A new species of stone oak, Lithocarpus tapanuliensis Harapan, W.H.Tan, Nurainas & Strijk from South Tapanuli, North Sumatra, Indonesia is described. We provide colour photographs, a distribution map ...and a new IUCN conservation status assessment for inclusion on the global Red List. The unique cupule morphology, particularly the shape, placement and distinctness of the cupule protuberances, are distinctive from other Lithocarpus species in the region. Ecological interactions (e.g. consumption and nesting) with Tapanuli orangutans were recorded in the field.
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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.
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.
A new species of stone oak, Lithocarpustapanuliensis Harapan, W.H.Tan, Nurainas & Strijk from South Tapanuli, North Sumatra, Indonesia is described. We provide colour photographs, a distribution map ...and a new IUCN conservation status assessment for inclusion on the global Red List. The unique cupule morphology, particularly the shape, placement and distinctness of the cupule protuberances, are distinctive from other Lithocarpus species in the region. Ecological interactions (e.g. consumption and nesting) with Tapanuli orangutans were recorded in the field.
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IZUM, KILJ, NUK, PILJ, PNG, SAZU, UL, UM, UPUK
Harapan TS, Nurainas, Syamsuardi, Taufiq A. 2022. Identifying the potential geographic distribution for Castanopsis argentea and Castanopsis tungurrut (Family: Fagaceae) in the Sumatra Conservation ...Area Network, Indonesia. Biodiversitas 23: 1726-1733. Recently, Castanopsis argentea (Blume) A.DC. and Castanopsis tungurrut (Blume) A.DC. have been listed as endangered species by the International Union for the Conservation of Nature (IUCN). For conservation planning, it is important to know the full distribution of species. This study aimed to predict the potential distribution of C. argentea and C. tungurrut using MaxEnt, and understand key factors responsible for the distribution of these species. A total of 53 occurrences and six environmental variables were used to model their distribution. The AUC values of C. argentea and C. tungurrut were 0.86 and 0.91, respectively, and the models suggest the distribution of both species is mainly influenced by elevation, and temperature seasonality for C. tungurrut. The predicted distributions of the species are in the mountains of the western part of Sumatra, and their range includes 12 conservation areas that have highly suitable habitats for both species. After generating the MaxEnt prediction map, we conducted field validation to validate the model predictions. Field surveys in two predicted areas showed that the predicted distribution maps accurately estimated the distribution of C. argentea and C. tungurrut at those localities.
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.
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.
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