Papers by Kamal Kanta Satpathy
An intense monospecies bloom of the centric diatom Hemidiscus hardmannianus (Greville) Mann. (Bac... more An intense monospecies bloom of the centric diatom Hemidiscus hardmannianus (Greville) Mann. (Bacillariophyceae) occurred in the coastal waters of Sundarban mangrove wetland, India on 22 July, 2010. The species was abruptly flourished (mean density 8.86 Â 10 6 cells/L) resulting intense green coloration of water. The greatest impoverish-ment of diversity and density of phytoplankton, micro-and mesozooplankton community was observed during the bloom. The phytoplankton community showed an extreme reduction in diversity (12 species to one) and sharp decrease in standing stock (12.84 Â 10 3 to 8.86 Â 10 6 cells/L) during this period. The late bloom condition coincided with sudden and huge arrival of a clupoid fish Hilsa ilisha which forms the most potential fisheries in Sundarban deltaic region. An attempt has been made to correlate the satellite remote sensing-derived information to the bloom conditions. The MODIS-Aqua derived chlorophyll and TMI satellite derived sea surface temperature and wind speed maps have been interpreted.
A comprehensive study on phytoplankton dynamics in the coastal waters of Kalpakkam showed a consi... more A comprehensive study on phytoplankton dynamics in the coastal waters of Kalpakkam showed a considerable increase (almost 3 fold) in phytoplankton species composition (185 species) as compared to the earlier findings (60 species). Despite such a massive change in floristic composition, 4-10 times reduction in total cell count was observed during the present study, which varied between 1.7 x 10 5 and 1.5 x 10 6 cells l-1. Another important feature of this study was the observation of Trichodesmium erythraeum bloom in the coastal waters. Concomitant with the bloom, a drastic fall in the number of phytoplankton species was noticed. The change in phytoplankton assemblages (density and species composition) during different seasons was significant and was found to be regulated by the change in water characteristics associated with monsoon. Diatoms dominated the phytoplankton assemblage followed by dinoflagellates. Asterionellopsis glacialis and Thalassionema nitzschioides were found to be dominant species among diatoms and dinoflagellates respectivaly, Prorocentrum micans and Protoperidinium sp. were the dominant forms. Salinity was found to be an important parameter influencing the species composition, standing stock and succession of phytoplankton at this location. Salinity apparently influenced the phytoplankton density positively. Nitrate was found to be the limiting factor for phytoplankton growth during late summer and pre-monsoon periods, whereas, the role of silicate and phosphate remained insignificant in this regard.
Abstract. A little known species of snake eel, Ophichthus lithinus (Jordan et Richardson, 1908), ... more Abstract. A little known species of snake eel, Ophichthus lithinus (Jordan et Richardson, 1908), is reported for
the first time from the east coast of India, Bay of Bengal based on two specimens 632 and 720 mm in total length,
collected respectively at Digha, West Bengal and Kalpakam, Tamil Nadu, India. This is the first attempt to provide
a detailed description of the species from the Indian Ocean. The presently reported findings constitute an
extension of the known distributional range of this species from the Western Pacific to the eastern coast of India.
Marine Pollution Bulletin, 2014
A multispecies bloom caused by the centric diatoms, viz. Coscinodiscus radiatus, Chaetoceros lore... more A multispecies bloom caused by the centric diatoms, viz. Coscinodiscus radiatus, Chaetoceros lorenzianus and the pennate diatom Thalassiothrix frauenfeldii was investigated in the context of its impact on phytoplankton and microzooplankton (the loricate ciliate tintinnids) in the coastal regions of Sagar Island, the western part of Sundarban mangrove wetland, India. Both number (15-18 species) and cell densities (12.3 × 10(3)cellsl(-1) to 11.4 × 10(5)cellsl(-1)) of phytoplankton species increased during peak bloom phase, exhibiting moderately high species diversity (H'=2.86), richness (R'=6.38) and evenness (E'=0.80). The diatom bloom, which existed for a week, had a negative impact on the tintinnid community in terms of drastic changes in species diversity index (1.09-0.004) and population density (582.5 × 10(3) to 50 × 10(3)indm(-3)). The bloom is suggested to have been driven by the aquaculture activities and river effluents resulting high nutrient concentrations in this region. An attempt has been made to correlate the satellite remote sensing-derived information to the bloom conditions. MODIS-Aqua derived chlorophyll maps have been interpreted.
CLEAN - Soil, Air, Water, 2013
ABSTRACT An intense monospecies bloom of the centric diatom Hemidiscus hardmannianus (Greville) M... more ABSTRACT An intense monospecies bloom of the centric diatom Hemidiscus hardmannianus (Greville) Mann. (Bacillariophyceae) occurred in the coastal waters of Sundarban mangrove wetland, India on 22 July, 2010. The species was abruptly flourished (mean density 8.86 × 106 cells/L) resulting intense green coloration of water. The greatest impoverishment of diversity and density of phytoplankton, micro- and mesozooplankton community was observed during the bloom. The phytoplankton community showed an extreme reduction in diversity (12 species to one) and sharp decrease in standing stock (12.84 × 103 to 8.86 × 106 cells/L) during this period. The late bloom condition coincided with sudden and huge arrival of a clupoid fish Hilsa ilisha which forms the most potential fisheries in Sundarban deltaic region. An attempt has been made to correlate the satellite remote sensing-derived information to the bloom conditions. The MODIS-Aqua derived chlorophyll and TMI satellite derived sea surface temperature and wind speed maps have been interpreted.
Socioeconomic developments and industrialization exert tremendous impact on beaches which is ofte... more Socioeconomic developments and industrialization exert tremendous impact on beaches which is often neglected. Heavy metal (Cr, Mn, Co, Ni, Cu, Zn, Cd, and Pb) contents were estimated in the intertidal region from Kalpakkam to Mamallapuram (20 km), southeast coast of India covering seven locations. To evaluate the level of contamination of these metals; enrichment factor (EF), geoaccumulation index (I geo ), contamination factor (CF), pollution load index (PLI) and modified degree of contamination (mCd) were applied. The results were also compared with the sediment quality guidelines (SQGs) to find out the eco-toxicity level. Metal contents in the beach sediment were observed in the order:
After online publication, subscribers (personal/institutional) to this journal will have access t... more After online publication, subscribers (personal/institutional) to this journal will have access to the complete article via the DOI using the URL:
The composition, species richness and diversity of a coastal fish assemblage from the Kalpakkam c... more The composition, species richness and diversity of a coastal fish assemblage from the Kalpakkam coast of south-east India are described along with temporal distribution patterns related to seasonal fluctuations in dissolved oxygen, salinity, pH, chlorophyll-a, phytoplankton and zooplankton species richness and density. A total of 244 fish species belonging to 21 orders, 87 families and 163 genera were recorded. The fish assemblage was dominated by reef-associated species, followed by demersal species. The majority of the species (63%) are widely distributed in the western Indo-Pacific as well as in the central Indo-Pacific. Jaccard's coefficient analysis showed three distinct seasonal patterns of fish occurrence: pre-monsoon (PrM), monsoon (M) and post-monsoon (PoM). The maximum number of species was during the PrM period, followed by the PoM and M periods. Species occurrence analysis showed Sardinella longiceps to be dominant during PrM and M periods, Leiognathus dussumieri during the M period and Secutor insidiator and Secutor ruconius during the M and PoM periods. Canonical correspondence analysis indicated that salinity and rainfall were the two most influential environmental factors strongly correlated with temporal variation in the fish assemblage. The physico-chemical conditions, in combination with factors such as higher food availability and shelter, might control the seasonal local distribution of the ichthyofauna in these Indian coastal waters.
Your article is protected by copyright and all rights are held exclusively by Springer-Verlag. Th... more Your article is protected by copyright and all rights are held exclusively by Springer-Verlag. This e-offprint is for personal use only and shall not be self-archived in electronic repositories. If you wish to self-archive your work, please use the accepted author's version for posting to your own website or your institution's repository. You may further deposit the accepted author's version on a funder's repository at a funder's request, provided it is not made publicly available until 12 months after publication.
Concentrations of Cu, Mn, Zn, Fe, Cr, and Pb were estimated using ICP-MS in nine commercially imp... more Concentrations of Cu, Mn, Zn, Fe, Cr, and Pb were estimated using ICP-MS in nine commercially important and locally consumed fish species (Sarda orientalis, Scomberomorus commerson, Rastrelliger kanagurta, Sardinella longiceps, Paraplagusia bilineata, Cynoglossus lida, Cynoglossus macrostomus, Lepturacanthus savala, and Siganus javus) collected from coastal waters of Kalpakkam, eastern part of India. Their concentration (μg g −1 ) in the examined fish species ranged as follows: Cu (0.8-6.5), Zn (14.3-27.9), Mn (0.5-8.8), Fe (17.6-117.0), Cr (0.24-1.78), and Pb (0.18-2.29). Concentrations of most of the metals in the fish species studied were found to be safe for human consumption barring Mn.
Studies were carried out in the coastal waters of Kalpakkam to monitor the seasonal variation in ... more Studies were carried out in the coastal waters of Kalpakkam to monitor the seasonal variation in Hg concentration. The mercury (Hg) level (dissolved + acid leachable) ranged from 3 to 50 ppb for surface and 1.5 to 47.9 ppb for bottom-water samples, yielding an annual average concentration of 20.42 ± 11.44 and 23.11 ± 13.06 ppb for surface and bottom waters respectively. Strong positive correlation of Hg with salinity and its relatively low concentrations during monsoon and post-monsoon showed that concentration of Hg in this coastal water was mainly of marine origin, indicating absence of any other external source of input. Relatively high Hg concentrations were encountered in bottom samples compared to the surface. Madras Atomic Power Station (MAPS) outfall discharge water did not show elevated Hg level compared to ambient surroundings. The present observed values are significantly lower (30 times) than the earlier reported values from this coast.
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Papers by Kamal Kanta Satpathy
the first time from the east coast of India, Bay of Bengal based on two specimens 632 and 720 mm in total length,
collected respectively at Digha, West Bengal and Kalpakam, Tamil Nadu, India. This is the first attempt to provide
a detailed description of the species from the Indian Ocean. The presently reported findings constitute an
extension of the known distributional range of this species from the Western Pacific to the eastern coast of India.
the first time from the east coast of India, Bay of Bengal based on two specimens 632 and 720 mm in total length,
collected respectively at Digha, West Bengal and Kalpakam, Tamil Nadu, India. This is the first attempt to provide
a detailed description of the species from the Indian Ocean. The presently reported findings constitute an
extension of the known distributional range of this species from the Western Pacific to the eastern coast of India.