Respiration rates in subsurface waters of the northern Indian Ocean: evidence for low decomposition rates of organic matter within the water column in the Bay of Bengal

Naqvi, S.W.A.; Shailaja, M.S.; Kumar, M. Dileep; Gupta, R. Sen

doi:10.1016/0967-0645(95)00080-1

Cited by 50 publications

(30 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The estimated carbon demands for the Arabian Sea intermediate water denitrification range from ca. 155 mg C m À2 d À1 (Naqvi et al 1996) to 346--518 mg C m À2 d À1 (derived from Banse 1994) to 519--2274 mg C m À2 d À1 (calculated from Ducklow 1993). During summer monsoon, bacterial production in 0--300 m column is reported to range from 148 to 223 mg C m À2 d À1 in the Somali Basin (Wiebinga et al 1997).…”

Section: Discussionmentioning

confidence: 99%

Abundance and relationship of bacteria with transparent exopolymer particles during the 1996 summer monsoon in the Arabian Sea

et al. 2000

View full text Add to dashboard Cite

Bacterial abundance and production, numbers, sizes and concentrations of transparent exopolymer particles (TEP) and total organic carbon (TOC) were measured during the 1996 summer monsoon to understand the relationship between TEP, the most labile particulate organic carbon, and bacteria. While high regional variability in the vertical distribution of TOC was discernible, TEP concentrations were high in surface waters at 18--20 N along 64 E with concentrations well over 25 mg alginic acid equivalents l À1 due to upwelling induced productivity. Their concentrations decreased with depth and were lower between 200 and 500 m. Bacterial concentrations were up to 1.99 Â 10 8 l À1 in the surface waters and decreased by an order of magnitude or more at depths below 500 m. A better relationship has been found between bacterial abundance and concentrations of TEP than between bacteria and TOC, indicating that bacterial metabolism is fueled by availability of TEP in the Arabian Sea. Assuming a carbon assimilation of 33%, bacterial carbon demand (BCD) is estimated to be 1.017 to 4.035 g C m À2 d À1 in the surface waters. The observed TEP concentrations appear to be sufficient in meeting the surface and subsurface BCD in the northern Arabian Sea.

show abstract

Section: Discussionmentioning

confidence: 99%

Abundance and relationship of bacteria with transparent exopolymer particles during the 1996 summer monsoon in the Arabian Sea

et al. 2000

View full text Add to dashboard Cite

show abstract

“…In previous studies, these higher dissolved oxygen values in the northern BoB were attributed to faster sinking of organic river-borne suspended matter. Ballasting of organic particles leads to less bacterial degradation within the water column due to the lower residence time of sinking particles (Naqvi et al, , 1996. Higher total suspended matter was reported in the northern BoB due to the influence of river discharge, as shown by the salinity decrease.…”

Section: Influence Of Stratification On Omz Intensity In the Bay Of Bmentioning

confidence: 99%

Effects of Freshwater Stratification on Nutrients, Dissolved Oxygen, and Phytoplankton in the Bay of Bengal

Sarma¹,

Rao²,

Viswanadham³

et al. 2016

Oceanog

View full text Add to dashboard Cite

“…Active denitrification in the Arabian Sea is believed to be localized to the subsurface secondary nitrite (NO•) maximum (SNM), corresponding to a microbial activity maximum and light transmission minimum [Naqvi and Shailaja, 1993;. Strong differences exist between these two northern basins, with no SNM and little or no denitrification observed in the Bay of Bengal [Naqvi et al, 1996]. …”

Section: Introductionmentioning

confidence: 99%

Geochemical estimates of denitrification in the Arabian Sea and the Bay of Bengal during WOCE

Howell¹,

Doney²,

Fine³

et al. 1997

Geophysical Research Letters

View full text Add to dashboard Cite

Respiration rates in subsurface waters of the northern Indian Ocean: evidence for low decomposition rates of organic matter within the water column in the Bay of Bengal

Cited by 50 publications

References 16 publications

Abundance and relationship of bacteria with transparent exopolymer particles during the 1996 summer monsoon in the Arabian Sea

Abundance and relationship of bacteria with transparent exopolymer particles during the 1996 summer monsoon in the Arabian Sea

Effects of Freshwater Stratification on Nutrients, Dissolved Oxygen, and Phytoplankton in the Bay of Bengal

Geochemical estimates of denitrification in the Arabian Sea and the Bay of Bengal during WOCE

Contact Info

Product

Resources

About