UM ISLAND^S ECOLOGICAL VULNERABILITY INDEX DISTRICT MAKBON SORONG REGENCY
Ilham Marasabessy(a*), M. Iksan Badarudin (b), Reinier B Hitalessy (a), Barnabas Wurlianty (a) Ellen loupatty (a) Ferdinanda Iek (c))

(a) Management of Aquatic Resources, Universitas Muhammadiyah Sorong.
Jl. Pendidikan No. 27, Km. 8 Kota Sorong, Indonesia
*illo.marssy[at]gmail.com
(b) Processing of Fishery Products. Universitas Muhammadiyah Sorong
(c) Student of Management of Aquatic Resources, Universitas Muhammadiyah Sorong.

Abstract

Um Island as a small, uninhabited island tends to experience high vulnerability, the coastal and marine ecosystems in this area are the most affected by climate change due to global warming and human activities. The impact received by the coastal area of Um Island due to this phenomenon is something that needs to be studied to identify it spatially and temporally to project changes in the vulnerability of the coastal area in the future. The research was conducted from August to September 2020 on Um Island, Makbon District, Sorong Regency. Using the cross section method, through descriptive and explanatory surveys. The data were collected by means of purposive sampling, ecology and physics of oceanography, carried out in situ. Spatial analysis uses RBI maps and Landsat 8 satellite imagery to produce a map of the landscape and potential ecosystems of the island of Um. The threat of damage occurring in the area of Um Island at this time is the occurrence of erosion / abrasion in the eastern part of Um Island. The level of vulnerability that occurs in Um Island is still in the low category (IK-PPK = 2.67). This value is caused by the low Exposure index, even though the other two indices show a vulnerable condition. The IK-PPK assessment is dynamic, so there is a possibility that the value may change in the future. Improvement of the coastal ecosystem condition is the main step in order to avoid an increase in the level of vulnerability, especially in the eastern part of the island of Um.

Keywords: Coastal Ecology, Small Island, Vulnerability

Topic: Physics, Biology, and Chemistry