Report filed on behalf of Greater Chennai Corporation regarding pollution of Adyar estuary. Under the Chennai Rivers Restoration Trust (CRRT) project of eco restoration of Cooum river, construction of compound wall, boundary fence of the Cooum river have been taken up for a length of 23.92 km for preventing encroachments …
Surface and ground water are systems linked with each other. In coastal region salanization problem is significant for groundwater contamination. The transition of ground water in to the surface waters contributes a noticeable change in teh ground water environment besides heavy metal cycling. Due to natural and anthropogenic activities the …
In the present study, efforts have been made to analyze selected physico-chemical characteristics of the water bodies of Uppanar estuary and Periyavaikkal region of Killai backwater area, Cuddalore District, Tamilnadu India. The comparative analytical study was conducted for one calendar year and water samplings were done on monthly basis. The …
The study was conducted to estimate total mercury in water and sediment of Bidyadhari river of Indian Sundarban delta in pre-monsoon, monsoon and post-monsoon period. Bidyadhari river presently serves as a sewage and excess rainwater outlet from the Kolkata metropolitan and adjacent area which ultimately empties at the Bay of …
Small Island Developing States are experiencing some of the earliest and most severe impacts of climate change. Through a series of case studies illustrated with compelling satellite imagery, a new publication documents environmental changes in estuaries, mangroves, corals, coastlines and forests; as well as different approaches to land use and …
The swampy intertidal zone and part of the backshore of Henry's Island coast of 1969 have now been submerged. Topographic surveys, analysis of textural and palynological character of sediments coupled with time-series analyais of shoreline change show phasewise erosion. This has resulted in ingression of sea. Modern sand, transported from …
In December 2013, the Airports Commission identified that while an Inner Thames Estuary location had the potential to provide a significant reduction in the noise impacts compared to most of the phase 1 options and create economic and regeneration activity in north Kent and Essex, it also presented some clear …
Cypermethrin is a synthetic pyrethoid mainly used against mango insect pests. Clams are good indicators of pesticide pollution and are known to be tolerant to pesticide accumulation. Acute toxicity experiment of Cypermethrin is carried out on estuarine clam, Marcia opima. The clam exhibited significant increase in protein content of gill …
The two major sources which are contributing to marine pollution are natural processes as well as anthropogenic activities. The natural process includes precipitation, erosion, weathering of crystal material whereas anthropogenic activities are urbanization, industrialization, mining and agricultural activities, etc. Mahanadi is the biggest river source of Odisha which joins the …
Invasion of lionfish Pterois volitans and other reef fishes in the Vellar estuary, Parangipettai (lat.11°29′N, long. 79°46′E) southeast coast of India, is a cause of concern as it may affect the local fishing communities and the estuarine ecological conditions. Original Source
Salt marshes are highly productive coastal wetlands that provide important ecosystem services such as storm protection for coastal cities, nutrient removal and carbon sequestration. Despite protective measures, however, worldwide losses of these ecosystems have accelerated in recent decades. Here we present data from a nine-year whole-ecosystem nutrient-enrichment experiment. Our study …
Prawn and fish farming is an important source of income and employment for the local populace in the Sunderban region in West Bengal. These have led to a dynamism in the local economy in these areas. The results of this study suggest that the impact of this development has been …
More than 10.86 Million Indians depend on rivers, wetlands, floodplains, estuaries, ponds and tanks for subsistence and market-based fisheries. Though the absolute contribution of riverine fisheries may not be huge in economic terms, it is a very crucial component in livelihood and nutritional security of the rural poor. With declining …
Human land cover can degrade estuaries directly through habitat loss and fragmentation or indirectly through nutrient inputs that reduce water quality. Strong precipitation events are occurring more frequently, causing greater hydrological connectivity between watersheds and estuaries. Nutrient enrichment and dissolved oxygen depletion that occur following these events are known to …
This study evaluated the persistence of heavy metals, cadmium (Cd), lead (Pb) and mercury (Hg) in surficial marine sediments and their relationship with textural characteristics. Furthermore, heavy metal distribution was studied against organic carbon concentration within the sediments. Our results suggest that Cochin estuary is highly polluted in the case …
Accumulating evidence shows that the planet is warming as a response to human emissions of greenhouse gases. Strategies of adaptation to climate change will require quantitative projections of how altered regional patterns of temperature, precipitation and sea level could cascade to provoke local impacts such as modified water supplies, increasing …
The groundwater chemistry in the shallow aquifers of the coastal zone of Thiruvananthapuram district, Kerala, India have been examined in detail. Results, in general, indicate that the groundwaters is more or less deteriorated.
Physico-chemical characteristics of Rajakkamangalam estuary situated in Kanyakumari district of Tamil Nadu and its sediment samples were collected in 4 sampling stations in 2001.
Oysters play important roles in estuarine ecosystems but have suffered recently due to overfishing, pollution, and habitat loss. A tradeoff between growth rate and disease prevalence as a function of salinity makes the estuarine salinity transition of special concern for oyster survival and restoration. Estuarine salinity varies with discharge, so …
This study is a humble attempt to project the evolving environmental crisis faced by the people of the most advanced urban city, Cochin, of the state of Kerala. Cochin backwaters provide the natural energy to the city's economic and social life and its degradation therefore is a matter of concern …
The Indian Ocean (IO) extends over 30% of the global ocean area and is rimmed by 36 littoral and 11 hinterland nations sustaining about 30% of the world's population. The landlocked character of the ocean along its northern boundary and the resultant seasonally reversing wind and sea surface circulation patterns …
