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All Journal MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management Jurnal Ilmu Pertanian Indonesia Jurnal Silvikultur Tropika (JST) MEDIA KONSERVASI Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences Jurnal Penelitian Hutan dan Konservasi Alam Proceeding International Conference on Global Resource Conservation Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) BERITA BIOLOGI Jurnal Hutan dan Masyarakat Biosaintifika: Journal of Biology & Biology Education Jurnal Agrotek Lestari Jurnal Pusat Inovasi Masyarakat Jurnal Sylva Lestari JURNAL HUTAN TROPIS Jurnal Ilmu Kehutanan Jurnal Riset Multidisiplin Edukasi
Iwan Hilwan
Department Of Silviculture, Faculty Of Forestry, Bogor Agricultural University, Bogor, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Education Energy Environmental Science Health Professions Materials Science & Nanotechnology Social Sciences Other

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ETNOBOTANI PANDAN (PANDANACEAE) DI TAMAN NASIONAL BUKIT DUABELAS, JAMBI Dimas Prasaja; Muhadiono Muhadiono; Iwan Hilwan
BERITA BIOLOGI Vol 14, No 2 (2015)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v14i2.1816

Abstract

This research was aimed to study ethnobotany and the diversity of Pandanaceae that utilized by the people of Orang Rimba tribe who lives in Bukit Duabelas National Park, Jambi. The results of this study showed there were six species of two genera (Benstonea and Pandanus)that were used for habitual and religion activities of those tribes. Only four species were used for crafts, especially mat and wallets (sumpit):Pandanus furcatus Roxb.; Pandanus labyrinthicus Kurz ex Miq.; Pandanus immersus Ridl.; and Benstonea atrocarpa (Griff.) Callm. & Buerki. Two species were used as a ceremony’s complement materials and tribe’s rituals: Pandanus labyrinthicus Kurz ex Miq. (ritual of marriage), and Benstonea atrocarpa (Griff.) Callm. & Buerki to kiding (the procession before the rice planting season begins).Only one species that was used as a material for the house’s or cottage’s roof, Benstonea kurzii (Merr.) Callm. & Buerki. Leaves were the part of the plant which used for the Orang Rimba daily needs.The skill for making handicraft were obtained iterally from generations. The population of pandan assumed to be decreased without effort for the cultivation and conservation.
Analisis Keanekaragaman Jenis Tumbuhan Di Hutan Adat Nenek Limo Hiang Tinggi Nenek Empat Betung Kuning Muara Air Dua, Kapupaten Kerinci, Jambi Evan Vria Andesmora; Muhadiono Muhadiono; Iwan Hilwan
Jurnal Hutan dan Masyarakat VOLUME 13 NOMOR 2, DESEMBER 2021
Publisher : Fakultas Kehutanan, Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (679.354 KB) | DOI: 10.24259/jhm.v13i2.14747

Abstract

ABSTRACT: An indigenous forest is a form of natural wealth in Indonesia. Nenek Limo Hiang Tinggi Nenek Empat Betung Kuning Muara Air Dua Indigenous Forest serves to provide a long-term guarantee of water availability, protect rural soil fertility and biodiversity, and help to secure the TNKS core zone. Collecting data was through vegetation analysis with a combination of transect and plot methods. the data was calculated on the importance value, diversity index, evenness index, and a description of the forest profile. The results showed that the Indigenous Forest contained 52 plant species dominated by Syzygium pycnanthum with an IVI of 59.16%. The dominance of the pole level was Santiria tomentosa 47.02%, sapling level was Santiria tomentosa by 45.89%, the seedling was Calamus marginatus with 61.53% and lower plants were dominated by Freycinetia banksii 93.43%. The highest species diversity was sapling with 3.64. Meanwhile, the highest evenness value was at the pole level with 0.80. The dominant type of Santiria tomentosa was influenced by the variables of sand, dust, clay, and H2O. Altingia excelsa affected by C and N, Styrax benzoin influenced by KCl and P2O5, Syzygium pycnanthum affected by KCl and P2O5 and Lithocarpus elegans influenced by sand, dust, clay, and H2O.
Komposisi, Struktur dan Cadangan Karbon pada Agroforestri Kopi Arabika di Kabupaten Aceh Tengah, Aceh Maulidil Fajri; Nurheni Wijayanto; Iwan Hilwan
Jurnal Agrotek Lestari Vol 8, No 1 (2022): April
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jal.v8i1.5377

Abstract

Carbon stocks indicates the amount of CO2 that is absorbed and stored in plant biomass coffee, shade trees, undergrowth and litter. Objective research is to analyze the species composition and structure of vegetation and determine the amount of biomass, carbon stocks and CO2 uptake aboveground part in both types of coffee agroforestry with non-destructive methods, using allometric equation, in Central Aceh district. The location of the plot was determined by purposive sampling based on the representation of stands. The dominant value of a species in plants is calculated using the important value index (INP). The composition of agroforestry constituents consisted of 34 species, of which 15 species were found in simple agroforestry and 19 species in complex agroforestry. The horizontal structure of agroforestry consists of 5 diameter classes, with vegetation density decreasing continuously in the number of individuals. Carbon stocks agoforestri types of coffee in a simple decrease with an increase in diameter <10 cm and 10-19.99 cm and the complex agroforestry increases. The highest non-coffee carbon reserves are found at growth rates of 10-19.99 cm in simple agroforestry. The total component of the amount of biomass in simple agroforestry (159. 56 tons ha-1) is greater than the agroforestry complex (142.00 tons ha-1). Total CO2 uptake in both types of agroforestry was (520.16 tonsCO2 ha-1). Total CO2 uptake in simple agroforestry (275.22 tonsCO2 ha-1) was greater than in complex agroforestry (244.94 tonCO2 ha-1).Keywords: arabica coffee, agroforestry, carbon stocks and composition of vegetation
Arrangement of Identification Key for Seedling on Genus Shorea Roxb. ex Gaertner f Iwan Hilwan; Dhafin Maulidiyan
Jurnal Silvikultur Tropika Vol 13 No 02 (2022): Jurnal Silvikutur Tropika
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.13.02.155-161

Abstract

Tingginya keanekaragaman jenis pohon menjadikan manusia sejak lama memanfaatkan sumberdaya hutan tersebut baik untuk keperluan pangan, sandang, maupun papan. Untuk memudahkan kegiatan pemanfaatan tumbuhan, perlu adanya pengetahuan mengenai pengenalan identitas jenis pohon. Jenis-jenis pohon andalan Indonesia salah satunya berasal dari suku Dipterocarpaceae, yaitu kayu meranti dari marga Shorea. Pengelolaan kawasan hutan penghasil kayu meranti perlu dilakukan agar produktivitas kayu tetap terjaga, salah satunya melalui pengelolaan regenerasi alaminya. Identifikasi jenis dalam tingkat anakan menjadi sangat penting agar tidak terjadi kesalahan pemeliharaan jenis yang tidak diinginkan. Penelitian dilakukan dengan mencatat data morfologi dari 43 jenis Shorea spp. pada fase semai dan pancang yang sudah teridentifikasi hingga nama spesiesnya. Penelitian dilaksanakan mulai bulan Januari hingga April 2019 di Persemaian Kantor Pusat Penelitian dan Pengembangan Hutan, Kota Bogor. Selanjutnya data diolah sehingga dihasilkan kunci identifikasi marga Shorea. Ciri morfologi khusus dari anakan marga Shorea yaitu memiliki pertulangan tersier daun tangga (scalariform veination), ditemukannya kelenjar (gland) yang menyebar pada lamina, terdapat stipule atau daun penumpu, dan mayoritas bentuk petiole yang membengkak (swollen) dan melutut (geniculate). Kata kunci: anakan, Dipterocarpaceae, kunci identifikasi, morfologi, Shorea
Ecobiology Test of Mantangan Species (Merremia peltata (L.) Merr.) from the Bukit Barisan Selatan National Park, Lampung Kurniawati - Kurniawati; Muhadiono Muhadiono; Iwan Hilwan
Journal of Tropical Life Science Vol. 9 No. 2 (2019)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Mantangan (Merremia peltata (L.) Merr.) is a woody liana. Nowadays, it has become invasive in Bukit Barisan Selatan National Park. The objectives of this research were to analyze: 1) effect of light intensity on the growth of mantangan in natural and artificial shade, 2) effect of sand addition to the soil media and trimming on the growth rate of mantangan. Forest profile was made at the field in three locations with three light intensity levels: low, moderate, and high. A completely randomized design by three factors: shade, soil media and trimming were used. Parameters measured were stem length, leaf and buds number, fresh and dry weight. Forest profile analysis showed that high light intensity forest was dominated bay mantangan. In contrast, growth of mantangan was inhibited in low light intensity (75% shade), with lower dry weight (1.50 g). Soil media and trimming did not affect significantly on growth of mantangan.
Ethnobotanical Study of Plants Used by People in Hiang Indigenous Forest Kerinci, Jambi Evan Vria Andesmora; Muhadiono Muhadiono; Iwan Hilwan
Journal of Tropical Life Science Vol. 7 No. 2 (2017)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.07.02.02

Abstract

Indonesia is a high-abundance tropical forests country. It plays a very important role for world life because of its species richness than others. One of the forest resources in Indonesia is indigenous forests. Indonesia is rich of local wisdom such as that possessed by indigenous peoples. Indigenous peoples have a potential of the biological resources conservation. As a sustainable management tradition, communities around indigenous forest also have the efforts to preserve the forest.  The data collection of community knowledge about plants was conducted by interviews and direct-field observation. Data were analyzed using index of cultural significance. The results showed that there are 48 species of plants utilized by communities in Hiang Indigenous Forest, 27 species are used as firewoods, 15 species as building materials, 7 species as medicinal plants, 6 species as traditional handicraft ingredients and 4 species as secondary foods and traditional ritual materials. Most of widely-used plants by the community are Altingia excels, and Styrax benzoin is used as incense in a traditional ritual.
Litter Decomposition Rate of Karst Ecosystem at Gunung Cibodas, Ciampea Bogor Indonesia Sethyo Vieni Sari; Ibnul Qayim; Iwan Hilwan
Journal of Tropical Life Science Vol. 6 No. 2 (2016)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.06.02.08

Abstract

The study aims to know the productivity of litter and litter decomposition rate in karst ecosystem. This study was conducted on three altitude of 200 meter above sea level (masl), 250 masl and 300 masl in karst ecosystem at Gunung Cibodas, Ciampea, Bogor. Litter productivity measurement performed using litter-trap method and litter-bag method was used to know the rate of decomposition. Litter productivity measurement results showed that the highest total of litter productivity measurement results was on altitude of 200 masl (90.452 tons/ha/year) and the lowest was on altitude of 300 masl (25.440 tons/ha/year). The litter productivity of leaves (81.425 ton/ha/year) showed the highest result than twigs (16.839 ton/ha/year), as well as flowers and fruits (27.839 ton/ha/year). The rate of decomposition was influenced by rainfall. The decomposition rate and the decrease of litter dry weight on altitude of 250 masl was faster than on the altitude of 200 masl and 300 masl. The dry weight was positively correlated to the rate of decomposition. The lower of dry weight would affect the rate of decomposition become slower. The average of litter C/N ratio were ranged from 28.024%--28.716% and categorized as moderate (>25). The finding indicate that the rate of decomposition in karst ecosystem at Gunung Cibodas was slow and based on C/N ratio of litter showed the mineralization process was also slow.
Estimation of Seed Production and Germination of Ficus hispida and Ficus racemosa Ghvirly Ramadhani; Noor Farikhah Haneda; Iwan Hilwan
Jurnal Sylva Lestari Vol. 10 No. 3 (2022): September
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v10i3.579

Abstract

Ficus hispida and Ficus racemosa are Moraceae species that commonly grow on riverbanks. Actions to propagate generative plants required more observation due to mutualistic symbiosis between F. hispida and F. racemosa with Ceratosolen solmsi and Ceratosolen fusciceps as pollinating insects. This study aimed to obtain data on seed production, germination, and the interaction of F. hispida and F. racemosa with pollinating insects. Research activities included seed extraction, seed germination testing, and calculation of the number of pollinating insects found in syconia. The results showed that the number of entered insects was related to syconia's receptive phase and diameter. F. hispida produced 3679 seedlings, while F. racemosa produced 2086 seedlings in one period. The number of seeds could cover a 6 ha area with a 4 m x 4 m spacing of planting. The germination percentage of F. hispida and F. racemosa was low to moderate. F. hispida seed germination was only 57.2% and F. racemosa was 68.6%. Thus, the seed should be germinated immediately after extraction. Keywords: Ficus hispida, Ficus racemosa, germination, seed production
Determination of Optimal Sample Plot Dimension for Measuring Species Diversity of Plants in Beach Forest Ecosystem Siddiq Nurkholis; Yanto Santosa; Iwan Hilwan
Jurnal Ilmu Kehutanan Vol 17 No 1 (2023): March
Publisher : Faculty of Forestry Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jik.v17i1.5316

Abstract

Biodiversity measurement served as baseline data for the development of effective conservation plans. The accuracy of the measurement was highly dependent on the size of the sample plot. Even though Indonesia had various ecosystems, the standard sample plot size for measuring plant species diversity was only available for lowland, lower montane, and mangrove forests. Therefore, this study aimed to determine the optimal dimension of plots for measuring plant species diversity in coastal forest ecosystems. The data was collected in Ujung Kulon National Park using various dimensions of sample plots ranging from 2 m × 2 m to 150 m × 50 m. Furthermore, the rarefaction method and species-area curve were used to examine the data. The curves showed that the optimal sample plot dimensions for seedling, sampling, and pole levels were 110 m × 50 m and 150 m × 50 m for tree stages.
Determination shape and size optimal plot example of measurement for plant species diversity in Mountain Forest Iwan Hilwan; Yanto Santosa; Siti Nahla
Jurnal Silvikultur Tropika Vol 14 No 01 (2023): Jurnal Silvikutur Tropika
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.14.01.64-70

Abstract

Information of vegetation structure and composition of terrestrial flora biodiversity can be measured by vegetation analysis method. The method requires sampling plots as a measurement plot capable to describe species in a forest stand. The distribution of a species of diversity, especially plants, is relatively dependent on the type of plant with the condition of the area it occupies. Therefore, an efficient and representative method is needed for the ecosystem in measuring. The objective of the study was to determine the optimal shape and size of sample plots for measuring plant species diversity at stake in TNGHS as well as to assess the most responsive diversity index. The results showed that the shape and size of the optimal sample plot for measuring plant species diversity at stake in TNGHS was a rectangular plot measuring 3.200 m2. The result of the index processing of diversity, it was found that the Margalef Index gave a more responsive diversity value to the change of species number compared with Menhinick, Simpson and ShannonWiener indices. Key words: composition, diversity index, margalef, structure, terrestrial flora.
Co-Authors Ade Siti Nurjannah Aldi Perdana Wiraatmadja Andesmora, Evan Vria Andry Indrawan Anggoro, Prima Anggraeni Antika, Tiara Ardiyansyah Purnama Arin Annisa Fathia Assajad, Zacky Nurrohman Azzahra, Nabilah Putri Fatimah Basuki Wasis Cahyo Wibowo Citra Rahmatia Dadan Mulyana Dhafin Maulidiyan Dian Ariyanti Dimas Prasaja, Dimas Dina Oktavia Dwi Mairida Eddy Nurtjahya Efita Karunia Harita Eko Putranti Handayani Erfanda Irawan Ewi Irfani Faadhila, Intan Hanifa Ghvirly Ramadhani Hariadi Saputra Haryantini, Baiq Azizah Hendriyana Rachman Henti Hendalastuti Rachmat IBNUL QAYIM Idealisa Masyrafina Ihsan Noor Irdika Mansur Istomo . Jenny Rumondang Johan Ariando Rajagukguk Kurniawati - Kurniawati Kurniawati, Kurniawati - Laijanan, Theresia Avilla Madja, Muhammad Daffa Nurhadi Suryadi MARIA BINTANG Maulidil Fajri Meida Rosani Muhadiono Muhadiono Muhadiono Muhadiono Muhadiono Muhadiono Muhadiono Muhadiono Muhadiono Muhadiono, Muhadiono Mulyanto, Naufal Rafa Noor Faiqoh Mardatin Noor Farikhah Haneda Nur Mufarhatun Nurheni Wijayanto Nuroh Bawaihaty Rana Rio Andhika, Rana Rio Ria Astuti Rifaldo, Akhmad Sabila, Siska Aisyah Sethyo Vieni Sari Siahaan, Lasriama Siddiq Nurkholis Siti Nahla Supriyanto Teddy Rusolono Utami, Desty Sasana Putri Weda Gelar Pananjung Yadi Setiadi Yadi Setiadi YANTO SANTOSA Yentiana, Retno Ayu Yuda Purnama Yudi Setiawan Yustika Fadilah Siregar Zahrani, Alifia Sasky