Universitas Indonesia Conferences, 2nd International Conference of Science and Applied Geography

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Study of Changes in Seagrass Distribution in Derawan Island in the Year of 2003-2021 Using Remote Sensing Method
Yusuf Nauval Fadhlurahman, Masita Dwi Mandini Manessa, Jarot Mulyo Semedi, Anisya Feby Efriana

Last modified: 2022-11-19

Abstract


The beauty of the shallow sea waters of Derawan Island created an incredible attraction for tourists. The construction of inns and docks on Derawan Island has made accommodations and accessibility. However, the impact of the development of inns and piers has a brunt on changes in the area of ​​seagrass beds around shallow waters. The research is to notion changes in the distribution of seagrass beds in terms of area and density from 2003, 2011, and 2021 along with the effect of the construction of lodging facilities and docks on the distribution of seagrass beds. The data were collected using a field survey using the photo transect method. The benthic habitat map was processed in Google Earth Engine using the Lyzenga water column correction algorithm and the unsupervised classification method. The Normalized Difference Building Index algorithm and land digitization were applied to see the development of the inn and pier. The construction of lodging facilities and docks in Derawan Island showed a rapid and evenly distributed increase in the entire southern region of the island. The Results show that seagrass meadows degrade from 2003 to 2021 which reduces the density level, especially when approaching the coastline in the southern region.