Management of aquatic resources in the tropics.
1986
Soerjani M.
Water is one of the most important environmental resources for all life. Yet, it is very susceptible to interference by man, and can be easily polluted. One of the pollutants or pollution indicators is excessive growth of aquatic weeds. The weeds may function appropriately by diversifying and stabilizing the community, or they may be detrimental depending on the use, purpose and management of the water. In most cases, the overwhelming detrimental impact may result in effective control methods by destroying the biomass. The more recent approach is to manage the weed biomass as a wasted resource and optimize its potentials to be utilized for various purposes. These include its use as a food source for fish by the introduction of appropriate herbivorous fish in absorbing pollutants from the water; and harvesting the biomass for compost, biogas, domestic animal feed, mushroom culture, pulp for carton and paper, and for handicrafts. The methods should be used in conjunction with other conventional control methods, e.g., the use of herbicides to convert the biomass into detritus or to stimulate plankton growth. This will diversify the productivity of the entire water resource. Aquatic vegetation management must be developed as part of the overall aquatic resource management based on the amenity fresh water system which refers mainly to the social and environmental function of the water. The system must be managed properly based on social agreeableness, social pleasures and other agreeable pursuits.
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