This research focus on how global changes impact marine and estuarine fish and fisheries, and the people depend on them. The aspect of global climate change is the magnitude of the impact of relatively. An increase of a few degrees in atmospheric temperature will not only raise the temperature of the ocean, but also cause major hydrologic changes affecting the physical and chemical properties of water. These will lead to fish, invertebrate, and plant species changes in marine and estuarine communities. Three different regions of the world’s ocean: temperature, polar, and tropical and three types of harvesters exploit fish stocks: subsistence, commercial, and recreational. These all may be impacted (negatively and/or positively) by changes in fish stocks due to climate change. Other affected include boundaries of marine protected area, low-lying island countries depend on coastal economics, and disease. All stem from relatively small rise in temperature.
Many naturally occurring compounds from the Earth’s crust and waters are added to atmosphere. Recently, chemical influx and efflux have been driven by non-anthropogenic. However, since the Industrial Revolution, many compounds that naturally existed in small quantities have been mass produced and added to our atmosphere through anthropogenic activities. It is greenhouse gases, such as CO2, CH4, N2O, CFCs, VOCs, absorb incoming solar energy and outgoing radiant energy.