Spatial variations of DMS, DMSP and phytoplankton in the Bay of Bengal during the summer monsoon 2001

Shenoy, Damodar M.; Paul, Jane T.; Gauns, Mangesh; Ramaiah, N.; Kumar, M. Dileep

doi:10.1016/j.marenvres.2006.03.005

Cited by 29 publications

(16 citation statements)

References 36 publications

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“…The presence of this species with high abundance is important for material fluxes towards bottom. Moreover, diatom flora predominated by T. longissima can contribute significantly to dimethyl sulfide (DMS) pool which is oxidized in the marine atmosphere to various sulfur-containing compounds that have potential to create new aerosols acting as cloud condensation nuclei (Shenoy et al 2006;Paul et al 2007). …”

Section: Spatial and Seasonal Distribution Of Zooplanktonmentioning

confidence: 99%

Phytoplankton community structure in local water types at a coastal site in north-western Bay of Bengal

Baliarsingh

Srichandan

Lotliker

et al. 2016

Environ Monit Assess

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A comprehensive analysis on seasonal distribution of phytoplankton community structure and their interaction with environmental variables was carried out in two local water types (type 1 < 30 m isobath and Type 2 > 30 m isobath) at a coastal site in north-western Bay of Bengal. Phytoplankton community was represented by 211 taxa (146 marine, 37 fresh, 2 brackish, 20 marine-fresh, and 6 marine-brackish-fresh) belonging to seven major groups including 45 potential bloom forming and 22 potential toxin producing species. The seasonal variability depicted enrichment of phytoplankton during pre-monsoon in both water types. Total phytoplankton abundance pattern observed with inter-annual shift during monsoon and post-monsoon period at both water types. In both water types, diatom predominance was observed in terms of species richness and abundance comprising of centric (82 sp.) and pennate (58 sp.) forms. Pennate diatoms, Thalassiothrix longissima and Skeletonema costatum preponderated in both the water types. The diatom abundance was higher in type 1 in comparison to type 2. In general, SiO4 found to fuel growth of the dominant phytoplankton group, diatom in both the water types despite comparative lower concentration of other macronutrients in type 2.

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Section: Spatial and Seasonal Distribution Of Zooplanktonmentioning

confidence: 99%

Phytoplankton community structure in local water types at a coastal site in north-western Bay of Bengal

Baliarsingh

Srichandan

Lotliker

et al. 2016

Environ Monit Assess

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“…Shenoy et al (2006) reported that DMS and DMSP were, in general, restricted to the surface layers and their concentrations decreased rapidly below 40 or 50 m so that they were almost undetectable at 120 m.…”

Section: Vertical Profiles Of Dms and Dmspmentioning

confidence: 99%

Spatial distribution of dimethylsulfide and dimethylsulfoniopropionate in the Yellow Sea and Bohai Sea during summer

Yang

Zhang

et al. 2015

Chin. J. Ocean. Limnol.

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Abstrac tThe distributions of dimethylsulfide (DMS) and its precursor dimethylsulfoniopropionate (DMSP) in surface water of the Yellow Sea and the Bohai Sea were studied during June 2011. The mean concentrations and ranges of DMS, dissolved DMSP (DMSPd), and particulate DMSP (DMSPp) in surface waters were 6.85 (1.60-12.36), 7.25 (2.28-19.05) and 61.87 (6.28-224.01) nmol/L, respectively. There were strong correlations between DMSPp and chlorophyll a in the Bohai Sea and the North Yellow Sea, respectively, and concentrations of DMS and DMSP were high, with a relatively high proportion of dinofl agellates, in the region of the South Yellow Sea Cold Water Mass. Results show that phytoplankton biomass and species composition were important factors that controlled the distribution of DMS and DMSP. Complex environmental factors, including nutrients, transparency, and terrestrial runoff, might also infl uence the variability in DMS and DMSP. Biological production and consumption rates of DMS in the Bohai Sea were higher than those in the Yellow Sea. DMS production rates were closely correlated with DMSPd concentrations. DMS and DMSP exhibited obvious diel variations, with high concentrations occurring in the late afternoon (16:00-19:00) and low concentrations occurring during the night, implying that the intensity of solar radiation had a signifi cant infl uence on these variations. Size distributions of chlorophyll a and DMSPp were also investigated and large nanoplankton (5-20 μm), mainly diatoms, contributed signifi cantly to chlorophyll a and DMSPp at most stations. The average sea-to-air flux of DMS in the study area was estimated to be 11.07 μmol/(m 2 ·d) during the summer.

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“…For instance, Shenoy et al (2006) observed DMS and DMSP t concentrations of 3.3 ± 3 nM (range: 1.2-7.2 nM) and 12.9 ± 8 nM (range: 3.1-23.3 nM) respectively in the coastal Bay of Bengal during SW monsoon season which were lower than those in the present study (9.9 ± 6 nM (1.2-28.2 nM) and 17.3 ± 13 nM (0.8-61.6 nM) respectively). The observations carried out by Shenoy et al (2006) and during the present study were during the same time period (July-August), however, the coverage of geographical locations was different. For instance, unlike this study, Shenoy et al (2006) made measurements at 6 stations along the coastal Bay of Bengal which were not close to the outfall of estuary discharges.…”

Section: Influence Of River Discharge On Concentrations Of Dms and Dmmentioning

confidence: 99%

Impact of river discharge on distribution of dimethyl sulfide (DMS) and its fluxes in the coastal Bay of Bengal

Rao

Viswanadham

Bharathi

et al. 2015

Journal of Sea Research

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Spatial variations of DMS, DMSP and phytoplankton in the Bay of Bengal during the summer monsoon 2001

Cited by 29 publications

References 36 publications

Phytoplankton community structure in local water types at a coastal site in north-western Bay of Bengal

Phytoplankton community structure in local water types at a coastal site in north-western Bay of Bengal

Spatial distribution of dimethylsulfide and dimethylsulfoniopropionate in the Yellow Sea and Bohai Sea during summer

Impact of river discharge on distribution of dimethyl sulfide (DMS) and its fluxes in the coastal Bay of Bengal

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