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All Journal Biota: Jurnal Ilmiah Ilmu-Ilmu Hayati
Danang Wahyu Purnomo
Wildlife Laboratory, Faculty of Forestry, Gadjah Mada University, Jl. Agro, Sekip Utara, Yogyakarta, 55282. Email: dnabdz@yahoo.com
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Karakteristik Habitat Banteng (Bos javanicus d'Alton, 1823) di Resort Rowobendo Taman Nasional Alas Purwo Danang Wahyu Purnomo; Satyawan Pudyatmoko
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 16, No 1 (2011): February 2011
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/biota.v16i1.55

Abstract

Fragmentasi habitat dan perburuan liar telah menyebabkan penurunan populasi alami banteng. Sementara itu, sistem pengelolaan habitat di Taman Nasional Alas Purwo tidak sesuai dengan karakter tiap-tiap tipe habitat yang ada. Penelitian ini bertujuan mengidentifikasi karakter habitat yang dapat memberikan informasi tentang pemilihan habitat oleh banteng dan faktor-faktor yang memengaruhinya. Karakter habitat diestimasi menggunakan dua pendekatan, yaitu habitat-categorizing dan site-categorizing. Habitat-categorizing adalah seleksi tipe habitat yang menunjukkan peluang beberapa tipe habitat untuk dipilih banteng. Adapun site-categorizing adalah seleksi sumber daya pada suatu lokasi oleh banteng. Tipe habitat yang memiliki peluang tertinggi untuk dipilih banteng adalah savana (nilai standar seleksi B=0,59). Savana memiliki sumber daya melimpah terutama jenis-jenis pakan, yaitu rumput lamuran (Arundinella setosa) dan merakan (Andropogon contortus) yang dikonsumsi oleh banteng, dibandingkan tipe habitat lainnya. Tipe habitat lain yang sering digunakan banteng adalah hutan pantai (B=0,173) dan hutan rawa (B=0,126). Tiga variabel habitat yang memengaruhi pemilihan sumber daya adalah kerapatan rumput (peluang seleksi expß=1,036), kerapatan tiang (expß=1,002), dan penutupan tajuk (expß=0,977).
Penentuan Pakan Rusa Bawean dengan Analisis Kotoran, di Pulau Bawean Djuwantoko Djuwantoko; Danang Wahyu Purnomo
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 13, No 3 (2008): October 2008
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/biota.v13i3.2572

Abstract

The research was conducted in the Bawean island, East Java, where endemic Bawean deer’s inhabited naturally. The objective was to assess what kind of plant species as food resources in natural habitat of Bawean deer. The most Bawean deer habitats particularly lowland forests, are under the greatest pressure. Logging and land conversion have caused dramatic decreases in the forest cover of Bawean island, mainly in lowland, and forest margins are progressively shifting towards higher elevations. In that conditions, therefore a management practices should be implemented soon, for improving deer habitat. This study was focused on availability of food resources in the natural habitat of Bawean deer. Using indirect methods in the field to assess the remaining of food resources, which was consumed by Bawean deer, and fecal analysis was executed for identifying food deer items. The result, there were many species of plants as a food resources including Imperata cylindrical (lalang), Pericampylus glaucus (ancucu), Caryota mitis (andudur), Discorea hispida (gadung), Symplocos adenophylla (kayu sape), Coelorhachis muricata (lampedung), Scheria hebecarpa (lanting-lantingan), Paspalum cunyugatum (lambu merah), Argyera mollis (rombok putih), Lygodium circinnatum (taliata), Nephrolepis hirsitula (rending-rendang), Tridax procumbens (kenci-kencian), Brachiaria distachya (kabak-kabakan alas), Frimbrisyllis dichotoma (lente-lentean). The availability of those food resources was affected by season i.e., dry and rainy season, and the feeding habit of Bawean deers can allow adapting to the habitat condition. Based on that figure the Bawean deers may have so many several of food items in their natural habitat.
Tipe Habitat Kesukaan Rusa Timor (Rusa timorensis) di Hutan Wanagama I Danang Wahyu Purnomo; Djuwantoko Djuwantoko; Satyawan Pudyatmoko
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 15, No 2 (2010): June 2010
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/biota.v15i2.2709

Abstract

Wanagama I Forest (599.7 ha) is a research and education forest which is the habitat of Timor Deer (Rusa timorensis). The deer population has been breeding naturally. The habitat changes have affected to the deer in selecting the resources in its habitat and have caused the deer moving out from the forest to the more strategic area, i.e. agricultural and settlement. We suspected that the case happened because of the habitat quality degradation in the forest. The research was aimed to identify habitat types preferred by deer that were called Habitat Preference. Habitat preference was analyzed by habitat selection that was estimated using habitat-categorizing approaches (Alldredge, Thomas, and Mcdonald, 1998; Manly et al., 2002). Habitat selection was identified by chi-square test and the preference index was estimated by selection ratio index. The result of habitat-categorizing analysis showed that there was a habitat selection by the deer (chi-square test X2=15.23, α=0.05). Block 5 (selection standardized index, B=0.220), Block 17 (B=0.212), and Block 14 (B=0.149) were the habitat types which had high probability selected by the deer for their activities.
Co-Authors Djuwantoko Djuwantoko Satyawan Pudyatmoko