Relevant bibliographies by topics / Alstonia sp

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Academic literature on the topic 'Alstonia sp'

Author: Grafiati
Published: 4 June 2021
Last updated: 17 February 2022

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Journal articles on the topic "Alstonia sp"

1

Sumarni, Sumarni, St Fatmah Hiola, and Hilda Karim. "Inventarisasi Jenis Pohon Inang Anggrek Epifit di Desa Tompobulu Resort Balocci Taman Nasional Bantimurung Bulusaraung Kabupaten Pangkep Provinsi Sulawesi Selatan." bionature 20, no. 2 (2019): 96. http://dx.doi.org/10.35580/bionature.v20i2.11279.

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Abstract. Balocci Resort Banntimurung Bulusaraung National Park is a location that is overgrown with many natural orchids. This research is a descriptive study that aims to determine the type of epiphytic orchid host tree and the distribution of host trees at the Balocci Resort in Bantimurung Bulusearaung National Park. The method used is a survey method. The stages of the research are termining location and observations, collecting data and indetifying spesies. Based on the result; Alstonia scholaris, Sauarauia malayana, Mangifera sp, Tabernaemontana sphaerocarpa, Arenga pinnata, Syzygium sp, Elaecarpus angustifolius, Bischofia javanica, Maesea sp, Erythrina subumbrans, Lithocarpus celebicus, Cryptocarya sp, Elmerillia ovalis, Memecylon paniculatum, Ficus benjamina L, Ficus variegate, Ficus fistulosa, Knema laurina, Litsea sp, Uncaria longiflora, Coffea sp, Melicope sp, Planchonella firma, Palaquium lobbianum, and Laportea stimulant which belongs to 19 families. The tree that is overgrows with orchids is Alstonia scholaris, Sauarauia malayana and Ficus benjamina L. the host tree which is used as a place for growth has uneven surface characteristics of the tree, overgrown with nails and generally mossy. Host tree species that have a wide spread on mount Bulusaraung is Sauarauia malayana which is at an altitude of 700-1300 m above sea level. Keywords: host tree, epiphytic, resort balocci, bantimurung bulusaraung national park area
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THOMY, ZAIRIN, ARDHANA YULISMA, ESSY HARNELLY, and ARIDA SUSILOWATI. "Molecular phylogeny of trees species in Tripa Peat Swamp Forest, Aceh, Indonesia inferred by 5.8S nuclear gen." Biodiversitas Journal of Biological Diversity 19, no. 4 (2018): 1186–93. http://dx.doi.org/10.13057/biodiv/d190402.

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Authors. 2018. Molecular phylogeny of trees species in Tripa Peat Swamp Forest, Aceh, Indonesia inferred by 5.8S nucleargen. Biodiversitas 19: 1186-1193. Tripa peat swamp forest is protected areas that have high biodiversity. Nevertheless, in some areas,the damage occurred due to conversions of land function to oil palm plantations. The impact of conversions of peat swamp forest to oilpalm plantations has led to biodiversity decreased. Hence, it is important to identify the remain tree species in Tripa peat swamp forest.This study aimed to determine of trees species diversity in Tripa peat swamp forest by using of 5.8S rRNA nuclear gene. Research wasconducted at Forest Genetics and Molecular Forestry Laboratory, Faculty of Forestry, IPB from September 2015 to August 2016.Molecular identification consisted of DNA extraction, PCR analysis, and sequencing. The data were analyzed using Bioedit, MEGA 6,BLAST, and ITS2 database. Molecular identification using ITS 1 and ITS 4 primer successfully amplified (the ITS region ITS1-5.8SITS2)of 16 trees species from 9 families. BLAST analysis results indicate the presence of 16 species has similar bases sequence withthe GeneBank DNA database. The plant species are Branckenridgea palustris (Ochnaceae), Gonystylus sp. (Thymelaeaceae),Tristaniopsis whiteana (Myrtaceae), Syzygium sp.1 (Myrtaceae), Macaranga triloba (Euphorbiaceae), Syzygium garciniifolium(Myrtaceae), Knema intermedia (Myristicaceae), Palaquium ridleyi (Sapotaceae), Palaquium sp. (Sapotaceae), Dyera lowii(Apocynaceae), Elaeocarpus petiolatus (Elaeocarpaceae), Ficus sp. (Moraceae), Syzygium leptostemon (Myrtaceae), Chilocarpussuaveolens (Apocynaceae), Alstonia pneumatophora (Apocynaceae), and Alstonia sp. (Apocynaceae). Phylogeny tree reconstructionusing the Neighbor-Joining Method (NJ) showed that 5.8S rRNA nuclear gene was successful as marker for 16 trees species from 9different families. In addition, the 5.8S also successful for resolving phylogenetic relationships at genus level i.e. Alstonia, Palaquium,Syzygium, Tristaniopsis, Macaranga, Elaeocarpus, and Ficus.
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3

Andianto, Andianto. "PERBANDINGAN CIRI ANATOMI KAYU DAN KULIT 3 JENIS PULAI (Alstonia sp.)." Jurnal Penelitian Hasil Hutan 29, no. 4 (2011): 356–68. http://dx.doi.org/10.20886/jphh.2011.29.4.356-368.

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4

Zuraida. "Phytocemical compounds of different species of Alstonia sp. from Palembang- South Sumatera." IOP Conference Series: Earth and Environmental Science 308 (September 4, 2019): 012027. http://dx.doi.org/10.1088/1755-1315/308/1/012027.

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5

INAREN MARKUS HUBY, JIMMY F. WANMA, and MARIANA H. PEDAY. "POLA ORDINANSI KOMUNITAS POHON DI HUTAN SEKUNDER DISTRIK MANOKWARI UTARA KABUPATEN MANOKWARI." JURNAL KEHUTANAN PAPUASIA 6, no. 1 (2020): 21–36. http://dx.doi.org/10.46703/jurnalpapuasia.vol6.iss1.195.

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This study aimed to reveal indicator plant species in the secondary forest by applying a descriptive approach and field observation as well as refer to releve method. Tral vegetation data of vascular plant at seedlings, saplings, poles, and tree stages that analyzed using MVA.4 (TWINSPAN) software. The analyzed result indicated 12 groups of associations and 1 group of solitary association in which the species were categorized as dominant. The most often appear species in 12 association group based on their growing shapes were Actinodaphne nitida, Celtis latifolia, Hemappasandra sp., Teijmaniodendron sp., Lea acuelata, Spatiostemon jevensis, Koordersiodendron pinnatum, Sisipus sp., Sterculia macrophylla, Litsea timoriana, Macaranga sp., Aglaia sp., Rhus taitensis, Alstonia scholaris, Archidendron parviflorum, Callophylum inophylum and Ficus sp. While the most dominant species in the solitary association were Chisocheton ceremicus, Cryptocarya sp., Canarium hirsutum, Euodia elleryana, Litsea ladermani, and Litsea timoriana. These species arranged and functioned as the dominant tree structure in the secondary forest along the north Manokwari area of Manokwari.
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6

Rotinsulu, Johanna M., Lies Indrayanti, and Sampang Sampang. "EFFECTS OF INUNDATION DEPTH ON GROWTH OF 14 PLANT SPECIES ON PEATLANDS IN PULANG PISAU REGENCY." TROPICAL WETLAND JOURNAL 2, no. 2 (2016): 1–9. http://dx.doi.org/10.20527/twj.v2i2.25.

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 Rehabilitation of degraded peat-swamp forests, especially in Central Kalimantan Province, is becoming increasingly important in order to restore the ecological functions and maintain the biodiversity and carbon pool. The problem facing the rehabilitation effort is the limited knowledge about the techniques of rehabilitation on peat swamp lands using local species because inundation frequently occurs in this area during rainy season which greatly affects the growth of the plants. The purpose of this study was to analyze the level of resistance of plants to inundation on peat swamp lands in Pulang Pisau Regency, Central Kalimantan Province. The experiment was conducted in Taruna Jaya village, Jabiren subdistrict. Pulang Pisau Regency, using 14 different plant species endemic to peat swamp forests, with two factors, namely the level of immersion/inundation and plant species. In order to find out the plant resistance to inundation and the root growth, some variables were measured, such as the survival percentage of plants after tested in inundation and planted in the field, the assessment of the tree health using the criteria of Forest Health Monitoring (FHM), and the root-shoot ratio (RSR). The results showed that of the 14 species tested, Belangeran (Shorea balangera Korth) and Bintangur (Calophylum sp.) had good resistance to the condition of inundated soil, high adaptability in the field, and high value of RSR (root- shoot ratio). The plant species with high efficiency in absorbing nutrients and water were Shorea balangeran Korth, Calophyllum sp., Dyera polyphylla, and Alstonia pneumatophora. Those with the very high value of tree health were Alstonia pneumatophora, Calophyllum sp., D. pseudomalabarica, Dyera polyphylla, Shorea balangeran Korth, Trisraniopsis sp. and Stemonurus secondflorus.
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NIKSON REZALL BIETH and AGUSTINA Y.S. AROBAYA. "EKSPLORASI DAN INDENTIFIKASI JENIS-JENIS ANGGREK DI KAWASAN HUTAN PULAU MANSINAM KABUPATEN MANOKWARI." JURNAL KEHUTANAN PAPUASIA 6, no. 1 (2020): 106–12. http://dx.doi.org/10.46703/jurnalpapuasia.vol6.iss1.202.

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This study was focusing on identifying types of epiphytic orchid species through field survey by establishing plots and tracks for observation. The main parameter in the study was morphological characteristic of epiphytic orchid that covers shape, root, stem, leaf, fruit, and flower as well as its growing habitat. From the result standpoint, 6 epiphytic orchid species were identified that consisted of Dendrobium bifalce Lindl, Dendrobium mirbelianum Gaudich, Dendrobium schulleri J.J.Sm, Grammatophylum scriptum (Lindl.) Blume, Grammatophylum speciosum Blume, and Pomatocalpa sp aff Marsupial. In addition to their hosted plant, the result found several species of plant such as Mangifera indica, Alstonia scholaris, Baringtonia asicatica, Pometia sp, and Terminalia catappa which their growth was mostly sticking to the main stem and branch.
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8

Barly, Barly. "PENGAWETAN WARNA KAYU TUSAM (Pinus merkusii) DAN PULAI (Alstonia sp.) DENGAN MENGGUNAKAN BAHAN DASAR DISINFEKTAN." Jurnal Penelitian Hasil Hutan 30, no. 2 (2012): 155–62. http://dx.doi.org/10.20886/jphh.2012.30.2.155-162.

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9

Esofita, Mufti, Mitra Djamal, Warsito P. Taruno, et al. "Analysis of Wood’s Capacitance Characteristic to its Hardness." Applied Mechanics and Materials 771 (July 2015): 161–64. http://dx.doi.org/10.4028/www.scientific.net/amm.771.161.

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A capacitance sensor has been designed to investigate the correlation between wood capacitance value, Janka hardness rating and density. The sensor was developed based on parallel plates using copper as the electrodes. Capacitance values were measured using CV-circuit, 20 Vp-p, 2.5 MHz. Five wood specimens from forest plantation that is Karet (Hevea brasiliensis), Pulai (Alstonia sp.), Pinus (Pinus mercusii), Sengon (Paraserianthes falcataria), and fast growing teak (Tectona grandis) were tested. Each specimen was measured in tangential and radial directions under 0% moisture content conditions. The designed sensor was capable to distinguish the capacitance values in tangential and radial directions. The measurement results showed that wood capacitance value has a good relation with wood’s hardness and density.
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10

Thomas, Vinoth, and Yash Dave. "Significance of follicle anatomy of Apocynaceae." Acta Societatis Botanicorum Poloniae 63, no. 1 (2014): 9–20. http://dx.doi.org/10.5586/asbp.1994.002.

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The pericarp structure of <i>Aganosma</i>, <i>Alstonia</i>, <i>Catharanthus</i> sp., <i>Holarrhena</i>, <i>Ichnocarpus</i>, <i>Parsonsia</i>, <i>Strophanthus</i>, <i>Vallaris</i> and <i>Wrightia</i> sp. distinguished into epicarp, mesocarp and endocarp has been used to put forward their taxonomic and phylogenetic importance. Epicarp is single layered in <i>Catharanthus</i> sp., <i>Ichnocarpus</i>, <i>Parsonsia</i> and <i>Vinca</i>, while in the rest of the genera it is multilayered. Mesocarp is parenchymatous which embeds vasculature and non-articulated laticifers. Endocarp is multilayered and thick walled. Dehiscence of the follicle is marginicidal. A comparison table of follicular features of <i>Apocynaceae</i>, <i>Asclepiadaceae</i> and <i>Periplocaceae</i> is furnished and their features are discussed. A taxonomic key based on follicular fruit characteristic to indentify the genera and species is appended.
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