GIS-based approach for quantifying landscape connectivity of Javan Hawk-Eagle habitat

4th International Symposium on LAPAN-IPB Satellite for Food Security and Environmental Monitoring

农业科学;生态环境科学

Nurfatimah, C.^1 ; Syartinilia^1 ; Mulyani, Y.A.^2

Landscape Architecture Department, Faculty of Agriculture, Bogor Agricultural University (IPB), Jl. Meranti, Kampus IPB, Darmaga, Bogor

16680, Indonesia^1

Department of Forest Resource Conservation and Ecotourism, Faculty of Forestry, Bogor Agricultural University (IPB), Jl. Ulin, Kampus IPB, Darmaga, Bogor

16680, Indonesia^2

关键词: Connectivity indices;    Conservation management;    Degree of connectivity;    Habitat patches;    Landscape connectivities;    Natural forests;    Species extinction;    Surrounding matrix;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/149/1/012017/pdf
DOI  :  10.1088/1755-1315/149/1/012017

来源: IOP

【 摘 要 】

Javan Hawk-Eagle (Nisaetus bartelsi; JHE) is a law-protected endemic raptor which currently faced the decreased in number and size of habitat patches that will lead to patch isolation and species extinction. This study assessed the degree of connectivity between remnant habitat patches in central part of Java by utilizing Conefor Sensinode software as an additional tool for ArcGIS. The connectivity index was determined by three fractions which are infra, flux and connector. Using connectivity indices successfully identified 4 patches as core habitat, 9 patches as stepping-stone habitat and 6 patches as isolated habitat were derived from those connectivity indices. Those patches then being validated with land cover map derived from Landsat 8 of August 2014. 36% of core habitat covered by natural forest, meanwhile stepping stone habitat has 55% natural forest and isolated habitat covered by 59% natural forest. Isolated patches were caused by zero connectivity (PCcon = 0) and the patch size which too small to support viable JHE population. Yet, the condition of natural forest and the surrounding matrix landscape in isolated patches actually support the habitat need. Thus, it is very important to conduct the right conservation management system based on the condition of each patches.