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Waters around Mumbai, India indicate population stress
Unprecedented increase of human activities has imposed considerable stress on the surrounding marine environment in and around Mumbai, including Mumbai harbour. As is known, Mumbai is one of the fastest growing city of India. Its population has increased from 4 million in 1960 to 18.3 million as per 2001 census and projected to increase to 22.4 million in 2011. This is naturally going to place stress on the infrastructure, environment, etc. In a recent study conducted by the scientists of NIO, the marine environment of Mumbai and Jawaharlal Nehru ports was monitored for some environmental and biological parameters during three different periods between 2001 and 2002. The results are compared with the records available since 1960s. With the passage of time the environmental status underwent changes, probably due to the increase in anthropogenic activities in the metropolis. The nutrient level especially the nitrate concentration has increased gradually over the years with a simultaneous decrease in dissolved oxygen, indicating increase in the biological activity. Characterization of this environment based on Assessment of Estuarine Trophic Status (ASSETS) model indicates that the current status is poor and may get worsen in future if no appropriate management policies are put into place. For more information, please read: Sawant, S.S.; Prabhudessai, L.; Venkat, K. Eutrophication status of marine environment of Mumbai and Jawaharlal Nehru ports. Environ. Monit. Assess.: 127(1-3); 2007; 283-291.
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