Ecological Impacts of Oil-Palm Plantation on Butterfly and Bird Species Diversity

The expansion of oil-palm plantations in Indonesia is often blamed as the driving causes of deforestation and impacts on environmental changes including the destructed biodiversity. Our understanding regarding environmental impacts on biodiversity is still limited. We address this issue by examining the diversity of butterfly and bird species under two type habitat conditions in Central Borneo. We calculated the butterfly and bird species number, richness, evenness, similarity, and composition inside the established oil-plantation area comprising four large-scale plantations and seven smallholding plantations, as habitat after plantation establishment.  In comparison, we did so similarly inside secondary forest and shrubs, as habitat before oil-palm plantation establishment.  Our results revealed that the habitat after plantation establishment exhibited a higher number of butterfly and bird species than the habitat beforehand.  However, the richness, evenness, and similarity indices for the species revealed variations, which were affected by dominant species in two habitats.  The establishment of oil-palm plantation brought about significant impacts on the composition of species and affected the species similarities between two habitats. The oil-palm plantation landscape and reserved forest vegetation were essential in supporting diversity and ecological role of species on habitat condition after oil-palm plantation establishment

KEANEKARAGAMAN SPESIES HERPETOFAUNA PADA BERBAGAI TIPE TUTUPAN LAHAN DI LANSEKAP PERKEBUNAN SAWIT: Studi Kasus di PT. BLP Central Borneo

The expansion of oil palm plantations in Indonesia is often blamed as the drivers of natural resource destruction and decrease the tropical biodiversity. Herpetofauna is one of biodiversity on oil palm plantation, but information about its species diversity is still limited. This research was aims to reveal the variation of diversity of Herpetofauna on oil palm landscape in central Borneo. Field inventory was conducted on seven types of land cover i.e. young oil palm, mature oil palm, old oil palm, High Conservation Value area, secondary forest, shrubs, and smallholder plantation. We used Visual Encounter Method to invent Herpetofauna spesies on all land cover type. This study reveal that the diversity of Herpetofauna species in PT BLP varies by land cover type. The land cover types of HCV and Secondary Forest have the largest number of species (12 species). Secondary Forest is the type of land cover with the highest abundance among other types of land cover, followed by old oil palm plantations. The oil palm plantations lanscape with different type of land cover can be part of the habitat for several Herpetofauna species and managed for sustainable oilpalm scheme

Penentuan Sistem Penangkaran Rusa Timor (Rusa Timorensis De Blainville 1822) Berdasarkan Jatah Pemanenan Dan Ukuran Populasi Awal

Harvest quota and population size could be used to determine deer captive breeding system. Development Center of Deer Captive Breeding Technology at Dramaga Research Forest (DRF) is one of captive breeding projected to be one of professional institution that produce deer offspring for conservation and commercial requirement. The objective of this research was to determine deer captive breeding system harvestbased on harvestharvest quota and initial population size at Dramaga Research Forest. Data and information were collected by literature study and field observation during February until April 2009. The result revealed that based on minimal harvest quota and initial population size, and considering of carrying capacity, semi intensive system (SS) was the best deer captive breeding system alternative for DRF

PENENTUAN SISTEM PENANGKARAN RUSA TIMOR (Rusa timorensis de Blainville 1822) BERDASARKAN JATAH PEMANENAN DAN UKURAN POPULASI AWAL

Harvest quota and population size could be used to determine deer captive breeding system. Development Center of Deer Captive Breeding Technology at Dramaga Research Forest (DRF) is one of captive breeding projected to be one of professional institution that produce deer offspring for conservation and commercial requirement. The objective of this research was to determine deer captive breeding system harvestbased on harvestharvest quota and initial population size at Dramaga Research Forest. Data and information were collected by literature study and field observation during February until April 2009. The result revealed that based on minimal harvest quota and initial population size, and considering of carrying capacity, semi intensive system (SS) was the best deer captive breeding system alternative for DRF. Keywords: rusa deer, harvest quota, population size, captive breeeding syste

Ecological Impacts of Oil-Palm Plantation on Butterfly and Bird Species Diversity

The expansion of oil-palm plantations in Indonesia is often blamed as the driving causes of deforestation and impacts on environmental changes including the destructed biodiversity. Our understanding regarding environmental impacts on biodiversity is still limited. We address this issue by examining the diversity of butterfly and bird species under two type habitat conditions in Central Borneo. We calculated the butterfly and bird species number, richness, evenness, similarity, and composition inside the established oil-plantation area comprising four large-scale plantations and seven smallholding plantations, as habitat after plantation establishment.  In comparison, we did so similarly inside secondary forest and shrubs, as habitat before oil-palm plantation establishment.  Our results revealed that the habitat after plantation establishment exhibited a higher number of butterfly and bird species than the habitat beforehand.  However, the richness, evenness, and similarity indices for the species revealed variations, which were affected by dominant species in two habitats.  The establishment of oil-palm plantation brought about significant impacts on the composition of species and affected the species similarities between two habitats. The oil-palm plantation landscape and reserved forest vegetation were essential in supporting diversity and ecological role of species on habitat condition after oil-palm plantation establishment

Ecological Impacts of Oil-Palm Plantation on Butterfly and Bird Species Diversity

The expansion of oil-palm plantations in Indonesia is often blamed as the driving causes of deforestation and impacts on environmental changes including the destructed biodiversity. Our understanding regarding environmental impacts on biodiversity is still limited. We address this issue by examining the diversity of butterfly and bird species under two type habitat conditions in Central Borneo. We calculated the butterfly and bird species number, richness, evenness, similarity, and composition inside the established oil-plantation area comprising four large-scale plantations and seven smallholding plantations, as habitat after plantation establishment. In comparison, we did so similarly inside secondary forest and shrubs, as habitat before oil-palm plantation establishment. Our results revealed that the habitat after plantation establishment exhibited a higher number of butterfly and bird species than the habitat beforehand. However, the richness, evenness, and similarity indices for the species revealed variations, which were affected by dominant species in two habitats. The establishment of oil-palm plantation brought about significant impacts on the composition of species and affected the species similarities between two habitats. The oil-palm plantation landscape and reserved forest vegetation were essential in supporting diversity and ecological role of species on habitat condition after oil-palm plantation establishment

Indikator Ekologis sebagai Dasar Penentuan Sistem Zonasi Taman Nasional Batang Gadis

Zonasi Taman Nasional Batang Gadis (TNBG) yang ada dinilai sudah tidak sesuai dengan kondisi saat ini sehingga perlu ditinjau kembali. Penelitian ini bertujuan untuk menyusun indikator ekologis sebagai dasar pengelolaan zonasi TNBG. Pengumpulan data dikumpulkan melalui data sekunder dan data primer antara lain melalui pengamatan di lapangan. Data yang dikumpulkan meliputi kondisi ekologis dan sistem zonasi TNBG, dasar penetapan kriteria dan indikator zonasi taman nasional, data tumbuhan dengan metode garis berpetak dan satwaliar dengan metode variable circular plots. Hasil penelitian adalah tersusunnya 52 indikator ekologis untuk tiga zona utama di TNBG, yaitu 15 indikator untuk zona inti bagian Utara, 12 indikator untuk zona inti bagian Selatan, sembilan indikator untuk zona rimba bagian Utara, delapan indikator untuk zona rimba bagian Selatan, dan delapan indikator untuk zona pemanfaatan. 52 indikator hanya dua indikator yang tidak sesuai dengan indikator acuan, yaitu terdapatnya lahan terbuka (bekas tebangan) pada zona rimba, dan, wilayah yang merupakan bagian ruang jelajah rusa (Rusa unicolor Kerr.) dan macan dahan (Neofelis nebulosa Griffith.) di zona pemanfaatan. Indikator ekologis utama meliputi keberadaan, keanekaragaman, dan kepadatan spesies penting dari kategori dilindungi, langka, spesies payung, endemik, dan flagship species

Pendugaan Biomassa Dan Kandungan Karbon Pada Batang Tanaman Eucalyptus Grandis Di PT. Toba Pulp Lestari, Aek Nauli, Sumatera Utara

Peneitian untuk menduga biomassa dan kandungan karbon batang Eucalyptus grandis telah di laksanakan di PT. Toba Pulp Lestari,Aek Nauli, Sumatra Utara. data di ambil dari 32 pohon contoh dengan kelompok umur 1-2, 3-4, 5-6 dan 7-8 tahun. Biomassa dan kandungan karbon diduga dengan menggunakan persamaan: B = 0.292D0,67P1,20 untuk biomassa dan C = 0,074D 0,894P1,09 untuk karbon. untuk alasan kepraktisan dan keefektifan pengambilan data di lapangan, dapat menggunakan persamaan B = 0,090D2,341 untuk biomassa dan C = 0,025D2,413 Untuk karbon . Biomasa batang ekaliptus rata - rata umur 2,17;3,17;5,25 dan 7 tahun masing - masing adalah 8.01;14,01;52,71 dan 48,84 tan/ha sedangkan karbon masing - masing adalah 2,66;4,67;17,84tan/ha

Rasionalisasi Zonasi Taman Nasional Bukit Tigapuluh: Penerapan Kriteria dan Indikator Zonasi Serta Tingkat Sensitivitas Ekologi

Penelitian yang dilakukan di Taman Nasional Bukit Tigapuluh (TNBT) ini bertujuan untuk mendapatkan alternatif rasionalisasi batas dan zonasi kawasan TNBT yang sebelumnya telah ditetapkan sesuai Keputusan Direktur Jenderal Perlindungan dan Konservasi Alam No. 17/Kpts/DJ-V/2001, tanggal 6 Pebruari 2001, seluas 127.698 hektar. Metode penentuan zonasi berdasarkan pada kriteria penetapan zonasi taman nasional yang terdapat dalam Peraturan Pemerintah Republik Indonesia No. 68 Tahun 1998 tentang Kawasan Suaka Alam dan Kawasan Pelestarian Alam. Selain itu digunakan juga indikator penetapan zonasi dan tingkat sensitivitas ekologi TNBT. Hasil penelitian menunjukkan bahwa kawasan TNBT perlu dirasionalisasi, yang meliputi Perubahan batas dan zonasi kawasan di Provinsi Riau dan Provinsi Jambi menjadi 180.279 hektar. Usulan Perubahan zonasi meliputi Perubahan batas dan luasan zona inti, zona rimba, zona pemanfaatan intensif, zona pemanfaatan tradisional, zona rehabilitasi, dan enclave