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All Journal Jurnal Sylva Lestari Forest and Nature

Bainah Sari Dewi

Department of Forestry, Faculty of Agriculture, University of Lampung

Author-ID : 5271989

Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Energy Environmental Science Materials Science & Nanotechnology

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Pengaruh Naungan Pohon terhadap Keanekaragaman Dung Beetle di Blok Pemanfaatan Tahura Wan Abdul Rachman (Effects of Tree Shading on the Dung Beetle Biodiversity in the Utilization Block of Wan Abdul Rachman Great Forest Park) Novia Dewara; Bainah Sari Dewi; Sugeng Prayitno Harianto
Jurnal Sylva Lestari Vol. 8 No. 1 (2020): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Bioindicator of the level of destruction of tropical forests and habitats can be seen from the presence of dung beetle. Dung beetle plays an important role in regulating the function of ecosystems. The purpose of this study was to determine the effect of tree shading on the dung beetle diversity in the the Utilization Block of Wan Abdul Rachman Great Forest Park (Tahura WAR). The method used was the trap method. Traps were planted parallel to the soil, then the collected data was analyzed with diversity index (H`), evenness index (E), and abundance index (E). The results found three species of dung beetles, namely Cattarsius mollosus, Onthopagus sp, and Aphodius marginellus. Diversity index of dung beetle in the area with tree shading (H '= 1.09) was greater than without tree shading (H' = 0 ,9). The evennes index (E) and abundance index (R) of dung beetle in the area with tree shading were E = 0.99 and R = 0.66, while without tree shading were E = 0.82 and R = 0.96. Comparison of the diversity of dung beetle in the the area with tree shading and without shading was 21: 8. This means that the dung beetle could maintain a stable population under tree shading. Dung beetle prefers the area with tree shading due to its suitability for the flight activity, suitable habitat condition, and the availability of food sources. The management of Tahura WAR is expected to increase land cover so that the existing ecosystems could remain sustainable. Keywords: biodiversity, dung beetle, Tahura WAR, tree shading

Keanekaragaman Jenis Amfibi (Ordo Anura) Pada Beberapa Tipe Habitat Di Youth Camp Desa Hurun Kecamatan Padang Cermin Kabupaten Pesawaran Yudi Safril Ariza; Bainah Sari Dewi; Arief Darmawan
Jurnal Sylva Lestari Vol. 2 No. 1 (2014): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Amphibian is one of important ecosystem component, both ecologicaly and economically. Research about amphibian in Indonesia is still very limited. In Sumatra, one of Indonesia's largest islands, there hasn't been much attention on research about amphibians. This study aimed to compari the diversity of nocturnal amphibians (Ordo Anura) about at Youth Camp on habitat types. This study was implemented at three different types of habitat, (1) forest, (2) plantations, and (3) rivers. The data was collected by visual encounter survey using line transect method. Identification was book using identification guidebook. The data was analyzed descriptively as well as statistically to calculate species richness and shannonwiener biodiversity index and evenness index. There were 105 individuals comprising 15 species of amphibians and 5 families: Bufonidae 3 species, Megophrydae 1 species, Microhylidae 2 species, Ranidae 7 species, and Rhacophoridae 2 species. Forest habitat found 8 species, plantation habitat 5 species, and river habitat 7 species. The biodiversity index of amphibian at three habitat being categori and evenness index are forest habitat J=0,695, plantation habitat J=0,578 and river habitat J=0,477. Keywords: amphibians, diversity, Hanura, Youth Camp

Peran Siamang (Hylobates Syndactylus) Sebagai Pemencar Biji Di Resort Way Kanan Taman Nasional Way Kambas Lampung Andrian Dwi Atmanto; Bainah Sari Dewi; Nuning Nurcahyani
Jurnal Sylva Lestari Vol. 2 No. 1 (2014): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Way Kambas National Parklocated inLampung Provinceis habitat for gibbon (H. syndactylus), frugivorous primate which plays a role as seeds dispersal process in tropical rainforests with its activities. Purpose of the research is to determine the gibbon's role as seeds dispersal. It was conducted in August 2012 in the Way Kanan Resort of Way Kambas National Park. The method used is exploration and feces analysis. Based on the research, there are 37 samples of gibbon's feces and 7 spesies of seed plant dispersed by gibbon include Polygonum chinense, Grewia paniculata, Ficus sp, Bouea macrophylla, Dacryodes rostrata, Aporosa aurita, and Aplaia palembanica. Seeds are distributed by gibbon using endozoochory process without destroying seeds and can be dispersed far from the parent trees.Distance of the seed dispersed by gibbons ranges 0-385 meters. Defecation activity of gibbon is done after waking, feeding activity, and when moved to other tree with frequency of defecation between 3-6 times a day. The composition ofgibbon's feces is seeds and leaves. The highest attendance of seeds in feces is Polygonum chinense seeds (42,12%) and the lowest is Aporosa aurita seeds (1,18%). The mean seeds in feces is 7,38 from 273 seeds. Keywords : gibbon, seed dispersal, Way Kambas National Park

Perilaku Menggaram Gajah Sumatera (Elephas Maximus Sumatranus) Dan Kandungan Garam Mineral Pada Saltlicks Di Resort Pemerihan Taman Nasional Bukit Barisan Selatan Dea Andhari Resphaty; Sugeng Prayitno Harianto; Bainah Sari Dewi
Jurnal Sylva Lestari Vol. 3 No. 2 (2015): May
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Sumatran elephant (Elephas maximus sumatranus) requires mineral salts to the body's metabolic processes which can be obtained from the vegetation feed. Mineral deficiencies in plants causes elephants seek other alternative sources such as lick and eat soil that contains salt. This research was done due to lack information about salting behavior and mineral salt content in the saltlicks. The aims of these research were to analyze the salting behavior of Sumatran elephants and to find out mineral salt content of the soil in the saltlicks. The research was done on January 2015 in TNBBS Pemerihan Resort. The research methods of salting behavior used descriptive analysis, mineral content analysis used Microwafe Plasma' Atomic Emission Spectrometer (MP-AES) supported by key person interview and literature studies. The results of this study indicate that salting behavior of Yongki (0.08%) of total daily behavior, the source of salt obtained from soil and mud on riparian, cliffs, primary forest, secondary forest and meadow. Salting was done by taking directly using trunk and put into the mouth. The results of the analyzed of mineral salt content in the soil there are Ca (0.190%), Mg (0.013%), K (0.158%). In the mud Ca (0,323%), Mg (0.405%) and K (0.233%). Elephant more prefer to the mud because mineral content in the mud is higher than soil. Keywords: Sumatran elephants, salting behavior, saltlicks, mineral salt content of the soil, Bukit Barisan Selatan National Park

Camera Trap-Based Assessment of Wild Boar (Sus scrofa) Abundance in a Tropical Protected Forest Landscape of Sumatra Sau San Lu’luah; Dian Iswandaru; Aris Hidayat; Bainah Sari Dewi
Forest and Nature Vol. 1 No. 4 (2025): October
Publisher : Green Insight Solutions

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63357/fornature.v1i4.26

Wild boar (Sus scrofa) plays a crucial role in tropical forest ecosystems but also poses ecological and socio-economic challenges, including crop damage and susceptibility to African swine fever (ASF). This study assessed temporal changes in the relative abundance of wild boars in the core block of the Batutegi Protected Forest Management Unit (KPHL Batutegi), Lampung Province, Indonesia, using camera trap data collected in 2018, 2022, and 2024. A total of 18 camera traps were installed at fixed monitoring points, and all photographs of wild boars were processed to determine independent events (IE) following a ≥ 30-minute interval rule; these IE data were then used to calculate the Relative Abundance Index (RAI). The results revealed substantial temporal fluctuations: RAI was 3.18 in 2018, declined drastically to 0.55 in 2022, likely due to ASF outbreaks, and increased significantly to 7.29 in 2024, indicating potential recovery or adaptation to post-outbreak conditions. Seasonal patterns showed higher activity during drier months, suggesting that rainfall influences foraging behavior and the detectability of animals. Beyond wild boars, camera traps also recorded diverse non-target wildlife, including several threatened species listed in the International Union for Conservation of Nature (IUCN) Red List, emphasizing the ecological significance of the Batutegi Protected Forest. These findings highlight the importance of long-term wildlife monitoring using camera traps to detect population fluctuations, evaluate disease impacts, and inform adaptive management strategies. Continuous observation is essential for balancing wildlife conservation and mitigating human–wildlife conflict in tropical protected forests.

Thermochemical Conversion of Rubber Wood Pellets via Downdraft Gasification: Syngas Composition, Heating Value Trends, and By-Product Characterization Wana Putri Anastasya Hutasoit; Bugae Park; Bainah Sari Dewi; Wahyu Hidayat
Forest and Nature Vol. 1 No. 4 (2025): October
Publisher : Green Insight Solutions

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63357/fornature.v1i4.30

The increasing global energy demand, coupled with declining fossil fuel reserves, is driving the development of biomass-based renewable energy. Rubber wood (Hevea brasiliensis) is a potential biomass source due to its abundant availability from the rejuvenation of community gardens. This study aims to analyze the energy characteristics of rubber wood pellets as biomass fuel, analyze the composition of synthesis gas (syngas) and lower heating value (LHV), and the characteristics of ash (residue from the gasification process) using a downdraft gasifier. The study was conducted at the Forest Products Technology Laboratory, Faculty of Agriculture, University of Lampung, using 20 kg of rubber wood pellets as the raw material. The gasification procedure progresses through four fundamental stages, including drying, pyrolysis, combustion, and reduction, which are conducted within a downdraft gasifier system. Syngas analysis was performed using a portable infrared syngas analyzer (Gasboard G3100-P) to determine the concentrations of CO, CO2, CH4, H2, and O2. The results showed that the average composition of the syngas produced was 17.98% CO, 8.58% CO2, 1.57% CH4, 10.04% H2, and 1.78% O2. The average calorific value (LHV) was 725.81 kcal/m3 with a range of 690–775 kcal/m3. The proximate analysis results showed a moisture content of 10.93%, volatile matter 74.37%, ash content 8.60%, and fixed carbon of 6.20% in the pellet biomass, while the ash (by-product) had a moisture content of 9.58%, volatile matter 14.42%, ash content 71.61%, and fixed carbon 4.37%. The composition of the syngas produced was within the ideal range for a downdraft, indicating that rubber wood pellets have high potential as a biomass-based renewable energy fuel.

Co-Authors Andrian Dwi Atmanto Arief Darmawan Aris Hidayat Bugae Park Dea Andhari Resphaty Dian Iswandaru Novia Dewara Nuning Nurcahyani Sau San Lu’luah Sugeng Prayitno Harianto Wahyu Hidayat Wana Putri Anastasya Hutasoit Yudi Safril Ariza

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