We present new records of Ichthyophis elongatus Taylor, 1965 in West Sumatra. These records extend the known distribution of the species which was previously only known from the type locality in Padang, West Sumatra. We assess the morphology and habitats of this species and estimate its distribution. Predicted distribution based on maximum entropy modeling suggests a highly suitable habitat for the species throughout the Barisan Mountains at 500–1000 m above sea level. Our models suggest swamps, paddy fields, and secondary forests that are 100–150 m from rivers as the highest possible habitats for the species. Further surveys in two predicted areas based on the models discovered new populations of the species.

Light exposure from the sun is the most crucial variable for producing optimal pitcher size and colour variation in Nepenthes. This study aimed to observe the effect of forest canopy structure on morphological character of Nepenthes ampullaria’s pitcher parts (longitudinal, front, and peristome) both on size and shape using Geometric morphometric (GM) approach and its prey diversity. We classified the forest canopy structure into two categories: inside the canopy and open space area (gap). We used Unmanned Aerial Vehicle (UAV) images to build Canopy Height Model (CHM). Then, ForestGapR R package used to analyse and generated the forest gaps area. The prey specimens and photograph samples comprised from 9 individuals with three lower pitchers in open space area with high light exposure as well as shaded area inside the canopy. Total of 54 images were marked by point and curve to generated a landmark analysis using GeoMorph R package. Based on GM analysis, we observed that the forest canopy structure could affect Nepenthes pitcher shape but not in pitcher size. Our field result revealed Nepenthes ampullaria likely dominated by darker colour with a red spot in the shaded area and bright green colour in the open. However, based on our study the pitcher in shaded area inside the canopy have a larger number of prey species than the open area.

Above ground biomass (AGB) is all living organic matters above the soil including stem, seed and leaves. This study aimed to estimate the individual clove (Syzygium aromaticum) and it’s above ground biomass using Unmanned Aerial Vehicle in the Agroforestry area in Paninggahan, West Sumatra. This study used a photogrammetry method to calculate trees and estimated the AGB. We detected 257 numbers of trees based on aerial image analysis and observed 270 after we validated on ground check in the field. The result was slightly different between estimated AGB from UAV and observed AGB from our ground validation. The estimated AGB was 5.9 ton/ Ha where the surveyed AGB was 5.6 ton/Ha. The difference between estimated AGB and observed AGB was 0.3 ton/Ha.

The United Nations considers indigenous people local knowledge as a part of sustainable development. In fact, the local knowledge of Orang Rimba has transformed due to the pressure of industrialization. This article describe current ethnoforestry of Orang Rimba using ethnoscience and a multidisciplinary landscape assessment method. Data was collected by participatory observation, in-depth interviews, participatory social mapping, and plant collections, with informants being selected by purposive sampling. This research analysis uses an ethnoforestry approach. The ethnoforestry of Orang Rimba is local knowledge that regulates relationship between lowland forest taxonomy and the whole domain of life the Orang Rimba. Orang Rimba recognized various domains including Rimba Bungaron (primary forest) as related to both social organization and kinship (genah), customary (bebalai), and hunter-gather domain (merayau-nyulogh). Benuaron and Sialang (orchards and honey-producing trees) are classified as agroforestry domain and Bahumaon as rubber and oil palm plantations domain. The ethno-forestry of Orang Rimba has long been known as hunter-gather and swidden agliculture which is no longer the case as previous management of lowland forest has shifted the lives of Orang Rimba to rubber cultivation and oil palm plantation in Twelve Hill National Park.