DRS at CSIR-National Institute of Oceanography: Recent submissions
Now showing items 1111-1130 of 9376
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Diversity of Bacterial Community in the Oxygen Minimum Zones of Arabian Sea and Bay of Bengal as Deduced by Illumina Sequencing
(2020)The Indian Ocean harbors oxygen minimum zones (OMZs) in the Arabian Sea and Bay of Bengal, with dissolved oxygen < 20 M, located at the mid-depths of the water column. Till date, high-throughput sequence-data on depth-wise ... -
Sources and preservation dynamics of organic matter in surface sediments of Narmada River, India - Illustrated by amino acids
(2020)The preservation process of organic matter (OM) in estuarine environments determines the recycling and sinking of nutrients. This process requires the identification of sources, degradation states and the main processes ... -
Nearshore Waves and Littoral Drift Along a Micro-Tidal Wave-Dominated Coast Having Comparable Wind-Sea and Swell Energy
(2020)The nearshore wave characteristics and variations in littoral drift (longshore sediment transport; LST) are estimated based on different approaches for four years along the Vengurla coast, with comparable wind-sea and swell ... -
Wave crest height distribution during the tropical cyclone period
(2020)The wave crest height plays a vital role in designing both the fixed and floating marine structures. The present study examines the measured wave crest data at 18 m water depth off Visakhapatnam in the northwestern Bay of ... -
Variability of dissolved oxygen in the Arabian Sea Oxygen Minimum Zone and its driving mechanisms
(2020)The Arabian Sea hosts one of the most intense, perennial Oxygen Minimum Zones (OMZ) in the world ocean. Observations along a meridional transect at 68°E extending from 8 to 21°N showed large seasonal as well as interannual ... -
Circulation in the Gulf of Khambhat - A Lagrangian Perspective
(2020)The circulation of the Gulf of Khambhat (GoK) is studied from a Lagrangian point of view using a 2D numerical model. The model-predicted tide elevation and current speed are in agreement with the observations. Seasonal ... -
Wind-wave measurements and modelling in the shallow semi-enclosed Palk Bay
(2019)Wind-wave characteristics of the Palk Bay, a semi-enclosed water body, are studied by the wave measurements carried out at 2 locations during a one-year period. The analysis of wave data sets shows that wind-sea dominates ... -
Structure-Function Elucidation of a New ?-Conotoxin, MilIA, from Conus milneedwardsi
(2019)The a-Conotoxins are peptide toxins that are found in the venom of marine cone snails and they are potent antagonists of various subtypes of nicotinic acetylcholine receptors (nAChRs). Because nAChRs have an important role ... -
Flood estimation at ungauged catchments of western catchments of Karnataka, West coast of India
(2019)Many catchments in India are devoid of gauging stations. In the absence of measurements of stream flow, regional rainfall-runoff relationships developed over a hydro-meteorologically similar region may be used to estimate ... -
Optimization of the taxonomic resolution of an indicator taxon for cost-effective ecological monitoring: Perspectives from a heterogeneous tropical coastline
(2019)An important requirement towards formulating appropriate management and conservation measures for biological diversity is to devise efficient and cost-effective monitoring protocols that yield coherent data. Environmental ... -
Interactions of sulfur and methane-oxidizing bacteria in tropical estuarine sediments
(2019)The bacterial oxidation of sulfur and methane is central to the biogeochemical processes in sediments such as the tropical mangrove sediments. However, there is a lacuna of information on the seasonal interactions including ... -
Genome analysis of Marinobacter phage AS1 suggests its close interactions with host Marinobacter sp.
(2019)Marinobacter comprises a widespread and ecologically significant genus of marine bacteria with vast metabolic capabilities. However, very few reports on phages infecting this genus exist. In this study, we isolated and ... -
Chromate detoxification potential of Staphylococcus sp. isolates from an estuary
(2019)Chromium (Cr) pollution is an emerging environmental problem. The present study was carried out to isolate Cr-resistant bacteria and characterize their Cr detoxification and resistance ability. Bacteria screened by exposure ... -
Spatial and temporal variations in source, diagenesis, and fate of organic matter in sediments of the Netravati River, India
(2019)Organic matter (OM) such as organic nitrogen plays a substantial role in the global biogeochemical cycling of bio-reactive components-amino acids (AA) in aquatic environments. Spatial and temporal variations in source, ... -
Seasonal variation in Beta-glucosidase-producing culturable bacterial diversity in a monsoon-influenced tropical estuary
(2019)The episodic monsoon condition in a tropical estuarine environment inputs high allochthonous materials that are rich in carbohydrates and are mainly broken down by enzymatic hydrolysis thus alter both organic matter and ... -
Environmental Factors for Design and Operation of Deep-Sea Mining System: Based on Case Studies
(2019)This chapter brings together environmental factors that are expected to influence the design and operation of deep-sea mining system for polymetallic nodules. The study analyzes possible effects of various environmental ... -
Snapshot of environmental condition in different tropical estuarine systems by using S. cucullata (an edible oyster) as bio-indicator
(2019)Accumulation of toxic metals and indigenous bacteria in oyster, (Saccostrea cucullata) and their impact on antioxidant enzyme activities in the biological system was studied and used to provide snapshot of environmental ... -
Extinction of Antimicrobial Resistant Pathogens Using Silver Embedded Silica Nanoparticles and an Efflux Pump Blocker
(2019)Control measures against antimicrobial resistant bacterial pathogens are important challenges in our daily life. In this study, we discuss the sensitivity and resistance of four bacterial pathogens, Vibrio alginolyticus, ... -
Processes controlling arsenic enrichment along the eastern Arabian Sea surficial sediments
(2019)The processes enriching redox-sensitive arsenic (As) was investigated in 111 surficial sediments (27-3679�m water depth) overlain by varying levels of dissolved oxygen along the eastern Arabian Sea. Under oxygenated ... -
Isotopic fingerprinting of fluid circulation at the terminal stage of the Himalayan orogeny: An example from the Himalayan forearc basin, Indus Tsangpo suture zone, Ladakh, India
(2019)Quartz and calcite veins are omnipresent in the Indus basin sedimentary rocks (IBSRs) of the Indus Tsangpo suture zone (ITSZ) which were formed by the accumulation of sediments derived from both sides of the tectonic plate. ...