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All Journal Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Forest and Society Jurnal Sylva Lestari Forest and Nature
Dian Iswandaru
Department of Forestry, Faculty of Agriculture, University of Lampung
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Energy Engineering Environmental Science Materials Science & Nanotechnology Social Sciences

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Between Hopes and Threats: New Migratory Birds Records on the Sawala Mandapa Education and Training Forest, Indonesia Dian Iswandaru; Gugie Nugraha; Aris Djati Dwi Iswanto; Yulia Rahma Fitriana; Kornelia Webliana
Forest and Society Vol. 6 No. 1 (2022): APRIL
Publisher : Forestry Faculty, Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/fs.v6i1.19160

Abstract

Java Island is one of the tropical areas for bird migration, especially the Asian-Australian flyway of migratory birds. The SMETF is one of the protected forest areas that migratory birds can visit in Java. This research aims to identify migratory birds in SMETF. Transect and point count methods are used to observe migratory bird movements and their activities. In the research area, four migratory birds were identified: Ficedula zanthopygia, Agropsar sturninus, Pernis ptilorhynchus o., and Accipiter soloensis. The first and second species showed many activities for four months from October 2020 to January 2021, and this is an indication that both are using the research site as a wintering habitat. The activities of the Pernis ptilorhynchus o., Accipiter soloensis were dominated by flying “flock” over the forest. Only the Pernis ptilorhynchus was observed carrying out hunting activities, indicating that this bird uses the area as a stopover area. This research also identified illegal hunting techniques, such as ngaleugeut and mikat, as severe threats to migratory birds in the SMETF.
Effects of Torrefaction Temperature on the Characteristics of Betung (Dendrocalamus asper) Bamboo Pellets Bagus Saputra; Karina Gracia Agatha Tambunan; Intan Fajar Suri; Indra Gumay Febryano; Dian Iswandaru; Wahyu Hidayat
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 2 (2022): June
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v11i2.339-353

Abstract

The objective of this study was to evaluate the effects of torrefaction temperature on the physical and mechanical properties of betung bamboo (Dendrocalamus asper) pellets. Torrefaction was conducted in an electric furnace at 200°C, 240°C, and 280°C for 50 minutes. The physical properties evaluated included color change, density, moisture content, water resistance, and water adsorption. The mechanical properties were also investigated by compressive strength test. The result showed that torrefaction affected the color properties of betung bamboo pellets with ∆E values of more than 12 or totally changed. The density and moisture content of torrefaction bamboo betung pellets decreased with increasing torrefaction temperature. The results also showed that the hydrophobic properties of the bamboo betung pellets improved with the increased of torrefaction temperature. The highest compressive strength value was obtained by bamboo betung pellets torrefied at 200°C and the values decreased with the increase of temperature. In conclusion, there were differences in the physical and mechanical properties of bamboo betung pellets that were torrefied at different temperatures. Torrefaction with an electric furnace effectively improved the quality of betung bamboo pellets. Keywords:   Bamboo betung, pellets, temperature, torrefaction
Birding and Avitourism: Potential Analysis of Birds in the Buffer Villages Around Conservation Area Dian Iswandaru; Hariyono; Fathur Rohman
Jurnal Sylva Lestari Vol. 11 No. 2 (2023): May
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v11i2.681

Abstract

The development of avitourism in villages around the conservation area still needs optimal support to increase welfare and reduce illegal practices like bird hunting. Birds are wild animals that play an essential role in the ecosystem. One of the efforts that have been developed in the buffer village to improve the welfare community and the conservation of birds is avitourism. This study aimed to analyze birds that have the potential as objects and attractions in avitourism. The bird species recorded were 82 species from 39 families. The results of key informants’ perception analysis revealed that 55 bird species (67.07%) have the potential as objects and attractions of avitourism, showing the nocturnal birds, top 50 birds of Way Kambas National Park, and parrot species as the top classification (> 75%). The colorful, raptor, and protected criteria are second with the favorite classification (51-75%). Endemic and migrant criteria are in the third position with the impressive classification (25-50%), and the songbird criteria are the lowest with the interesting classification (< 25%). The existence of birds that have the potential as objects and attraction of avitourism in the villages around Way Kambas National Park indicates that areas can be used in locations for avitourism, including bird photography, to improve welfare. Keywords: Avitourism, birds, buffer villages, Way Kambas National Park
Diversity and Abundance of Waterbirds in Several Types of Wetlands (Case Study in Sumbernadi Village, South Lampung Regency) Octavia Widya Maharany; Dian Iswandaru; Sugeng Prayitno Harianto; Gunardi Djoko Winarno
Forest and Nature Vol. 1 No. 2 (2025): April
Publisher : Green Insight Solutions

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63357/fornature.v1i2.10

Abstract

Waterbirds are a group of birds that naturally spend most of their lives in aquatic areas. Sumbernadi Village is located in a coastal area that is part of the wetland ecosystem and includes mangrove, mudflat, fishpond, and ricefield habitats. The aim of this study is to obtain data on the species diversity, species richness, species evenness, species abundance, and species dominance of waterbirds in various wetland types in Sumbernadi Village, South Lampung Regency. The method used for bird data collection was the point count method. In this study, six observation points were established in each wetland habitat (mangrove, mudflat, fishpond, and ricefield), with a distance of 200 meters between each point, and an observation interval of 30 minutes. The results of the study identified 27 species of waterbirds, consisting of a total of 525 individuals from 9 families. These findings indicate that the mud and pond habitats have higher species diversity and richness compared to other habitats, with species diversity (H') values reaching 2.66 and 2.78, respectively. The species richness (R) values in these two habitats are also higher, indicating that environmental conditions in the mud and pond habitats are more supportive for various species of waterbirds to thrive. In contrast, the mangrove habitat shows lower diversity with an H' value of 2.06, indicating that the bird species in this habitat are less varied. On the other hand, the rice field habitat shows good evenness in species distribution with an E value reaching 0.94 and the absence of dominance of certain species (C = 0.11). This indicates a balance in the bird population in the rice field habitat, which can be an indicator of the health of the ecosystem in the area. The results of this study indicate the need for special attention in habitat management and conservation, especially to increase the diversity of waterbirds in less diverse habitats, such as mangroves. These efforts are essential to support healthier and more sustainable ecosystems and ensure that various waterbird species can adapt and survive in changing environments. The ecological index of waterbirds in several wetlands shows that mangroves have relatively low species diversity, while mudflats, ponds and rice fields have higher species diversity.
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

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. 
Co-Authors Aris Djati Dwi Iswanto Aris Hidayat Bagus Saputra Bainah Sari Dewi Fathur Rohman Gugie Nugraha Gunardi Djoko Winarno Hariyono Indra Gumay Febryano Intan Fajar Suri Karina Gracia Agatha Tambunan Kornelia Webliana Octavia Widya Maharany Sau San Lu’luah Sugeng Prayitno Harianto Wahyu Hidayat Yulia Rahma Fitriana