bluuebunny/crossref_metadata_2025_split huggingface dataset:
Design of hybrid power plants (solar module-generator set)
Authors: Sitorus B L , Samosir R , Sebayang M D 
Published: November 2021

Abstract
Hybrid power plant which utilizes the solar module is the primary source and the generator set is the secondary source for backing up the solar module in battery charging in the village of western Meranti. The total energy needed in this village is 14.21 kWh per day and the use of this energy is from 18:00 to 6:00 o’clock. After the calculation is obtained that the capacity of the battery needed to store energy is 731 Ah with a total of 20 batteries capacity of 1 battery 150 Ah 12 V. In this area the average insolation is 4.87 kWh / m2 / day, irradiation hours in this village obtained 4.87 hours a day, then the solar module needed 40 modules with 2 circuits, each series is made 2 series and 10 parallel, the required Solar Charge Controller capacity is a minimum of 68.37 A for 2 units and for the inverter because the maximum load power is 2,880 W, the inverter with a capacity of 4,000 W is chosen and for the Genset to be used is a generator with an output of 4,500 W and a battery charger capacity minimum 54.825 A. The use of generator set is only for charging energy to the battery if the energy inside the battery has reached the planned DOD limit and the cost of electricity produced is Rp4.524,00/kWh.
Dynamics of the global trade Asiatic Softshell Turtle (Amyda cartilaginea Boddaert 1770): Shifting trends in commerce and consequences for sustainability
Authors: Sihombing V S , Kwatrina R T , Santosa Y 
Published: November 2021

Abstract
Biodiverse countries such as Indonesia provide the exotic Asiatic Softshell Turtle (Amyda cartilaginea Boddaert 1770) for the wildlife trade. Deciding which trade model is detrimental to species survival in the wild can be a major challenge for Management Authorities (MA) in implementing CITES. The consequences for conservation, long-term use, and livelihoods are uncertain. The study used the CITES (Convention on International Trade in Endangered Species of Wild Fauna and Flora) trade database. The collection of raw data is based on trade reports for the species of freshwater turtles (testudinidae) for the period 2011 to 2021, export countries from Indonesia, export destinations for all countries and sources of harvested turtles from the wild. This research aims to study the freshwater turtle trading trends over the decade, compare total quotas to actual harvest, and recognize how the precautionary principle is applied in harvesting A. cartilaginea. Harvesting and trading are following the quota regulated under the Indonesian government. However, conservation efforts were less emphasized, so it is feared that there will be a population decline and even extinction in the future, while the population in the wild cannot be ascertained. The larger the harvest quota set and the shorter the harvest period, the larger the natural population that must be available.
Optimizing breeding strategy of Melaleuca cajuputi subsp. cajuputi for a multiple-trait selection: considering the economic weight of traits for oil yield productivity
Authors: Kartikawati N K , Nirsatmanto A , Rimbawanto A , Sumardi  , Prastyono  
Published: November 2021

Abstract

Melaleuca cajuputi breeding in Indonesia is entering the advanced generation cycle and improvements have been achieved for oil concentration and 1.8 cineole-content. In commercial plantations, the total oil yield is an important factor to ensure the sustainability and continuity of oil production. This variable is calculated based on oil concentration, survival rate, and leaf biomass. However, to date, biomass productivity is maintained through silviculture practices rather than genetics. Therefore, genetic improvement for other traits related to leaf biomass is necessary. This study aimed to optimize the breeding strategy of M. cajuputi for a multiple-trait selection using the economic weight of traits related to oil yield. The economic weight was derived by combining selection results in the past generation breeding population and the assessment in genetic gain trials. The study revealed that leaf biomass should be prioritized as selection criteria for oil concentration in the advanced generation breeding based on the current baseline of the achieved gain. The implication of the economic weight to further generation breeding selection for improving oil yield productivity is that the major traits affecting the oil yield should be incorporated simultaneously for selection in the breeding strategy of M. cajuputi. The leaves biomass could be more weighted than other traits in constructing the index for the multiple-trait selection considering the correlation among the three traits observed.
The impact of community capacity building on forest management at Paru Village Forest, Sijunjung Regency, West Sumatera
Authors: Yeny I , Octavia D , Ginoga K L , Suharti S 
Published: November 2021

Abstract
The management of Paru Village Forest in Sijunjung Regency, West Sumatera, has not been optimal, resulting in the low economic value of the farm products and relatively weak bargaining position of the farmers. Asian Forest Cooperation Organization (AFoCO), in collaboration with Forest Research and Development Center, facilitated training through technology transfer to increase farmer’s capacity in forest management; post-harvest product processing; and alternative livelihood development in Paru Village Forest located in Sijunjung Protected Forest Management Unit since 2016 until 2020 to overcome the situation. The study aimed to evaluate the impact of facilitation on increasing the community’s capacity in forest management, post-harvest product processing, and alternative livelihood development. Data collection was carried out by interviewing 34 respondents, selected purposively using semi-structured questionnaires. Collected data and information were analyzed descriptively by comparing before and after situations. The results showed that after AFoCO facilitation, the community’s interaction with the forest has increased by 26.47%. The total number of farmers farming in the forest increased by 16.14%. The study also revealed that AFoCO facilitation had created new alternative sources of income having forward and backward linkage, as well as access to network marketing, thereby increasing the product selling price and marketing reach.
An overview of international trade of Macaca fascicularis from Indonesia based on the CITES trade database
Authors: Sayektiningsih T , Broto B 
Published: November 2021

Abstract
Wildlife trade is one of the main constraints in biodiversity conservation. International wildlife trade is regulated by The Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES). Approximately 34,000 plants and animals are grouped into three Appendices related to the degree of threats posed due to international trade. Annually, CITES provides global trends in wildlife trade through its official website. However, there are some limitations demonstrated by the CITES database, which may indicate unsustainable trade. Using the CITES trade database, we offer an overview of the international trade of crab-eating Macaca (Macaca fascicularis) from Indonesia. Results show that Indonesia had recorded 440 transactions of M. fascicularis in both live animals and non-live forms for 30 years (1990-2019). A total of 117,193 live M. fascicularis had been traded, with the United States being the primary importer. There were challenges in using the CITES trade database in analyzing M. fascicularis trade, including a mismatch between trade volume reported by the exporters and importers, undefined trade purposes, and unitless reports. We hope that our findings can help the community understand international M. fascicularis trade and guide future conservation efforts and policy changes.
Genetic variation of Gmelina arborea Roxb in Trenggalek, East Java
Authors: Setiadi D , Susanto M , Baskorowati L , Mashudi  , Pudjiono S 
Published: November 2021

Abstract
White teak (Gmelina arborea Roxb) is an introduced species of the verbenaceae. This study observed genetic variation of G. arborea in Trenggalek, East Java. Incomplete Block Design was used for this trial comprising four replications, five populations, 50 families, and three tree plots with planting space of 3 x 2 m. Significant differences between seed origins for height and survival rate were exhibited in this study; however, no significant differences between populations for diameter traits at 1st year old. Meanwhile, significant differences between populations for height, diameter, and survival rate existed at second years old. The mean survival rate at first and second years old were 98, 44% and 95, 95%, height were 1.23 m and 2.86 m, and stem diameter was 2.18 cm and 3.66 cm. Moderate heritability’s showed for height and diameter were (h2
i = 0.29; h2
f = 0.30), (h2
i = 0.24; h2
f = 0, 38) and (h2
i = 0.19; h2
f = 0.30), (h2
i = 0.18; h2
f = 0.28). Genetic correlation for height and diameter were rg = 0.75, and rg = 0.89. Genetic variation growth of G. arborea progeny test can be used as basic information of the plus trees selection with good performance. Therefore, the open pollination between remaining plus tress will produce a good quality of seed, which will increase the volume of timber harvested.
The effect of slope aspect on growth attributes of Shorea leprosula Miq. in a rehabilitated hilly landscape
Authors: Attarik N , Pamoengkas P , Rachmat H H 
Published: November 2021

Abstract

Shorea leprosula Miq. is one of Indonesia’s native red meranti species with a higher growth increment than other meranti species. Gunung Dahu Research Forest is a rehabilitated hilly landscape planted with various species of Dipterocarpaceae. This study aims to analyze the growth performance of 24 years old of S. leprosula stands in various slope classes of line planting technique at Gunung Dahu Research Forest. Growth analysis of S. leprosula was carried out by measuring the stem diameter, total tree height, basal area, diameter increment, height increment, and Leaf Area Index (LAI). Slopes were divided into three classes: mild/gentle (15-25%), steep (>25-45%) and very steep (>45%). The results showed that slope class significantly affected height growth and the canopy cover of S. leprosula, but it did not affect the diameter growth. A very steep slope provided the best growth to diameter (average diameter 30.07 cm; MAI 1.25 cm/year) and height (average height 23.7 m; MAI 0.99 m year−1). Furthermore, a linear relationship was formed between the crown cover and slope class in which denser crowns were established in response to a steeper slope (LAI 3.4). Thus, planting S. leprosula as a rehabilitation effort in steep slope landscape delivers beneficial as they showed better growth performance.
Growth of manglid (Manglietia glauca Bl.) from three provenances until age 4.5 years at Candiroto Temanggung Central Java
Authors: Pudjiono S , Mashudi  , Susanto M , Baskorowati L , Setiadi D , Sulaeman M , Hartati R A , Wibowo A 
Published: November 2021

Abstract
This study was carried to examine the best provenance of seed source of Manglietia glauca at 4.5 years old. The study was conducted in Candiroto, Temanggung, Central Java. A Randomized Complete Block Design with three provenances consisting of 15 parent trees from Tasikmalaya, ten parent trees from Sumedang, and 75 parent trees from Sukabumi, West Java, were divided into ten replications. Each replication has 100 plots, and each plot consists of four plants with a planting distance is 4 m x 3m. The plant characteristics, including height and stem diameter, were measured at the age of 0.5, 1.5, 2.5, 3.5 and 4.5 years. Variant analysis and Duncan Multiple Range Test in each measurement stage were performed. The significant differences of plant height among provenances were found from 0.5 to 3.5 years old and were not significantly different afterward. The stem diameter differs significantly among the provenances at 1.5 years old only; afterward, they were not significantly different. The average plant height and stem diameter at 4.5 years old were between 864-917 cm and 12.34-12.48 cm, and they were not significantly different. Therefore, it is possible to choose any seed sources of the three provenances of manglid to be used for plantation.
Mangrove potential and community characteristics for strengthening the utilization of environmental services based on ecotourism: A case study in Karangsong, Indramayu, West Java
Authors: Garsetiasih R , Takandjandji M , Gunawan H , Yuskianti V , Karlina E 
Published: November 2021

Abstract
Mangrove rehabilitation is often challenged by a lack of support from local communities. The success of mangrove rehabilitation can increase the chances of success by increasing the local economy, which will help increase public awareness. This study was conducted in the mangrove forest of Karangsong Village with the aim to identify the potential of mangroves and the characteristics of local communities as capital for the use of environmental services based on mangrove ecotourism. The interview method with semi-structured guidelines was applied to obtain social, economic and public perceptions data. Karangsong mangrove forest is dominated by three species of mangroves, namely Rhizophora mucronata, Rhizophora stylosa and Rhizophora apiculate. It has also become a habitat for various bird species such as javan pond heron, wandering whistling duck, lesser adjutant, imperial pied pigeon, and common sandpiper, which are potential ecotourism objects. The results showed that positive perceptions derived from the economic benefits obtained from mangroves, which have become feedback for mangrove conservation. The role of the driving group is also crucial to maintain the consistency of stakeholders’ enthusiasm to conserve mangroves. Sustainable ecotourism development needs to involve local communities in its management.
Medicinal plant domestication of kayu ules (Helicteres isora Linn.) through stem cuttings: An additional prospective livelihood for the farmer at Bosen Village, East Nusa Tenggara, Indonesia
Authors: Umroni A , Pamungkas D , Prasetyo N A 
Published: November 2021

Abstract

Kayu ules (Helicteres isora) or screw tree has bioactive compounds benefiting for anti-diabetes, antioxidant and antibacterial. In Indonesia, the fruits have been commercially harnessed for traditional medicine. The benefit of kayu ules has attracted some farmers to evolve this species in their garden, however, the domestication technique has not mastered well yet. Therefore, this study aimed to domesticate kayu ules under a home garden (HG) and analyze the feasibility of cultivating kayu ules through stem cuttings. Kayu ules development underwent two split HG’s: tree shade (HG1) and open area (HG2). Other nursery performances at each home garden were made with no shade (N1), with shading net (N2) and a coco-leaf shade (N3). The result showed that within 60 days on HG1, the best survival was on N2 with 76% of survival and declined on N1 at 30%. Conversely, under HG2, N1 gave the best survival compared to N2, 81% and 46% each. Meanwhile, N3 was in between N1 and N2 on HG1 (56%) and HG2 (58%). The shading treatments, which allowed 20 to 40 % sunlight to pass through, effectively increased the survival of stem cuttings. According to an online market platform at the highest price, nursery N1 delivered the highest IRR at 106% and the second was on N3, followed by N2, which were 104% and 85%, respectively.
Estimating land cover map accuracy and area uncertainty using a confusion matrix: A case study in Kalimantan, Indonesia
Authors: Sari I L , Weston C J , Newnham G J , Volkova L 
Published: November 2021

AbstractRemote sensing is widely used to generate land cover maps, but the maps derived from remote sensing often produce accuracy below expectations for map error. Therefore, quantifying map accuracy is essential for reporting the precision of an estimated area. This study describes a simple framework for assessing map accuracy and estimating land cover area uncertainty for a land cover changes map for Kalimantan in 2012-2018. This study compared simple random sampling and stratified random sampling to determine suitable procedures for estimating accuracy and area uncertainty. The validation relies on the visual assessment of high spatial resolution images such as SPOT 6/7 and high-resolution temporal images from Open Foris Collect Earth. Our results showed that the land cover change map assessed using random sampling had an overall accuracy of 74% while using stratified random sampling had an overall accuracy of 75%. Thus, for tropical regions with high cloud cover, we recommend using stratified random sampling. The major source of map error was in differentiating between native forest and plantation areas. Future map improvement requires more accurate differentiation between forest and plantation to better support national forest monitoring systems for sustainable forest management.
Growth assessment of upper hill dipterocarp (Shorea platyclados) at the various slope in a rehabilitated landscape
Authors: Reksawinata F , Pamoengkas P , Rachmat H H 
Published: November 2021

Abstract
Rehabilitation aims to improve landscape function while increasing its resilience to climate change. Gunung Dahu research forest is a rehabilitated hilly landscape that is planted with more than 25 dipterocarp species, including an upper hill dipterocarp tree of Shorea platyclados at various site conditions. This study aimed to assess the growth performance of S. platyclados at five sloping levels class of 0-8%, 8-15%, 15-25%, 25-45%, and >45%. Observed growth attributes were stem diameter, total height, basal area, Mean Annual Increment (MAI), and Leaf Area Index (LAI), and diameter. The results showed that sloping levels significantly affect the growth performance of the planted trees. The highest slope level (>45%) supported the highest average stem diameter and tree height (41.48 cm and 20.86 m). The sloping level of >45%, 25-45%, 15-25%, 8-15%, and 0-8% yield different value of average diameter which were 41.48 cm, 35.86 cm, 36.54 cm, 34.61 cm, and 31.23, while the average height were 20, 86m, 19.78 m, 16.72 m, 18.84 m, 18.61 m respectively. Thus, the upper hill dipterocarp of S. platyclados is a prospective native tree species for rehabilitating hilly upland landscapes.
Developing sustainable and profitable solutions for peatland restoration
Authors: van der Meer P J , Tata H , Rachmanadi D , Arifin Y F , Suwarno A , van Arensbergen P 
Published: November 2021

Abstract
Over the past decades, a large area of peat swamp forests in Indonesia has been cleared of the original forest cover and developed as agricultural lands. Several important issues are associated with the clearing and drainage of peat forest areas, including loss of biodiversity, increased emission of Green House Gases (GHGs), and smoke/haze pollution. Moreover, the development of large-scale oil palm plantations did not always improve local livelihoods. We describe how the restoration of degraded peat areas through paludiculture and inclusive value chains development could result in sustainable livelihoods and climate-resilient peat areas in Indonesia. We illustrate this by describing business cases of seven valuable native peat swamp forest species which could provide income for local forest communities. An analysis of the sago value chain shows that sago cultivation has a positive contribution in providing economic benefits to all actors, including local farmers, although improvements could be made for better value sharing. Paludiculture has important environmental benefits in comparison to existing drainage-based peat cultivation systems. The combination of environmental and economic benefits is an important incentive to develop the paludiculture system further to improve current peat management systems and assist further peat restoration in Indonesia. The development and implementation of paludiculture systems, particularly species selection, should have more community participation to ensure the sustainable restoration of degraded peat areas.
Genetic diversity of Aquilaria microcarpa Baill. in Kalimantan using RAPD Markers
Authors: Qiptiyah M , C Widyatmoko A Y P B , Nurtjahjaningsih I L G , Prihatini I 
Published: November 2021

Abstract

Aquilaria microcarpa is one of the agarwood producers species included in the endangered category based on the IUCN red list. Kalimantan is one of the natural distributions of this species. The high demand for agarwood causes this species to be commonly cultivated in community plantations. This study aimed to assess the genetic diversity of A. microcarpa using the RAPD markers. Forty-four leaf samples of A.microcarpa were collected from the local community in Gumbil (South Kalimantan) and Sanggau (West Kalimantan). The results showed that 9 out of 24 RAPD primers were stable in amplification, and polymorphic totally consisted of 49 polymorphic loci. The values of unbiased expected heterozygosity (uHE) were at a low level; they ranged between 0.152 (Gumbil II) to 0.249 (Gumbil I). The average genetic distance between Gumbil and Sanggau is 0.1733, related to their geographic distance. A private allele was only found at Gumbil at locus G18/540 and Sanggau at locus G18/550, respectively. A great DA value between Gumbil I and II showed that the plantations originated from different seed sources. AMOVA also verified the differences between the two populations. This finding has important implications in managing plantations and seeds transfer.
Strategies for rehabilitation of Tuk Anjar springshed in Mount Merbabu National Park
Authors: Nugroho A W , Miardini A , Susanti P D , Siswo  , Dewi K , Rusiani  , Aprazah A S 
Published: November 2021

Abstract
Spring is one of the freshwater sources for human life and as a groundwater potential indicator. The springs’ quality and the quantity depend on the springshed condition. However, anthropogenic activities such as forest burning, forest encroachment, illegal logging, and land-use change have caused springshed degradation. Therefore, a proper and efficient springshed rehabilitation strategy is urgently needed. This research was carried out during September-December 2020 to formulate Tuk Anjar springshed rehabilitation strategies at Mount Merbabu National Park, Indonesia. The strategies cover methods to delineate the springshed, identify site characteristics and design rehabilitation plots. Springshed delineation was done using spatial analysis. Site characteristics were obtained by field surveys and laboratory analysis through data collection in a 10x10 m sample plot (spring protection) and 20x20 m (springshed protection). The spatial analysis result showed that Tuk Anjar springshed area was 35.06 ha, with zone I: 0.01 ha, zone II: 2.54 ha, and zone III: 32.5 ha. The priority area to rehabilitate is zone II with a low tree density. Tree species selection is based on on-site species matching, optimal rainwater storage, and having fruits as an animal feed source. Species from the genus of Ficus like wilodo, kebeg and beringin should be used since it has great potential in water storage.