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All Journal Jurnal Tumbuhan Obat Indonesia JURNAL PEMULIAAN TANAMAN HUTAN Majalah Kedokteran Gigi Indonesia Indonesian Journal of Biotechnology UNEJ e-Proceeding REINWARDTIA TheJournalish: Social and Government Jurnal Ilmu Kehutanan Reinwardtia

Atus Syahbudin

Laboratory Of Dendrology And Ethnobotany, Faculty Of Forestry, Universitas Gadjah Mada, Bulaksumur Yogyakarta, Indonesia

Author-ID : 724646

Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Decision Sciences, Operations Research & Management Dentistry Education Environmental Science Immunology & microbiology Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology Public Health Social Sciences

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ASOSIASI VEGETASI TANAMAN RAMBATAN KETAK (Lygodium circinatum (Burm.)Sw.) di KPHL RINJANI BARAT, PULAU LOMBOK, NUSA TENGGARA BARAT Endah Wahyuningsih; Eny Faridah; Budiadi Budiadi; Atus Syahbudin
Jurnal Pemuliaan Tanaman Hutan Vol 13, No 2 (2019): Jurnal Pemuliaan Tanaman Hutan
Publisher : Center for Forest Biotechnology and Tree Improvement (CFBTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jpth.2019.13.2.85-94

Ketak (Lygodium circinatum (Burm.) Sw.) is a fern plant and its growth requires other plants as a host plant for climbing of tendrils to get light. Information of vegetation association of host plant is needed, due to it is considered to have an influence on fern growth and productivity. This data and information is important to develop a strategy of ketak cultivation. This research was aimed to determine vegetation association of ketak host plant in its habitat. The study used purposive systematic sampling by survey technique based on altitude i.e. 0-249, 250-499 and 500-750 m asl. There are 10 of observation plot with dimension of 20 m x 20 m. In each plot, an analysis of vegetation association of ketak host plant to determine association between species, type of interaction and index of association between species of ketak host plant. The results showed that the vegetation association of ketak host plants in each altitude classification which had a positive and strong association are 7 pairs species in altitude of 0-249 m asl. and altitude 250 – 499 m asl., and 10 pairs species in the altitude 500 – 750 m asl.

The effects of population size on genetic parameters and mating system of sandalwood in Gunung Sewu, Indonesia Yeni Widyana Nurchahyani; Sapto Indrioko; Eny Faridah; Atus Syahbudin
Indonesian Journal of Biotechnology Vol 20, No 2 (2015)
Publisher : Universitas Gadjah Mada

We combined feld observations with isoenzyme analysis to compare population demographic and its effects on genetic diversity and mating systems, among six populations of sandalwood in Gunung Sewu, Indonesia, during March to August 2015. This endangered economic-important species was originated from the southeastern parts of Indonesia, but is recently occured as new landraces in Gunung Sewu, Java island. The observed heterozygosity varied from Ho 0.184 to 0.385 in parents, and from Ho 0.083 to 0.348 in offspring levels, based on the degree of clonality and genetic base. Most of genetic variation is distributed within populations, and only 2.7% were presented among populations, that was indicated by the low DST and FST value (HT 0.30; HS 0.276; DST 2.4%; FST 7.98%). A dendrogram indicated a grouping of populations into three clusters. However, there were seemed to be no association between geographical and genetic distance. Genetic depletion occured due to (i) clonality events as result of heavy-exploitation and/or natural disturbance which induced root suckering, (ii) genetic drifts and bottleneck effects, (iii) the founder effects due to parental low diversity, and (iv) the alteration on mating systems to be more inbreeders. Some of the results confrmed a “reproductive assurance prediction” while some others were contradicting this. It seemed that genetic diversity and mating systems are not much affected by population size, but more by the parental heterozygosity and the degree of clonality. Our results emphasized the importance of populations’ genetic base or parental genetic diversity to naturally maintain the genetic and evolutionary processes under equilibrium conditions.

THE USE OF CEMARA UDANG (Casuarina equisetifolia) FOR AGRICULTURAL PURPOSES IN THE SOUTHERN COAST OF YOGYAKARTA Atus Syahbudin; Dwi Tyaningsih Adriyanti; Anisa Handayani; Hu Bai; Katsuya Osozawa; Ikuo Ninomiya
UNEJ e-Proceeding International Conference on Agribusiness Marketing (ICAM) 2012, Faculty of Agriculture, University o
Publisher : UPT Penerbitan Universitas Jember

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An exploration along the Southern Coast of Yogyakarta and deep interview with276 respondents in the Southern Coast of Kulon Progo and Gunungkidul Regencies hadbeen conducting during January 2010 and February-May 2012. Respondents recognizedthat before the establishment of Casuarina equisetifolia they faced problems like strongwind in the agricultural land (81.6%), uncultivated land near the coast (20.3%), agriculturecrops die because of salt water (17%), and others (11.3%). During 16 years theestablishment of C. equisetifolia has been creating vegetative wind barrier due to Attims'tree architecture model. C. equisetifolia reduces the use of dried coconut leaf/blarak(29.3%) and objectifies green coastal landscape, which makes farmer, fisherman,inhabitant, visitor and merchant become pleasant. In addition, C. equisetifolia providesbenefits as shady tree for agricultural nursery (10.9%), mulch (10.4%), fertilizer (3.3%),and many kinds (49.4%). Reduction in the use of blarak, mulch and purchased fertilizerwill increase farmer’s income because the cost of labor, fertilizer and mulch decrease.

EKSPLORASI ANTIOKSIDAN TUMBUHAN OBAT YANG BERASAL DARI TAMAN NASIONAL GUNUNG MERAPI YOGYAKARTA INDONESIA Ari Nurwijayanto; Mohammad Na’iem; Atus Syahbudin; Subagus Wahyuono
Jurnal Tumbuhan Obat Indonesia Vol 13 No 1 (2020): Jurnal Tumbuhan Obat Indonesia
Publisher : Balai Besar Penelitian dan Pengembangan Tanaman Obat dan Obat Tradisional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22435/jtoi.v13i1.1983

ABSTRACT Mount Merapi National Park (MMNP) has known for its high biodiversity. However, exploration related to the potential for antioxidant activity of the medicinal plants in this region is still very limited. Therefore, the aim of this research was to explore of medicinal plants from MMNP and to evaluate the antioxidant activity of the plants. The research began with the collection and identification the medicinal plants to determine the scientific names. Then, plants that have been identified, are dried, mashed and macerated with ethanol (96%). The ethanol extract were evaluated for antioxidant activity using 1,1-Diphenyl-2-Picrylhydrazyl (DPPH) to determine the IC50 value and compared with positive control (ascorbic acid). The results of this exploration were obtained 50 plant species which have been identified its scientific names and classified into 16 families. The largest distribution of plant species was belongs to the family Poaceae, followed by Asteraceae and Rubiaceae. Antioxidant activity assay of the medicinal plant resulted three plant species with IC50 values less then 6 ppm, i.e. Melastoma malabathricum, Phyllanthus urinaria, and Clidemia hirta. The alkaloid compound detected in M. malabathricum expected to be a potential antioxidant compound. This information can be used as a basic data for developing alternative sources of antioxidants and as an new drug raw materials. Keywords: medicinal plants, Merapi Volcano National Park, antioxidants, DPPH ABSTRAK Taman Nasional Gunung Merapi (TNGM) telah lama dikenal dengan keanekaragaman hayatinya yang tinggi. Akan tetapi, eksplorasi terkait potensi aktivitas antioksidan pada koleksi tumbuhan obat di wilayah tersebut masih sangat terbatas. Fakta tersebut yang mendasari tujuan dari penelitian ini, yaitu eksplorasi potensi aktivitas antioksidan tumbuhan yang berasal dari TNGM. Penelitian ini diawali dengan pengumpulan dan identifikasi nama ilmiah tumbuhan obat yang tumbuh di wilayah tersebut. Tumbuhan yang telah teridentifikasi kemudian dikeringkan, dihaluskan dan dimaserasi dengan etanol (96%). Ekstrak etanol yang diperoleh kemudian diuji aktivitas antioksidannya melalui penentuan penangkapan radikal bebas menggunakan 1,1-Diphenyl-2-Picrylhydrazyl (DPPH) dengan menentukan nilai IC50-nya dan dibandingkan dengan kontrol positif (asam askorbat). Hasil dari kegiatan eksplorasi ini diperoleh 50 spesies tumbuhan yang telah berhasil diidentifikasi nama ilmiahnya dan digolongkan menjadi 16 famili. Distribusi spesies tumbuhan terbesar termasuk dalam famili Poaceae, diikuti Asteraceae dan Rubiaceae. Pengujian aktivitas antioksidan pada 50 sampel tumbuhan diperoleh tiga spesies tumbuhan dengan nilai IC50 kurang dari 6 ppm, yaitu Melastoma malabathricum, Phyllanthus urinaria, dan Clidemia hirta. Kandungan alkaloid yang terdeteksi pada M. malabathricum, diduga sebagai senyawa antioksidan yang sangat potensial. Informasi tersebut dapat digunakan sebagai dasar pengembangan sumber antioksidan alternatif untuk inovasi bahan baku obat baru.

Variasi Cendana (Santalum album Linn.) Berdasarkan Morfologi Daun dan Bunga di Desa Petir, Rongkop, Gunungkidul Ridla Arifriana; Sapto Indrioko; Atus Syahbudin
Jurnal Ilmu Kehutanan Vol 11, No 1 (2017)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Cendana (Santalum album Linn.) merupakan salah satu spesies yang digunakan sebagai tanaman rehabilitasi, dikenal mampu tumbuh di lahan dengan keterbatasan hara, dan memiliki nilai ekonomi tinggi dari kandungan minyak santalol yang wangi. Cendana merupakan spesies asli di Provinsi Nusa Tenggara Timur (NTT) namun dijumpai permudaan alami di beberapa kawasan Kabupaten Gunungkidul, Daerah Istimewa Yogyakarta (DIY), salah satunya di Desa Petir, Kecamatan Rongkop, Kabupaten Gunungkidul. Permudaan alami tersebut memiliki variasi morfologi yang relatif besar pada populasinya. Penelitian ini bertujuan mendeskripsikan variasi cendana dan mengklasifikasikan cendana yang ditemui di lokasi penelitian berdasarkan karakter morfologi. Bahan yang digunakan dalam penelitian ini berupa (1) cendana (meliputi organ generatif dan vegetatif) yang diambil secara sengaja (purposive) dan (2) Ximenia americana sebagai spesies pembanding. Data dideskripsi secara morfologi dan dilakukan analisis filogeni menggunakan metode maksimum parsimoni dengan penanda morfologi. Karakter morfologi cendana bervariasi pada ukuran dan bentuk daun, warna tenda bunga (perigonium), bunga, bentuk cuping, bentuk appendiks, warna batang, bentuk dan ukuran buah. Ditemui dua karakter cendana yang belum dijelaskan pada sumber sebelumnya di Indonesia yaitu bentuk daun lanset dan bulat telur serta karakter warna tenda bunga (perigonium), bunga oranye. Hasil analisis filogeni menunjukkan karakter daun kecil cendana lebih dekat dengan yang dimiliki oleh spesies pembanding. Karakter diagnostik secara tegas mengelompokan ukuran daun kecil dan ukuran daun besar. Ukuran daun kecil pada kisaran 2,8-7,7 cm sampai dengan 1,1-2,2 cm dan 7,9-10 cm sampai dengan 3,1-4 cm untuk cendana berdaun besar. Variasi bentuk daun serta warna bunga ditemukan pada masing-masing kelompok ukuran daun.Variation of Sandalwood (Santalum album Linn.) Based on Morphology of Leaves and Flowers at Petir Village, Rongkop, GunungkidulAbstractSandalwood (Santalum album Linn.) is one of the flora that are commonly used as rehabilitation species, known as a plant that can grow in a lack of nutrient soil, and has a high economic value of santalol oil. This plant is indigenous in East Nusa Tenggara but it has a natural regenaration in some areas of Gunungkidul Yogyakarta, including in Petir Village, Rongkop, Gunungkidul. Morphological variation of Sandalwood in this area was relatively high. This research aimed to describe and classify sandalwood variations that exist in the research site based on the morphological characters. The materials used in this study were (1) sandalwood as the target species (including generative and vegetative organs) with purposive sampling and (2) Ximenia americana as the outgroup species. Data were analyzed using description and phylogeny analysis using maximum parsimony method with morphological markers. Morphological characters of Sandalwoods were varied in size and leave shapes, flowers perigonium, lobes shapes, appendices shapes, stem color, shapes and fruit size. There were two characters that have not been described in the previous sources in Indonesia, form of leaves (oblong and oval) and orange color of perigonium. Phylogeny results showed that a small leaf sandalwood character was closer to the outgroup character. Diagnostic characters explicitly classified small leaf size and leaf size large. Size of small leaf was from 2.8 -7.7 cm to 1.1-2.2 cm and from 7.9-10 cm to 3.1-4 cm for large leaf. Leaf form and colour of flower variation was found in each group of leaf size.

Variasi Karakter Pembungaan Antar Varian dan Ras Lahan Cendana Sepanjang Gradien Geografis di Gunung Sewu Yeni Widyana Nurcahyani Cahyaningrum; Sapto Indrioko; Eny Faridah; Atus Syahbudin
Jurnal Ilmu Kehutanan Vol 11, No 2 (2017)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Cendana merupakan spesies asli Indonesia bagian timur, yang menjadi ras lahan di Gunung Sewu. Sembilan ras lahan di Gunung Sewu, seluruhnya tersusun atas tiga varian yang berbeda struktur dan warna bunganya (MK, merah kecil; MB, merah besar; dan KB, kuning besar). Penelitian ini bertujuan untuk menganalisis karakter pembungaan ketiga varian cendana di Gunung Sewu pada periode pembungaan tahun 2015; di tiga ras lahan yang mewakili tiap zona yaitu Nglanggeran (Zona Utara), Bleberan (Zona Tengah), dan Petir (Zona Selatan). Observasi meliputi fenologi, kemasakan organ reproduksi, display, dan struktur pembungaan. Struktur pembungaan dan longevity organ reproduksi berbeda antar varian. MB dan KB didominasi warna merah dan marun, perigonium lebih besar, organ reproduksi lebih panjang, posisi putik sejajar/lebih rendah dari benang sari, dan longevity lebih singkat. MK didominasi kuning hingga oranye, lebih kecil, posisi putik sejajar/lebih tinggi, dan longevity lebih lama. Display pembungaan berbeda antar ras lahan, namun tidak berbeda antar varian. Petir, dengan ukuran populasi terbesar, memproduksi paling banyak pohon berbunga dan total bunga untuk seluruh varian. Ras lahan dan varian berbunga dua kali setahun, namun dengan inisiasi dan durasi yang berbeda. KB berbunga lebih awal di seluruh ras lahan, sedangkan MB paling akhir. MK memiliki durasi pembungaan terpanjang. Perbedaan antar ras lahan lebih dipengaruhi oleh faktor lingkungan seperti ketinggian, jenis tanah, dan iklim. Ras lahan yang lebih rendah, kering, dan panas berbunga lebih awal dan singkat. Peningkatan temperatur dan turunnya status air tanah menyebabkan keguguran massal yang diikuti sequential replacement, mengakibatkan perubahan frekuensi pembungaan. Strategi konservasi cendana di Gunung Sewu perlu dirancang berbasis keragaman genetik, sinkroni pembungaan, dan kompatibilitas antar varian, dengan tetap mempertimbangkan keberagaman tempat tumbuhnya.Kata kunci: cendana; Gunung Sewu; pembungaan; ras lahan; varian bunga The Flowering Characters Variation Among Floral Variants and Landraces Along Geographical Gradients in Gunung SewuAbstractSandalwood was origin to the south-eastern islands of Indonesia, but is recently occured as new land-races in Gunung Sewu, Java island. All of land-races consisted of three floral variants (MK, refers to “merah kecil”; MB, “merah besar”; and KB, “kuning besar”, respectively). This research aimed to determine flowering of these variants among three of land-races which were representing geographical zone in Gunung Sewu: Nglanggeran, Blebera, and Petir. Observation on phenology, sexual organs maturity, floral structure, and display was conducted in 2015. Floral structures varied among variants. MB and KB dominated by red and maroon colors, possessed bigger perigonium, longer sexual organs but with shorter longevity, and similar/lower position of stylus to stamens. MK dominated by yellow to orange colors, smaller, similar/higher position of stylus, and longer longevity. Floral display varied among land-races but were similar among variants. Petir, with biggest population size, produced the most abundant flowers and flowering trees at all variants. Sandalwood flowered twice a year in all of land-races and variants, however, the onset and duration varied. KB flowered earliest while MB was the latest. MK possessed longest flowering period. Flowering varied among land-races due to the altitude, soils, and climatic differences. Lower altitude, drier, and warmer sites flowered earlier and shorter. Mass abortion and sequential replacement, resulting in the alteration on flowering frequency, occured due to the extreme temperature increment. Conservation strategy should be arranged based on genetic differentiation, flowering differences, and crossing abilities among variants. Differences of landscapes, which may contribute to the differences of environmental conditions and flowering processes, should also be considered.

PCR Primer Spesifik Berdasarkan Gen Cytochrome b untuk Deteksi Garangan (Herpestes javanicus) secara Molekuler Sena Adi Subrata; Subeno Subeno; Atus Syahbudin
Jurnal Ilmu Kehutanan Vol 14, No 1 (2020)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Garangan (Herpestes javanicus) merupakan salah satu spesies meso-carnivora yang berperan penting dalam ekosistem sebagai pemangsa. Kehadirannya dianggap mampu mengendalikan populasi spesies mangsa, termasuk beberapa spesies hama. Namun anggapan ini dianggap hanya anekdot karena kekurangan data ekologis pendukungnya sebagai dampak dari kesulitan pengamatan visual atas spesies ini. Penelitian ini bertujuan untuk merancang PCR primer untuk deteksi Garangan secara molekuler dari material organik yang ditinggalkan, misalnya kotoran. Perancangan PCR primer dimulai dengan memilih penanda spesifik Garangan yang melibatkan 51 sekuen DNA gen Cytochrome-b dari 19 spesies karnivora Jawa, menentukan primer forward dan reverse, dan menguji in-silico dan in vitro dari primer yang berhasil dirancang. Proses tersebut dilakukan dengan bantuan software MEGA 5 dan SP-Designer, dan memanfaatkan basis data genetik dari GenBank (NCBI). Uji in silico dan in vitro menunjukkan bahwa sekuen primer forward 5’- CAAATCACACCCACTCATTAAAATC-3’ dan reverse 5’-TGTGGGTTACTGATGAAAAGG-3’ akan mampu mendeteksi Garangan secara molekuler dari material organik spesies ini. Penelitian ini berkontribusi dalam pengumpulan data dasar kehadiran Garangan untuk mengumpulkan informasi lanjut tentang okupansi, distribusi spesies, dan pakannya. Informasi ini merupakan fondasi untuk memahami peran spesies ini dalam ekosistem. Specific PCR Primers Based on Cytochrome-b Gene for Molecular Detection of JavanMongoose (Herpestes javanicus)AbstractJavan Mongoose is a meso-carnivore species that have an important role in ecosystem as a predator. It is believed that its occurrence controls prey populations including some pest species. However, the belief is an anecdote because of lacking supportive data. Difficulty in visually observing the species is a major problem preventing data collection. This study aims to design PCR primer for detecting the Mongoose molecularly from organic material remaining, such as feces. The design starts with selecting specific marker from 51 DNA sequences of cytochrome-b. The DNA sequences were of 19 Javan carnivore collected from GenBank (NCBI). PCR primers were designed and tested using both in-silico and in-vitro techniques. The sequence collection and selection, and primer design process employed MEGA 5 and SP-Designer software. We successfully designed PCR primers: forward 5’- CAAATCACACCCACTCATTAAAATC-3’ dan reverse 5’-TGTGGGTTACTGATGAAAAGG-3’. The primer is capable of detecting Javan Mongoose from remaining organic material. The study contributed to basic data collection of Javan Mongoose for advanced studies such as occupancy modeling, species distribution modeling and diet analysis. This information is fundamental for understanding the role of the Javan Mongoose in an ecosystem.

Comparison Effect of Leaves and Bark Extract of Eucalyptus (Melaleuca leucadendra), Sappan (Caesalpinia sappan), and Cinnamon (Cinnamomum zeylanicum) to Reduce Streptococcus mutans Biofilm Formation Utami, Trianna Wahyu; Ekananda, Bernadetha Nathania; Anjani, Yasmin Regita; Listyarifah, Dyah; Nur, Asikin; Syahbudin, Atus
Majalah Kedokteran Gigi Indonesia Vol 9, No 1 (2023): April
Publisher : Faculty of Dentistry, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/majkedgiind.83283

To evaluate the effect of eucalyptus, sappan, and cinnamon leaf and bark extract on the percentage of S. mutans biofilm formation. The test group was divided into a negative control (1% Dimethyl sulfoxide), a treatment group (eucalyptus, sappan, and cinnamon leaves and bark at concentrations of 50%, 25%, and 12.5%, respectively), and a positive control (0.2% chlorhexidine). Each concentration of eucalyptus, sappan, and cinnamon leaves and barks extract, Brain Heart Infusion Broth (BHI-B), bacteria according to the McFarland 0.5 standard, a positive control, and a negative control were added to a 96-well microplate. They were incubated at 37 °C for twenty-four hours before being rinsed with phosphate buffer saline (PBS) and stained with 0.1% crystal violet. The optical density was then measured using a microplate reader with a 540 nm wavelength. The absorbance value is then factored into the percentage of bacterial adhesion inhibition formula. A statistical test revealed a significant difference (p < 0.05) in the percentage of inhibition between the three extracts of leaves and bark and the negative control group (1% DMSO). There is a significant difference between all leaves and barks concentration and the positive control group except the 50% concentration of sappan leaf group and 50% concentration of cinnamon leaf group. The sappan leaf and cinnamon leaf at 50% concentration exhibit no significant difference (p > 0.05) with the positive control. Eucalyptus, sappan, cinnamon leaves and barks at a concentration of 50% demonstrated effectiveness of the extractant in inhibiting the formation of biofilm masses by S. mutans in comparison with the other group.

Optimalisasi Sumberdaya Air Untuk Pemenuhan Kebutuhan Listrik Ramah Lingkungan Menuju Ketahanan Pangan Berkelanjutan Listyaningrum, Noviyanti; Syahbudin, Atus
TheJournalish: Social and Government Vol. 4 No. 5 (2023): Special Issue
Publisher : CV The Journal Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55314/tsg.v4i5.611

Sumberdaya air di lereng Gunung Lawu, Desa Girikerto mengalir di perkebunan teh Jamus. Air tersebut menjadi input PLTMh. Penelitian terdahulu tentang air dan energi listrik difokuskan pada lahan pertanian sawah dan ladang sehingga diperlukan penelitian yang mengkaji kaitan sumberdaya air yang mendukung ketahanan pangan berbasis energi terbarukan pada lahan perkenunan. Penelitian dilakukan secara campuran kuantitatif dan kualitatif, dengan dukungan data debit, daya, dan energi total. Analisis data dilakukan secara deskriptif. Hasil menunjukkan bahwa sumberdaya air di lokasa kajian dapat dijadikan sumber energi terbarukan. Air menjadi input pembangkit tenaga listrik PLTMh. PLTMh menjadi alternatif energi terbarukan yang berkontribusi nyata dalam aplikasi energi hijau. PLTMh pun membantu pengolahan komoditas perkebunan teh pada pabrik yang relatif ramah lingkungan karena tidak bising dan hemat enrrgi. PLTMh merupakan wujud energi terbarukan yang mendukung ketahanan pangan, khususnya komoditas perkebunan dengan memanfaatkan air lokal. Dalam jangka panjang, air, energi, dan ketahanan pangan di lokasi penelitian mendukung aksi pencegahan perubahan iklim global.

MODELLING THE POTENTIAL DISTRIBUTIONS OF SAWO KECIK (MANILKARA KAUKI (L.)) DUBARD USING MAXENT TO SUPPORT CONSERVATIONS OF HISTORICAL AND CULTURAL VEGETATIONS IN DAERAH ISTIMEWA YOGYAKARTA PROVINCE Andri Wibowo; Atus Syahbudin; Adi Basukriadi; Erwin Nurdin
Reinwardtia Vol. 22 No. 1 (2023)
Publisher : BRIN Publishing (Penerbit BRIN)

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Modelling the potential distributions of Sawo Kecik (Manilkara kauki (L.)) Dubard using MaxEnt to support conservations of historical and cultural vegeta-tions in Daerah Istimewa Yogyakarta Province. Reinwardtia 22(1): 55‒67. — Sawo kecik or Manilkara kauki (L.) Dubard, of the Sapotaceae family as it is formally known, is one of the species with significant cultural values in Yog-yakarta Province (DIY) culture because it symbolizes social righteousness. In connection with this, Yogyakarta's mu-nicipal and district governments have been encouraged to plant sawo kecik. Despite these efforts, there is still a lack of knowledge regarding the possible range of this species, and this knowledge is essential to promoting the conservation of M. kauki in DIY. With the help of isothermality, precipitation of driest month, precipitation seasonality, precipita-tion of driest quarter, and precipitation of warmest quarter data, this study tries to simulate the probable distributions of M. kauki throughout cities and districts in DIY. The model estimated 1,275 km2 of DIY areas was suitable for M. kauki that concentrated in the central parts, spanning from the west to the east of DIY. Yogyakarta City followed by Sleman District has the largest areas categorized from high to very high suitable for M. kauki. While, Gunung Kidul followed by Kulonprogo Districts have the largest areas categorized as low suitable. To conclude, M. kauki can adapt areas with moderate precipitation as low as 20 mm during driest month and as low as 100 mm during driest quarter. During warmest quarter, M. kauki requires precipitation with value of 700 mm. The conservation effort and M. kauki planting should then concentrate on Yogyakarta City and Sleman District since such locations are thought to have high appropriateness for the species.

Co-Authors . Subeno Adi Basukriadi Andri Wibowo Anisa Handayani Anjani, Yasmin Regita Ari Nurwijayanto Asikin Nur Budiadi Budiadi Dwi Tyaningsih Adriyanti Dyah Listyarifah Ekananda, Bernadetha Nathania Endah Wahyuningsih Eny Faridah Eny Faridah Erwin Nurdin Hu Bai Ikuo Ninomiya Katsuya Osozawa Listyaningrum, Noviyanti Mohammad Na’iem Ridla Arifriana Sapto Indrioko Sapto Indrioko Sapto Indrioko Sena Adi Subrata Sena Adi Subrata Subagus Wahyuono Trianna Wahyu Utami Yeni Widyana Nurcahyani Cahyaningrum Yeni Widyana Nurchahyani

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