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Denitrification rates and excess nitrogen gas concentrations in the Arabian Sea oxygen deficient zone
(Elsevier, 2006)
Rates of canonical, i.e. heterotrophic, water-column denitrification were measured by sup(15)N incubation techniques at a number of coastal and open ocean stations in the Arabian Sea. Measurements of N2 :Ar gas ratios were ...
The nitrogen cycle in the Arabian Sea
(Elsevier, 2005)
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 ...
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 ...
Variability of subsurface denitrification and surface productivity in the coastal eastern Arabian Sea over the past seven centuries
(SAGE, 2008)
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 ...
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 ...
Is delta sup(15)N of sedimentary organic matter a good proxy for paleodenitrification in coastal waters of the eastern Arabian Sea?
(American Geophysical Union, 2009)
Recently published sedimentary records of delta sup(15)N from several coastal areas affected by both natural and anthropogenically produced shallow hypoxia with the objective of testing this as a proxy for denitrification ...
A comparative study of Pleistocene phosphorites from the continental slope off western India
(Blackwell, 2000)
Two types of phosphorite recovered from the continental slope off western India are described. The first type, phosphorite 1, comprises a hard, grey nodule composed of carbonate fluorapatite (CFA) and calcite as major ...
Coastal versus open-ocean denitrification in the Arabian Sea
(The European Geosciences Union, 2006)
The Arabian Sea contains one of the three major open-ocean denitrification zones in the world. In addition, pelagic denitrification also occurs over the inner and mid-shelf off the west coast of India. The major differences ...
Ocean iron fertilization - Moving forward in a sea of uncertainty
(American Association for the Advancement of Science, 2008)
Ocean iron fertilization (OIF), one of several ocean methods proposed for mitigating rising atmospheric CO2, involves stimulating net phytoplankton growth by releasing iron to certain parts of the surface ocean. The ...
Benthic fluxes in a tropical estuary and their role in the ecosystem
(Elsevier, 2009)
In-situ measurements of benthic fluxes of oxygen and nutrients were made in the subtidal region of the Mandovi estuary during premonsoon and monsoon seasons to understand the role of sediment-water exchange processes in ...