A habitat selection model for Javan deer (Rusa timorensis) in Wanagama I Forest, Yogyakarta

DANANG WAHYU PURNOMO

Abstract. Purnomo DW. 2010. A Habitat selection model for Javan deer (Rusa timorensis) in Wanagama I Forest, Yogyakarta. Nusantara Bioscience 2: 84-89. Wanagama I Forest is the natural breeding habitat of Javan deer (Rusa timorensis de Blainville, 1822). Habitat changes had affected Timor’s resource selection and caused the deer to move from undisturbed areas to developed areas with agriculture and human settlements. We suspected that this shift was caused by the degradation of natural habitat. The research aimed to identify factors that might influence future habitat selection. Habitat selection was analyzed by comparing proportions of sites actually used to sites that we considered available to use. The results of a logistic regression of site categories showed there are three habitat variables that influence resource selection: sum of tree species (expß=1.305), slope (expß=1.061), and distance to a water source (expß=1.002). The three variables influence the deer existing in a certain site of Wanagama Forest and arrange resource selection probability function (RSPF).
Key words: habitat selection, Rusa timorensis, Wanagama I Forest.

Abstrak. Purnomo DW. 2010. Model seleksi habitat rusa (Rusa timorensis) di Hutan Wanagama I, Yogyakarta. Nusantara Bioscience 2: 84-89. Hutan Wanagama I merupakan habitat rusa (Rusa timorensis de Blainville, 1822) yang populasinya berkembang biak secara alami. Perubahan habitat telah mempengaruhi populasi rusa dalam memilih sumber daya di habitatnya dan telah menyebabkan rusa bergerak keluar dari hutan menuju daerah yang lebih strategis, yaitu di lahan pertanian dan pemukiman. Kami menduga bahwa kasus ini terjadi karena degradasi kualitas habitat di dalam hutan. Penelitian bertujuan untuk mengidentifikasi berbagai faktor yang mempengaruhi pemilihan habitat rusa. Seleksi habitat dianalisis dengan membandingkan proporsi antara used dan availability dengan menggunakan site-categorizing. Hasil analisis site-categorizing menggunakan regresi logistik menunjukkan bahwa terdapat tiga variabel habitat yang mempengaruhi pemilihan sumber daya, yaitu jumlah spesies pohon (expß = 1,305), kemiringan (expß = 1,061), dan jarak sumber daya air (expß = 1,002). Tiga variabel tersebut mempengaruhi kehadiran rusa di site tertentu di Hutan Wanagama I dan menyusun fungsi probabilitas seleksi sumber daya (RSPF).
Kata kunci: seleksi habitat, Rusa timorensis, Hutan Wanagama I.

Download Full Text

This entry was posted in Jurnal and tagged , , . Bookmark the permalink.

Leave a Reply

Your email address will not be published. Required fields are marked *