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All Journal Indonesian Journal of Forestry Research Jurnal Biodjati Buletin Eboni
Ishak Yassir
Balai Penelitian dan Pengembangan Teknologi Konservasi Sumber Daya Alam
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences

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Vegetation Structure, Composition, and Soil Properties of Dry Land on Islands in Balikpapan Bay, East Kalimantan Tri Sayektiningsih; Bina Swasta Sitepu; Ishak Yassir; Ulfah Karmila Sari; Mukhlisi Mukhlisi; Amir Ma'ruf
Jurnal Biodjati Vol 5, No 2 (2020): November
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/biodjati.v5i2.6434

Abstract

   Some small islands in Balikpapan Bay consist of dry land which may have different vegetation structure and composition. Our study was the first to uncover vegetation conditions and soil proper-ties of dry land on small islands in Balikpapan Bay, which has never been conducted before. The research was carried out on Kalawasan and Karantina islands. Information on vegetation was obtained by applying a line transect method. Data on soil properties were col-lected by setting up 3 sampling plots in each transect of vegetation. Parameters used for analysing vegetation including relative densi-ty, relative frequency, relative dominance, Shannon-Wiener diversi-ty index, evenness index, and similarity index. Meanwhile, data on soils were analysed descriptively. Trees on Kalawasan island were comprised of 241 individuals belonging to 21 species. There were 61 individuals (22 species) of trees on Karantina island. The diver-sity index of trees on Kalawasan and Karantina island was 2.55 and 2.72, respectively. The tree evenness index was 0.84 on Kalawasan island and 0.88 on Karantina island. The index of similarity for trees between the two islands was 0.21. Furthermore, the soil character-istics on Kalawasan and Karantina islands showed similarities. In general, soil in Kalawasan and Karantina islands could be catego-rised as marginal soil which was common in East Kalimantan. Con-sidering the rapid loss of tropical forests in the mainland of Kali-mantan indicates that the small islands of Balikpapan Bay play an important role in future biodiversity conservation in East Kalimantan. 
THE GROWTH OF LOCAL TREE SPECIES ON POST-COAL MINING AREAS IN EAST KALIMANTAN Burhanuddin Adman; Ardiyanto Wahyu Nugroho; Ishak Yassir
Indonesian Journal of Forestry Research Vol 7, No 2 (2020): Indonesian Journal of Forestry Research
Publisher : Secretariat of Agency for Standardization of Environment and Forestry Instruments

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2020.7.2.83-97

Abstract

Post-coal mining areas need rehabilitation to restore its functionality. Not all plants could grow well on bare ex-coal mining area because of the excessive light intensity and extreme temperature fluctuations.  This study is aimed to determine suitable local tree species for rehabilitating mined areas. Planting was carried out in November 2012, and observations were made in November 2015. The study site was in the district of Samboja, Kutai Kartanegara, East Kalimantan Province, Indonesia. Research results revealed that seven tree species survived well in the ex-coal mining land, i.e., Vitex pinnata L., Syzygium scortechinii (Merr.) Merr. & Perry, Syzygium polyanthum (Wight) Walp., Shorea balangeran (Korth.) Burck, Macaranga motleyana (Mull.Arg.) Mull.Arg., Cleistanthus myrianthus (Hassk.) Kurz and Syzygium lineatum (DC.) Merr. & L.M. Perry. From the seven species V. pinnata, Sy. scortechinii and Sy. polyanthum performed best in both survival and growth rates. This study suggests those three species are excellent local tree species for ex-coal mining rehabilitation, not only because of their high survival rate (≥80%) and fast-growing but also they produce favourable fruits and flowers for wildlife.
Students and Orang Utan Conservation: High School Students’ Perceptions of Orang Utan Sanctuary Establishment in Balikpapan Bay, East Kalimantan, Indonesia Tri Sayektiningsih; Ulfah Karmila Sari; Ishak Yassir; Amir Ma'ruf
Buletin Eboni Vol 2, No 1 (2020): Buletin Eboni
Publisher : Balai Penelitian dan Pengembangan Lingkungan Hidup dan Kehutanan Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/buleboni.5570

Abstract

The role of young generations including students was crucial in orang utan conservation. They are not only agent of change, but they are also capable of distinguishing attitudes which are able to influence policy in the future. The purpose of this study was to examine high school students’ perceptions of establishment of the orang utan sanctuary in Balikpapan Bay. We used quantitative and qualitative approaches for data collection with students on the grade of XII as respondent. Data was analyzed descriptively and quantitatively. The findings showed that students had good perceptions towards unreleased orang utan conservation. They agreed that the orang utan sanctuary should be established. Students also had positive perceptions relating to the positive impacts of orang utan sanctuary on the village and environment. However, students had neutral perceptions towards negative impacts of orang utan sanctuary. There were no differences between male and female students’ perceptions towards the establishment of orang utan sanctuary. Conversely, male and female students’ perceptions in regards with the impacts of orang utan sanctuary on the village and environment were differed.
Co-Authors Amir Ma'ruf Ardiyanto Wahyu Nugroho Bina Swasta Sitepu Burhanuddin Adman Mukhlisi Mukhlisi Tri Sayektiningsih Ulfah Karmila Sari