Though acquatic weeds such as water hyacinth play a vital role in the acquatic ecosystem, congestion of the weeds in wetlands could hamper the general productivity of the ecosystem.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/water-hyacinth-potential-organic-manure
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/assam-tribune-guwahati
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ecosystems
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wetlands
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/agriculture
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/organic-farming
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vermiculture
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/natural-fertilisers
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/weeds
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/fisheries
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/assam