
(Indian Association for Limnology and Oceanography, 1980)The rate of urea degradation in seawater was studied under various conditions and the kinetics of urea degradation was evaluated. Urea decomposition experiments showed that the rates and quantity of ammonium oxidation were ... -
Growth of hydrocarbon utilizing microorganisms
(CSIR-NISCAIR, 1986)Two isolates from marine mud having broad spectrum hydrocarbon utilizing profile were identified as Arthrobacter simplex and Candida tropicalis.Both the organisms grew exponentially on crude oil. The cell yield of the ... -
Hydrochemistry of the Bay of Bengal: Possible reasons for a different water-column cycling of carbon and nitrogen from the Arabian Sea
(Elsevier, 1994)A study on biogeochemical cycling in the western Bay of Bengal was undertaken during two seasons (pre-southwest monsoon and northeast monsoon of 1991). Relationships of the conservative tracers NO and PO with potential ... -
Immediate response of meio and macrobenthos to disturbance caused by a benthic disturber
(International Society of Offshore and Polar Engineers, Cupertino, CA (USA), 1999)The probable impact of nodule mining on benthic biota was studied by creating a benthic disturbance. During the predisturbance study in the Central Indian Basin, box core samples were analyzed for the distribution, composition ... -
Inorganic combined nitrogen budget of the Arabian Sea: Some geochemical and climatic implications
(Waseda University, Tokyo, 1992)Estimates of the local sources and sinks of inorganic combined nitrogen in the Arabian Sea suggest a net loss of sup(-)3 x 10 sup(13) gN y sup(-1). This seems to be made up largely by the upward flux facilitatEd. by a high ... -
Inorganic nitrogen and nitrate reduction in the Arabian Sea
(CSIR-NISCAIR, 1983)Concentration of inorganic nitrogen compounds within the euphotic zone is very low and it increases sharply in the thermocline layer. A steady decrease in the NO sub(3)-N occurs from south to north at intermediate depths. ... -
Larval development and metamorphosis of Balanus albicostatus (Cirripedia: Thoracica); implications of temperature, food concentration and energetics
(Marine Biological Association of the United Kingdom, 2006)The influence of food concentrations (0.5, 1 and 2 x 105 cells ml sup(-1)) and temperatures (20 and 30 degrees C) on the survival, development, organic carbon and nitrogen content of Balanus albicostatus larvae was evaluated ... -
Litter fall and energy flux in a mangrove ecosystem
(Academic Press, 1997)Production, elemental composition and In situ decomposition of litter of Rhizophora apiculata, R. mucronata, Sonneratia alba and Avicennia offcinalis were studied in a mangrove ecosystem fringing Mandovi-Zuari Estuaries ... -
Nitrogen and phosphorus requirements of an Alexandrium minutum bloom in the Penze' Estuary, France
(American Society of Limnology and Oceanography, 2004)During an intense (up to 33 x 10 sup(6) cells L sup(-1)) Alexandrium minutum bloom in the Penze estuary (France), total NO sub(3), NH sub(4), and PO sub(4) requirements of the bloom were, respectively, 184, 25, and 20 mu ... -
Nitrogenous nutrients and primary production in a tropical oceanic environment
(Rosenstiel School of Marine and Atmospheric Science of the University of Miami, 1986)Measurements of the concentrations of nitrogenous nutrients and primary production were made at 10 stations along 8 degrees N and 10 degrees N in the tropical oceanic Lakshadweep waters Inorganic nitrogen (NO3, NO2 and ... -
Nutrients of the Cochin backwater in relation to environmental characteristics
(Springer, 1969)The nutrient distribution of the Cochin Backwater was studied at 6 stations throughout the year The depth profiles of phosphorus (inorganic and organic), nitrogen (nitrate and nitrite) and silicon, showed a marked seasonal ... -
Organic matter composition in sediments of the Oman margin
(Taylor and Francis, 2003)The quantity and biochemical composition of organic matter (OM) in the sediments underlying and below oxygen minimum zone (OMZ) in the Arabian Sea were studied to provide information on the diagenetic processes of organic ... -
Reconstruction of depositional environment of a tropical estuary and response of δ <sup>13</sup> C<sub>org</sub> and TOC/TN signatures to changing environmental conditions
(Elsevier, 2014)The distribution of sediment components, organic carbon, aluminium normalized metals, bulk sedimentary organic stable carbon isotope ratios i.e. δ<sup>13</sup> c<sub>org</sub> and elemental TOC/TN ratios were studied within ... -
Seasonal variations in uptake and in situ regeneration of nitrogen in mangrove waters
(American Society of Limnology and Oceanography, 2002)Seasonal changes of uptake of nitrogenous nutrients (NH sub(4) sup(+), NO sub(3) sup(-), NO sub(2) sup(-), and urea) and regeneration (NH sub(4) sup(+) and NO sub(2) sup(-) production) in the plankton fraction of a mangrove ... -
Studies on organic carbon, nitrogen and phosphorous in the sediments of Mandovi Estuary, Goa
(NISCAIR, CSIR, 1996)Sediment organic carbon, total nitrogen, total phosphorous and hydrography of the overlying waters of the estuarine region in Mandovi Estuary, Goa, India have been studied. The relationship of carbon and nutrients with ...