Abstract
The life of coastal communities is always associated with water. Anafre River estuary is one of the river estuaries that empties directly into the Gulf of Yos Sudarso. The amount of particles swept away and buried in estuary sedimentation Anafre inflicts not only the river but the Gulf of Yos Sudarso. Declining water quality of the Gulf of Yos Sudarso is caused by the influx of water from the Anafre River, whereas all Anafre River watersheds are located in close proximity to residential areas. This study aims to determine the level of public knowledge on the effects of sedimentation and community based management. Data are collected by field observations and interviews with the community, and analyzed using the qualitative descriptive method. The results showed that the community plays an active role in the maintenance and utilization of the Yos Sudarso area, because the gulf of Yos Sudarso serves as transportation routes, tourist areas, and workplaces (fishermen). The maintenance of water environment in river estuaries and the gulf is based on the principles of awareness and cooperation without ignoring the people's culture.
Highlights
Anafre river is one of the rivers in the city of Jayapura which empties into the Gulf of Yos Sudarso
Declining water quality of the Gulf of Yos Sudarso is caused by the influx of water from the Anafre River, whereas all Anafre River watersheds are located in close proximity to residential areas
The results showed that the community plays an active role in the maintenance and utilization of the Yos Sudarso area, because the gulf of Yos Sudarso serves as transportation routes, tourist areas, and workplaces
Summary
The formation of sedimentation in the Anafre river channel Anafre has caused changes in river conditions and characteristics (sandy soil), with significant the elevation difference between the upstream and downstream. Sedimentation impacts the Anafre estuary and the Gulf of Yos Sudarso. The Gulf of Yos Sudarso is an area of passenger port and capital goods as sea transportation for people moving in and out of Papua to other regions, as well as transport ships carrying containers to various destinations along the Yos Sudarso bay, Because the gulf lies in the downstream, the flow at the mouth is greater than the upstream; as a result, streams carry large sediments and materials increase in volume. The approach does not take into account the interaction between ecological principles and culture This is feared to cause imbalance in the management areas that are not environmentally friendly. This study aims to determine the level of public knowledge on the effects of sedimentation and community-based water management
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