Human-induced eutrophication, or nutrient overenrichment, is a rapidly growing environmental crisis in freshwater and marine systems worldwide. Nutrients that cause eutrophication include nitrogen and phosphorus.

Climate change impacts such as more frequent and severe floods and droughts will affect the food and water security of many people. The impact of climate change on aquatic ecosystems, fisheries and aquaculture, however, is not as well known.

The Code of practice for fish and fishery products is intended for all those engaged in the handling, production, storage, distribution, export, import and sale of fish and fishery products. The Code will help in attaining safe and wholesome products that can be sold on national or international markets and meet the requirements of the Codex Standards.

There has been growing concern over conversion of coastal rice paddies to shrimp farms. This study estimates the external cost of shrimp-induced salinity on crop production by comparing two villages in southern India: Poovam, which is affected by salinity, with Thiruvettakudy, which is not.