Kwatrina RT, Santosa Y, Bismark M, Santoso N. 2018. The impacts of oil palm plantation establishment on the habitat type,species diversity, and feeding guild of mammals and herpetofauna. Biodiversitas 19: 1213-1219. Indonesia is the world’s largestproducer of palm oil. Contributing 2.14% to the country’s gross domestic product, palm oil plays an important role in the nationaleconomy from plantation sector. However, the expansion of oil palm plantations has brought negative impacts to forests and wildlife.Little is known to what extent these negative impacts on mammals and reptiles can be reduced through better management. To addressthis knowledge gap, the current study assessed species diversity as affected by the establishment of the oil palm plantation in CentralKalimantan, a tropical biodiversity hotspot in Asia. We conducted 25 line transect surveys and visual encounter surveys in oil palmareas, shrubs and secondary forests in these landscapes. The results indicated that the establishment of oil palm plantation negativelyimpacted species abundance and diversity, and changed the mammal and reptile species composition, by favoring ecologically generalistspecies. For forest specialist species, forested areas like HCV and HCS, play an important role in maintaining habitat heterogeneity inoil palm landscapes. Mammal species found in habitat conditions following oil palm plantations belong to some feeding groups,whereas all species of herpetofauna have terrestrial habitat types. These mammal and herpetofauna species can live and function in thefood chain in the oil palm plantation ecosystem.

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.

<p>Feed Plant Availability and Carrying Capacity of Rusa timorensis deBlainville, 1822 at Dramaga Research Forest Area. The research was conducted to know potenstial feed plant availability and carrying capacity at Dramaga Research Forest Area. Data was collected by measuring feed plant productivity of 45 plots with size 1 m x 1 m, and consumption level of four rusa deer (Rusa timorensis de Blainville, 1822). The result showed that the highest feed plant productivity was 17,362.09 kg/ha/year, and the lowest was 502.22 kg/ha/year. Light intensity correlation (y. lux) with dry weight production in 20 days (x. kg/ha), is y = 4.64 x -15.46 (r = 0.95). Feed plant availability was 121,607.01 kg/year, while consupmtion level based on fresh weight was 6,4 kg/individual/day or 2,336 kg/individual/year. Carrying capacity on observation area (11.9 ha) was 52 individual/year or 3.13 individual/ha/year.</p><p> </p><p><strong>Abstrak</strong></p><p>Penelitian bertujuan untuk mengetahui ketersediaan hijauan pakan potensial serta daya dukung kawasan Hutan Penelitian Dramaga sebagai sumber pakan rusa timor (Rusa timorensis de Blainville, 1822) di penangkaran. Pengukuran produktivitas hijauan pakan dilakukan dalam 45 plot contoh berukuran 1 m x 1 m, serta pengamatan tingkat konsumsi pakan terhadap empat individu rusa timor (R. timorensis) yang mewakili jantan, betina, kelas umur anak dan dewasa. Hasil penelitian menunjukkan bahwa produktivitas bobot basah hijauan pakan rusa timor (R. timorensis) di Hutan Penelitian Dramaga tertinggi adalah 17.362,09 kg/ha/tahun dan yang terendah sebesar 502,22 kg/ ha/tahun. Korelasi produktivitas hijauan dengan intensitas cahaya (y, lux) dengan produktivitas bobot kering dalam 20 hari (x, kg/ha) adalah y = 4,64 x -15,46 (r = 0,95). Ketersediaan pakan rata-rata pada Hutan Penelitian Dramaga sebesar 121.607,01 kg/tahun sedangkan tingkat konsumsi pakan rusa timor (R. timorensis) berdasarkan bobot basah pakan adalah 6,4 kg/individu/hari atau 2.336 kg/individu/tahun. Pada areal yang diamati seluas 11,9 ha maka daya dukung habitat adalah 52 individu/tahun atau rata-rata sebesar 3,13 individu/ha/tahun.</p>

The high rate of deforestation and fragmentation of elephant habitat on Sumatra Island has triggered human-elephant conflict (HEC) in Sumatra Island, Indonesia. This conflict brings negative impacts on humans and elephants. Despite numerous efforts having been made to solve this problem, the HEC continues to occur in the remaining elephant enclave every year. The harmonious coexistence between humans and elephants could be improved through HEC mitigation programs. The aim of this paper was to review information on HEC in Sumatra Island, investigate the causes and implications of HEC, review existing HEC mitigation methods, and formulate strategies to improve the harmonious coexistence between humans and elephants. The best strategies to create successful human and elephant coexistence are strengthening the institutions and policies, restoring the habitat, developing wildlife corridors, establishing Essential Ecosystem Areas (EEA), community empowerment through ecotourism, providing legal access to forests through Social Forestry (SF), and providing compensation schemes for conflict victims.

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