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 Bengal in the course of the Indian Sundarban delta.

Small Island Developing States are experiencing some of the earliest and most severe impacts of climate change.

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 near coastal seabed, are being deposited overe the ancient clayey silt bed depending on retreat of high water line and relief. The shoreline has been retreated by about 450 m to 1 km.

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 challenges on which further informat

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 in LC0 and LC50 group of clams while foot, male gonad and female gonad exhibited considerable decrease in protein content. Whereas, in LC0, mantle showed high protein content. In LC50 group, hepatopancreas exhibited high protein content.

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 Bay of Bengal at Paradip. Paradip Township is an urbanized well-developed industrial township where various anthropogenic activities are contributing pollution to the water sources.

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 demonstrates that nutrient enrichment, a global problem for coastal ecosystems, can be a driver of salt marsh loss.

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 skewed, whereby a small section of the population with access to capital has enjoyed substantial benefits and a large majority of the population was left out of the development trajectory.

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