Jurnal Penelitian Kehutanan Wallacea
Not a member yet
195 research outputs found
Sort by
Impact of land slope, tree density and basal area on fire intensity in pinus merkusii plantation forest
No full textForest fires are not solely determined by the quantity and quality of plant debris as fuel, but also influenced by some extrinsic factors. This study aims to examine the effect of some factors (slopes, tree density, and tree basal area) on the intensity of forest fires. The study was conducted in a 1 ha (100m x 100m) plot in the Pinus merkusii plantation 10 months after the fire. The plot was divided into 10 m x 10 m subplots, therefore there were 100 subplots. Each tree over 5 cm in diameter found in the plot was numbered consecutively, recorded its species name, measured its diameter, and determined whether it was alive or dead. The slope level in each subplot was measured. Multiple regression analysis was used to detect the influence of slope level, tree density, and basal area on the number of dead trees in each subplot. Results show that slopes, tree density, and basal area influenced proportionally the intensity of forest fires (R2 = 0,507; p<0.05). However, when the partial analysis was applied to detect the influence of each class factor, not all of the classes were found significant. These results reveal that there are several other factors not measured in this study that also influence fire intensity, which we suspect are tapping holes and tree diameter
Tourism competitiveness on the utilization zone of National Park in Indonesia
Full text linkIndonesia has various natural tourist attractions existed in the utilization zones of National Parks, scattered in regencies and cities within the archipelago. The utilization zone has a supportive environmental condition and very potential for the development of natural tourism, especially ecotourism. This utilization zone has endowment and added value in the form of attractions of Indonesia\u27s unique ecosystem diversity. The utilization zone of Natural Park requires supporting elements in the form of tourism competitiveness in regencies and cities to make them more accessible to tourists, mostly foreign tourists, and also make it easier for tourists to meet their needs while traveling. This study aimed to analyze the effectiveness of tourism competitiveness factors in 54 areas of the utilization zone of National Park.This study design used 20 factors of tourism competitiveness.The data were analyzed using the cluster method and multidimensional scale, as well as the Importance Performance Analysis (IPA)approach. This study found three regional clusters based on the characteristics of the potential for tourism competitiveness, namely the outside regional cluster of Java and Bali Islands, cluster of Java Island, and cluster of Bali region. Based on the effectiveness of potential for competitiveness, each cluster can be classified as a priority scale for building and developing of tourism competitiveness. Therefore, it is necessary to propose to the central government, local governments, National Park management, and other related parties to innovate policies innovations through the Destination Management Organization(DMO)governance mechanism in an effort to optimize tourism competitiveness factors in their regions, so that ecotourism in their regions is competitive and sustainabl
Diversity of natural dye plants in The Taplel Waterfall Area, Sisimeni Sanam Training Forest, Takari District, Kupang District
Full text linkThe Taplel waterfall area which is in the Sisimeni Sanam Education and Training Forest area is one of the conservation areas in East Nusa Tenggara which has quite high biodiversity, including plants that produce natural colors. However, information on the species diversity of dye plants in the Taplel waterfall area is still lacking. The objective of this study was to uncover the diversity of natural dye plants in the Taplel waterfall area, Sisimeni Sanam Training Forest, Takari District, Kupang Regency. Data collection was carried out by setting sample plots measuring 2 x 2 meters (seedlings), 5 x 5 meters (saplings), 10 x 10 meters (poles), and 20 x 20 meters (trees). Analysis of the importance of species using the Importance Value Index, and species diversity using the Species Diversity Index (Shannon-Wiener Index). Species of natural dye plants found in the Taplel Waterfall Area include Tectona grandis, Cassia siamea, Acacia auriculiformis, Tamarindus indica, Ficus racemosa, Leucaena leucocephala, Schleichera oleosa, Bauhinia purpurea, Cassia fistula, Garuga floribunda, and Annona squamosa L.. Plant species that has the highest important role in the Taplel Waterfall Area is Cassia fistula (sapling), Bauhinia purpurea (pole), and Tectona grandis (tree). Meanwhile, the diversity of natural dye plant species in the Taplel Waterfall Area at the level of seedlings, saplings, poles and trees is in the moderate category
Modeling suitable habitats of maleo (Macrocephalon maleo sal. müller 1846) in Gorontalo
Full text linkMaleo (Macrocephalon maleo) is one of the endangered bird species in Indonesia. This avifauna species is an endemic bird to Sulawesi Island. It is distributed from the south to the north of Sulawesi, including Gorontalo. Currently, information on suitable habitat models for M. maleo is very limited, while this information is required to support the conservation of M. maleo. This study aimed to model the potential habitat for M. maleo using species distribution modeling (SDM) with vegetation cover variables as predictors. The model was built based on the M. maleo occurrence points. The suitable habitat was then evaluated using area under the curve analysis and the receiver operating characteristic curve (AUCROC). Based on the model, the AUC is valued at 0.729, which is considered reasonable and indicates that the model can be used to depict the potential habitats for the species. In this study, most of the west and east parts of Gorontalo were considered not suitable for Maleo. While the coastal areas of Gorontalo were considered very suitable. This was confirmed for both the north and south coastal areas of Gorontalo. Then it is strongly recommended to conserve and protect most of those coasts to ensure the Maleo conservation
Comparison of pulp sludge compost effectivity of three different decomposers to the growth of geronggang (Cratoxylon arborescens) seedlings
Full text linkPulp residue from liquid waste processing is suitable for compost materials, except for its high CN ratioso it needs composting to reduce the CN ratio. Geronggang is a nativepeat swamp species suitable for peat rehabilitation. The study aims to test pulp sludge compost quality enriched with three different decomposersto the growth of geronggang (Cratoxylum arborescens)seedlings. The sludge composting was incubated for a monthusing threespecies of decomposers, i.e., Phanerochaete chrysosporium(C); Penicillium citrinumand Penicillium oxalicum (CO); P. chrysosporium, P. citrinumand P. oxalicum (CCO). The compost is weighed and placed around the seedling\u27s roots area with varies dosages equal to2, 4, 6, 8, 10, 12, 14,and 16 ton ha-1. The height and diameter of the seedlings were recorded for six months. Data was examined using ANOVA followed with DMRT at a 5% significance. The sludge compost in this study has CN ratio, Total N (%), P2O5(%) and K2O (%) about 40.22-44.5; 1.04-1.11; 1.05-1.13; 1.05-1.13, respectively. Statistically, the height increment of seedlings after the sludge compost application enriched with the CO was different from the CCO. However, the seedling\u27s height rise was not statistically different at the dosages variation treatment. The raise of seedlings diameter after CO treatment at a dosage equal to 6 and 12 tonha-1was significantly different to the CCO at a dosage equal to 12 ton ha-1. However, the rise of seedling\u27s diameter was not significantly different at decomposers\u27 variation treatment.The future study can be aimed to gain compost that meets the national standard
Bird diversity in Aketajawe Lolobata National Park
Full text linkResearch on richness and bird species diversity are important for conservation efforts in National Park. Currently, the Aketajawe Lolobata National Park (ALNP) is a habitat patch among industrial areas on Halmahera Island, so that it is important to carry out periodic bird inventories in the national park. Therefore, the need to study the current bird diversity and the status of bird species as a basis for future monitoring and implementation of appropriate conservation measures are important. Bird diversity research needs to be carried out because. Observation plots are placed at primary and secondary forest in Akejawi resort. The research was conducted on January to February 2022. Total observation point is 20 plots. The method was used by point count. The distance between the observation plot is 200 m and the radius of observation is 50 m. The observation were made in the morning (06.00-09.00 am). Repetition of observation on each habitat was carried out 10 times. Data were analyzed by using Shannon-Wiener Index Diversity. Based on findings, There were 345 individuals of 39 species from 19 families inhabited Akejawi Resort. Secondary forest had the highest diversity index when compared to primary forest. This study revealed that there were 9 birds originated from North Maluku and there were 15 species categorized as protected species. The latest data can provide opportunities for further research to reveal patterns of bird distribution and various protection measures due to the loss of forest areas around national parks
Spatial diversity patterns of understory shrub community in Srengseng urban forest, Jakarta
Full text linkUrban forests are one of the natural ecosystems in urban environments. One of the most important components of the urban forest ecosystem is the understory shrubs. Therefore, this study aims to estimate the diversity of understory shrubs in the Srengseng Urban Forest in Jakarta City. The biodiversity of understory shrubs is calculated using the Shannon-Wiener diversity index (H\u27) and mapped using the Geographic Information System (GIS). In this study, 24 plots measuring 2 m by 2 m each were placed to survey the understory shrubs. In total, there were 20 species of shrubs identified, which belong to 12 families with average values of H\u27 is 0.671. The results show that almost 62.78% of the total Srengseng Urban Forest area has a H\u27 diversity range of 1.001–1.500. In comparison, 8.62% of total urban forest area has an H\u27 diversity range of 0.501-1.000. The area of urban forest with the lowest diversity in the H\u27 diversity range of 0.000 to 0.500 reaches 28.58%. The eastern parts of the urban forest have the highest H\u27 in comparison to the other parts of the forest. This study contributes to the conservation and forestry management of forest at an urban scale by identifying parts of the urban forest that should be conserved in the Srengseng. To conclude, the eastern parts of Srengseng Urban Forest sizing 64,765 m2 should be prioritized for understory shrub conservation
The spatial patterns of deforestation in the Ko\u27mara forest area
No full textLand-use changes result from changes in the human population, their activities, and social and environmental activities, which occur in a complex and dynamic manner. The change of forested areas to non-forested areas, also known as deforestation, is a land-use change. Deforestation influences land cover by creating a specific distribution pattern (fragmentation). Almost the entire forest has been fragmented into smaller areas, but the pattern of each of these forest areas is uncertain. As a consequence, it would be more challenging to control potential deforestation. Using the spatial metrics of Clumpiness index, Contiguity index, and Patch density, deforestation in one of the forest areas, namely the Ko\u27mara forest area, was carried out. This research was analyzed using GIS and Fragstat software in raster data format. The analysis results show that the spatial pattern of deforestation in this area has a clumped distribution, with a high level of patch contiguity and a low to medium level of fragmentation. This pattern represents the form of deforestation in the Ko\u27mara forest area in 2005-2010 and 2010-2015 was classified as Low Deforestation with a deforestation rate of <1%, but was classified as Moderate Deforestation in 2015-2019 because the value obtained was 1.1%
Population and home range of the West Java Black Langur (Trachypithecus mauritius) in the forested area of Taman Safari Indonesia
Full text linkThe West Java black langur (Trachypithecus mauritius) is an Indonesian endemic primate found on the island of Java. Status and Conservation of the species is classified as Vulnerable based on the IUCN Red List and is listed in Appendix 2 of CITES. The West Javan langurs have been protected by Indonesian law since 1999. Under the decree of the Minister of Environment and Forestry Number. P.106/MENLHK/SETJEN/KUM.1/12/2018. The study aimed to examine population the population of the species and to determine its home range the forested area of Taman Safari Indonesia Bogor. This research was carried out from January to September 2021. Method The data collection used was a combination of methods concentrated Concentration Count using the observation method directly in the field. Analyze population distribution patterns using Nearest Neighbors, while the population distribution was analyzed using the area of the outermost point of encounter. The results showed that there were two groups of the West Java black langur existed in the area. The first group was around the location of the two houses, the panda palace, and the Jaksa waterfall 32 individuals and the second group was consisted of 15 individuals. Based on the survey, it was estimated that with an population density of T. mauritius in the area was 0.18 individuals/km² while the group density was 0.008 group/km². Group I was known to have a home range area of 17 ha while Group II had larger home range with 25 ha. The West Java black langur in this area were found to inhabit the upper parts of the forest at the altitude of 1000 to 1550 m above sea level. Population distribution patterns classified as clustered in all West Java black langur groups. The distribution of the West Java black langur population in TSI Bogor covers 58% of the total area
The species of Amanita mushroom at Haurbentes Research Forest, West Java
Full text linkEctomycorrhizal fungi play an important role in a forest ecosystem. The genus of Amanita is one of the common ectomycorrhizal fungi in the forest. The information on the diversity of Amanita in Indonesia is not properly organized. This is due to most of the prior publications were not equipped with basidiomata descriptions. The current research aimed to inventory the diversity of Amanita and provide a description of the basidiomata from the Haurbentes Research Forest, West Java. Macrofungi exploration was carried out by the opportunistic sampling method and identification of fungi based on morphological characters. A total of seven species of Amanita were successfully described and identified in this study : Amanita sp.1, Amanita sp.2 sect. Vaginatae, Amanita sp.3 sect. Vaginatae, Amanita cf. alboflavescens, Amanita cf. virginea, Amanita cf. fulva and Amanita cf. sychnopyramis.This report is the first information of Amanita in research site and adds to the record of mushroom diversity in Indonesia