Abstract
Ultisols are commonly found in the tropics and are potentially suitable for plantation forestry. However, as well as being acidic (pH 5.0), they are commonly infertile and require fertiliser addition if commercial yields are to be achieved. A field experiment on a low productivity Ultisol at Lematang, South Sumatra, investigated the effect of seed source on the height, diameter and volume of Acacia mangium until age 36 months. Four seed sources were used:
Abstract
Mangrove forests play an important role in climate change mitigation and have attracted significant attention from scholars, governments, businesses, and non-governmental organizations. Therefore, this study aims to (1) describe land cover changes caused by rehabilitation activities and (2) investigate the dominant factors affecting mangrove improvement through rehabilitation activities. Land cover changes were monitored using Landsat 5 TM, Landsat 7 ETM+,
Abstract
This study aimed to investigate morphology and proportion of wood cell due to effect of lateral growth rate and radial position in white jabon [Neolamarckia cadamba (Roxb.) Bosser]. A total of nine trees of 10-year-old were used and wood samples were collected from the trees grown in progeny trial plot in Central Java Province, Indonesia. The parameters observed were cell morphology and proportion, including fiber length, fiber diameter, fiber lumen diameter,
Abstract
The increased demand for lightweight wood products requires genetic improvements in the growth, wood properties, and stress tolerance of fast-growing timber species. Falcataria falcata (Leguminosae) is one of the fastest-growing trees worldwide and an important multipurpose plantation species. This species is distributed across various geological locations in Southeastern Asia and Melanesia; therefore, populations from different regions may show phenotypic
Abstract
Global warming, a critical component of climate change, refers to an increase in average temperatures across the atmosphere, oceans, and land. Global warming is primarily caused by the accumulation of greenhouse gases. As an archipelagic nation, Indonesia plays a critical role in mitigating climate change, as outlined in its Nationally Determined Contribution. The Indonesian government announced the B40 policy, requiring a 40% palm oil blend with 60% diesel,
Abstract
Urbanisation alters ecological processes and reshapes biodiversity patterns, with significant implications for bird communities. This study examined avian community structure across an urban gradient in Daerah Istimewa Yogyakarta, Indonesia, by integrating field surveys with remotely sensed environmental variables. Bird species richness and composition were assessed at 300 observation points stratified by urbanisation class. Environmental predictors, including
Abstract
Acacia aulacocarpa A.Cunn. ex Benth is considered a potential source of fiber for the pulping and paper-making industries. This study aimed to evaluate the properties of Acacia aulacocarpa kraft pulp in relation to the presence of extractive. A separate assessment was conducted on the chemical composition and pulp properties of the sapwood and heartwood. Extractive removal was achieved with various organic solvents including n-hexane, ethanol, and hot water
Abstract
Bamboo can be engineeredfor laminate boards and other sustainableconstruction material. The adhesive type is expected to affect the laminated board’s quality. This study analyzedthe physical (density, moisture content, and delamination) and mechanical (bending and shear strength) properties of betung(Dendrocalamus asper) bamboo laminated boards prepared using various adhesives. The most favorableadhesive for enhancing betungbamboo laminated boardswas
Abstract
Kawui tree or Vernonia arborea is a lesser-known woody species, originated from Kalimantan Island, Indonesia. It is one of the potential materials for pulp and paper, which produces high bark residue. Furthermore, its rich background as folklore medicines suggested the medicinal properties of V. arborea. This study aims to explore the chemical extractives of V. arborea bark and their bioactivities. The bark samples were successfully extracted using n-hexane,
Abstract
Harto S, Musyafa, Sumardi, Hardiwinoto S, Dewi RA, Puradyatmika P, Sarwom R. 2025. Collembola diversity across three successional stages in a reclaimed tropical mining tailing site, Central Papua, Indonesia. Biodiversitas 26:2210-2220.Reclamation of tailing-impacted land by PT Freeport Indonesia aims to mitigate soil degradation and restore the underground microfaunaecosystem. Collembolas are utilized as bioindicators to evaluate reclamation
