DRS at CSIR-National Institute of Oceanography: Recent submissions
Now showing items 1401-1420 of 9429
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Fragilariopsis sp. bloom causes yellowish-brown waters off Alappuzha, south-central Kerala coast, India, during the mud bank-upwelling phase
(Current Science Association & Indian Academy of Sciences, 2018)Mud banks (Chakara) of Kerala are calm coastal waters that form in several isolated stretches along the coast usually during the southwest monsoon (SWM) period (June-September). They are characterized by the damping of ... -
Enumeration of total virioplankton and isolation of specific cyanophages from selected aquatic ecosystems in Goa, India
(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, ... -
Ship-mediated Marine Bioinvasions: Need for a Comprehensive Global Action Plan
(ASEAN Committee on Science and Technology (COST), 2018)Concern for marine bioinvasion has drawn international attention. The action plans in place to address this issue and those that are being promulgated are in need of a reassessment. A review of invertebrate invasions across ... -
Synthesis and photophysical characterization of heterocyclic dihydrotetracenes and their utility in the fluorescence imaging of HeLa cells
(Elsevier, 2018)Aza- and oxa-dihydrotetracenes were prepared in one step from 1,4-dicyanodibenzodioxins in good yields. These molecules represent the first examples of heterocyclic dihydrotetracenes with push-pull character. Aza-dihydrotetracene ... -
Seasonal variation of phytoplankton growth and microzooplankton grazing in a tropical coastal water (off Kochi), Southwest coast of India
(Elsevier, 2018)Phytoplankton growth and microzooplankton grazing in the coastal waters off Kochi, Southwest coast of India, were assessed during three seasons (Pre-Monsoon; Southwest Monsoon and Northeast Monsoon) using the dilution ... -
Characterisation, Sources and Flux of Unmelted Micrometeorites on Earth During the Last ~50,000 Years
(Nature Publishing Group, 2018)Dust dominates extraterrestrial flux on the earth (30,000 tonnes/yr), however only ~5% of the cosmic dust survives atmospheric entry which is basically in two forms: melted and unmelted. Melted micrometeorites undergo ... -
Responses of the zooplankton community to peak and waning periods of El Niño 2015-2016 in Kavaratti reef ecosystem, northern Indian Ocean
(Springer International Publishing, 2018)The study addressed the impact of the El Niño 2015-2016 on the ecosystem functioning and the subsequent effects on the distribution and community structure of zooplankton in the Kavaratti reef, a prominent coral atoll in ... -
Phytoplankton and Bacterial Communities in South Harbour, Manila Bay, Philippines
(ASEAN Committee on Science and Technology (COST), 2018)In line with the ASEAN-India project �Extent of Transfer of Alien Invasive Organisms in�South/Southeast Asia via Shipping�, phytoplankton and bacterial communities in the waters off�South Harbour, Manila Bay were investigated. ... -
Ventilation of Oxygen to Oxygen Minimum Zone Due to Anticyclonic Eddies in the Bay of Bengal
(John Wiley & Sons, 2018)Intense oxygen minimum zone (OMZ) occurs in the middepth of the Eastern Tropical Pacific (ETP), Arabian Sea (AS), and Bay of Bengal (BoB). However, the occurrence of anammox/denitrification was reported only in the ETP and ... -
A Review on the Phylogeography of Potentially Chemoautotrophic Bacteria from Major Vent and Seep Fauna and Their Contribution to Primary Production
(Taylor & Francis, 2018)Though geochemically and microbially well-defined, the phylogeographic data of microbial symbionts in these highly productive vent and seep systems require a closer examination and synthesis. QIIME analysis of 16S rDNA of ... -
Spatio-temporal variability in the sources of particulate organic carbon and nitrogen in a tropical Godavari estuary
(Elsevier, 2018)In order to evaluate the impact of seasonal river discharge on the spatio-temporal variability in the major sources of particulate organic matter (POM) in the tropical Godavari estuary, India, a comprehensive study was ... -
Development of multi-channel data logger for passive acoustic measurements
(Acoustical Society of India, 2018)Recording of passive acoustic data involves a listening device along with an instrumentation system. The passive listening device transforms mechanical disturbances to electrical signals. The subsequent sampling and logging ... -
Quantitative analyses of denitrifying bacterial diversity from a seasonally hypoxic monsoon governed tropical coastal region
(Elsevier, 2018)Microbial community mediated denitrification leads to nitrate reduction and, its eventual removal from marine ecosystems. Therefore, it is necessary to understand the functional diversity in terms of the abundance and types ... -
Seasonality and vertical distribution of epiphytic diatoms on the pneumatophore surface of mangrove Avicennia officinalis L.
(Springer Berlin Heidelberg, 2018)Mangrove pneumatophores (respiratory roots) form a unique habitat about which very little ecological information is available. In this study, epiphytic diatoms on the pneumatophore surface of Avicennia officinalis (L.) ... -
Responses of the picophytoplankton community to temperature fronts in the northeastern Arabian Sea during the northeast monsoon
(Elsevier, 2018)We investigated the responses of the picophytoplankton (< 3-μm) community to a temperature filament and front through high resolution spatial (~ 1 NM) sampling (November-23 to December-11, 2012) in the northeastern Arabian ... -
Developing community-based scientific priorities and new drilling proposals in the southern Indian and southwestern Pacific oceans
(Copernicus Gesellschaft MBH, Gottingen, Germany, 2018)An International Ocean Discovery Program (IODP) workshop was held at Sydney University, Aus-tralia, from 13 to 16 June 2017 and was attended by 97 scientists from 12 countries. The aim of the workshop was to investigate ... -
Biogeochemistry of methane in a tropical monsoonal estuarine system along the west coast of India
(Elsevier, 2018)Estuaries are known to be important sources of methane (CH4) to the atmosphere. However, a lack of adequate field studies in understanding the sources/sinks of CH4 in estuaries hampers the global atmospheric budgeting. ... -
Estimation of potential tidal energy along the west coast of India
(World Scientific, 2017)Tidal energy is one of the clean and non-depleting renewable energy sources. In contrast to other clean sources, such as wind, solar, geothermal etc., tidal energy can be predicted for years ahead. Also, the medium, seawater, ... -
Significance of metabolically active bacterioplankton in the frontal regions of the Northeastern Arabian Sea
(Springer International Publishing, 2018)The Northeastern Arabian Sea (NEAS) experiences convective mixing during winter monsoon, which facilitates nutrient enrichment in the surface layers. This region is also known to harbour several sea surface temperature ... -
Diversity and distribution of echinoderms in the South Eastern Arabian Sea shelf under the influence of seasonal hypoxia
(Elsevier, 2018)The South Eastern Arabian Sea (SEAS) margin represents a tropical eastern boundary upwelling system, which is subjected to intense seasonal hypoxia in the continental shelf, and impingement of oxygen minimum zone (OMZ) ...