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Journal : Forest and Nature

Camera Trap-Based Assessment of Wild Boar (Sus scrofa) Abundance in a Tropical Protected Forest Landscape of Sumatra Lu’luah, Sau San; Iswandaru, Dian; Hidayat, Aris; Dewi, Bainah Sari
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

Abstract

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 Hutasoit, Wana Putri Anastasya; Park, Bugae; Dewi, Bainah Sari; Hidayat, Wahyu
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

Abstract

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 . Wamiliana 2016_Monica destia Ade Irma Suryani Afif Bintoro AGUS SETIAWAN Agus Setiawan Akhmad Kamaluddin Al Ikhsan, Ahmad Amallia, Citra Andari Mahardika Putri Andrian Dwi Atmanto Anita Febrina, Anita Anwar, Khoironi Arief Darmawan Arief Darmawan Aris Hidayat Arsan, Zulfi Asep Sukohar Athaya Talitha Siti Awaliah Atiqoh, Nur Qurrotun Nabilah Berlian, Ajeng Candra Murty Ayuningtyas Ceng Asmarahman Christine Wulandari Cristi, Engelia Dea Andhari Resphaty, Dea Dewi Sri Wahyuni Dian Iswandaru Dila, Riska Rahma Duryat Duryat, Duryat Dyan Shandy Utama Edo Firnanda, Edo Esanur Octarin Evi Damayanti, Evi Fadhila, Safira Cahya Fatmawati, Nimas Ayu Firdaus, Rendi Fitriana, Yulia Rahm Fitriana, Yulia Rahma Frans Hamonangan Nainggolan Gayatri, Komang Intan Gdemakarti, Yoshua Gultom, Eklesia Armauly Gunardi Djoko Winarno Gusmalinda, Rita Habibi, Muhammad Hadi Harahap, Eka Septiani Harianto, Sugeng P. Harianto, Sugeng Prayitna Harianto, Sugeng Prayitno Hartawan, Novguli Aldy Hidayat, Apri Huda, Robithotul Hutasoit, Wana Putri Anastasya I GEDE SWIBAWA, I GEDE Imam Adhi Wijaya Indra Gumay Febryano Ismail Isnawati, Emi Isnawati Iswandaru, Dian Iwai, Noriko Kamaluddin, Akhmad Kamaluddin, Akhmad Kaskoyo, Hari Kornelius Siahaan Kurniasari, Nanda Kurniawaty, Evi Kuswandono Lasmaria, Febby Lasmaria Lusmeilia Afriani Lu’luah, Sau San Manaf, Latifah Abd. Mantika Lestari Masruri, Niskan Walid Matondang, Nora Fery Melya Riniarti Moch Herman Surya Monica destia Nabila Alfalasifa Naradia Ayu Kartika Nedi Nimas Ayu Fatmawati Niskan Walid Masruri Novandra, Dion Novriyanti Novriyanti Nuning Nurcahyani Nur Arif Rohman Nurjanah, Siti Neneng Octavia, Anggi Panjerrino, Yoshua Gdemakarti Pardede, Lusiana Br. Park, Bugae Prasetyo, Dendy Pratama, Ajjun Sayhel Nanda Puja Anggriana Purwatmiyanti, Sri Putra, Albar Bagas Putra, Aldi Alhamda Putra, Muhammad Faiq Khairy Rahmat Safe'i Ranti, Shafa Fauzia Redi Mutama Rhezandhy Gunawan Ricat Rawanda Riyanto Rodiani, Rodiani Rohany Yanti Sihite Rohman, Nur Arif Rohman, Widodo Arif Rommy Qurniati Rudi Hilmanto Rudi Hilmanto Rusita rusita rusita Salsabila, Sahda Samsul Bakri Santoso, Trio Saturnino Xavier Sectionov, Sectionov Sigit Prayogi Sihaloho, Intan Ambarsari Sitompul, Ferdynan Sitompul Slamet Budi Yuwono Subagio, Aris SUGENG HARIANTO Sugeng p Harianto Sugeng P. Harianto Sugeng P. Hariyanto Sugeng Prayitno Harianto Sugiharti, Tri Surnayanti Surnayanti Susi Indriyani Susni Herwanti Takahashi, Tasuku Tokita, Norio Toriqoh, Jamilatut Trislina Handayani Tsani, Machya Kartika Turnip, Henni Turnip Violita, Cindy Yoeland Wahyu Hidayat Wahyu Hidayat Wibowo, Novita Wijayanti, Rizky Kusuma Winarno, Gunardi Djoko Winarti, Indah Wulandari, Christin Yulia Rahma Fitriana Yuliansjah, Fachrezy Zania, Azalia