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providing nursery areas and refuge for fish, substrate for invertebrates and epiphytes, food for endangered species such as the manatee, and functions as a water filter by converting nutrients present in the water into new plant material. The assessment includes identification and mapping of areas where SAV exist within the basin and determination of growth characteristics. These findings are then related to water and sediment quality characteristics. In this way, water quality can be managed, through permitting and regulations, to protect and



assessments of







communities, and examinations of primary productivity and nutrient limitation. The first step in accomplishing this is consistent monitoring of ambient water quality. A multi-agency task force which coordinates the collection of water quality data may be organized ensuring that there is a minimum of redundancy and that data collection and constituents are uniform and compatible among agencies. In addition to the routine monitoring of ambient water quality basin wide, there are special studies which intensively examine water quality in priority locations and under special conditions. These include storm water sampling, point source discharge sampling and sampling in conjunction with other studies such as sediment and biological assessments. A second major component of this effort is the development of water quality models. The Plan includes programmers.

  • 1.

    To identify the relation between climate changes and human activities including pollution to the effect of hydrological cycle and environment degradation, and poverty, and assess the effect of re-vegetation policy.

  • 2.

    To figure out the ecosystem water demand for the heavy-and-coarse sediment yield area in Riverine and estuarine area

  • 3.

    To put forward effective methods environment protection and ecosystem restoration for headwater region as well as important river reaches including the estuary area.

  • 4.

    To formulate effective water pollution control schemes for Periyar River Basin to ensure the food security and health.

Study areas The Periyar River basin in the Eloor Edayar Region The estuary area of Periyar Topics

1. Valuation of Ecosystem goods and services, and the cost of degradation . What are the monetary and non-monetary values of ecologic system How does the long-term run off influence the aquatic ecology and wetland in the estuary? What are the social and economic consequences of the degradation of aquatic ecosystems in the headwater region and heavy-and-coarse sediment yield area? 2. The ecosystem and environment protection and restoration in Study area The environment evolution trend of the headwater region and heavy-and coarse sediment source area To quantify the environmental water demand of the headwater region and heavy-and- coarse sediment yield area? To quantify water requirement of the typical measures of soil and water conservation in heavy-and coarse sediment yield area, and the sediment yield reduction due to soil and water conservation

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