Now showing items 11-20 of 210
Nitrogen fixation rates in the eastern Arabian Sea
The Arabian Sea experiences bloom of the diazotroph Trichodesmium during certain times of the year when optimal sea surface temperature and oligotrophic condition favour their growth. We measured nitrogen fixation rates ...
Effect of salinity induced pH/alkalinity changes on benthic foraminifera: A laboratory culture experiment
The salinity of coastal waters in the vicinity of seasonally fresh water fed estuaries changes tremendously and reportedly affects the living calcite secreting organisms like foraminifera, as well as their dead remains. ...
Biogeochemistry and ecology of Pyrosoma spinosum from the Central Arabian Sea
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 ...
The nitrogen cycle in the Arabian Sea
Despite their importance for the global oceanic nitrogen (N) cycle, estimates of N fluxes in the Arabian Sea remain in considerable uncertainty. In this report, we summarize current knowledge of important processes, including ...
CSIR - National Institute of Oceanography
(Indian National Science Academy, 2016)
This is an institutional report of CSIR-National Institute of Oceanography, India showcasing its growth over last 50 years in Oceanographic research with special focus on Indian Ocean areas. The major research areas include ...
Effects of natural and human-induced hypoxia on coastal benthos
(European Geosciences Union, 2009)
Coastal hypoxia (defined here as <1.42 ml L sup(-1); 62.5 mew M; 2 mg L sup(-1), approx. 30% oxygen saturation) develops seasonally in many estuaries, fjords, and along open coasts as a result of natural upwelling or from ...
Rabin Sen Gupta - A biography
Variability of subsurface denitrification and surface productivity in the coastal eastern Arabian Sea over the past seven centuries
Temporal variations over the last approx. 700 years in surface productivity and subsurface denitrification in the coastal eastern Arabian Sea (off Goa, India), a hydrographically unique environment that experiences seasonal ...
Mineralogy and Sr–Nd isotopes of SPM and sediment from the Mandovi and Zuari estuaries: Influence of weathering and anthropogenic contribution
Clay minerals and Sr–Nd isotopes of suspended particulate matter (SPM) and bottom sediment were investigated along transect stations of the Mandovi and Zuari estuaries, western India to determine the provenance and role ...
The oceanic fixed nitrogen and nitrous oxide budgets: Moving targets as we enter the anthropocene?
(Institut de Ciencies del Mar de Barcelona, 2001)
New data forced to raise previous estimates of oceanic denitrification. The revised estimate of approx. 450 Tg N yr sup(-1) (Tg = 10 sup(12) g) produces an oceanic fixed N budget with a large deficit (approx. 200 Tg N yr ...