On the basis of hydrochemical and biological studies, a trophic gradient has been established between the inshore and the offshore areas of the Dal lake. The inshore areas receive large quantities of raw sewage and agricultural runoff as a result of which high nutrient concentration of water and the presence of dense phytoplankton populations have been registered at these sites.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/eutrophic-gradient-dal-lake-kashmir
[2] http://admin.indiaenvironmentportal.org.in/category/author/d-p-zutshi
[3] http://admin.indiaenvironmentportal.org.in/category/author/u-khan
[4] http://admin.indiaenvironmentportal.org.in/category/journal/indian-journal-environmental-health
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/lake-pollution
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/dal-lake
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/waste-disposal
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/jammu-kashmir