Abstract. Yulita KS, Atikah TD, Wardani W, Susila. 2020. Unraveling genetic variations of Dalbergia latifolia (Fabaceae) from Yogyakarta and Lombok Island, Indonesia. Biodiversitas 21: 833-841. Dalbergia latifolia Roxb. (Fabaceae) or sonokeling is a timber species extracted for its beautiful heartwood used mainly for musical instruments. D. latifolia was listed in Appendix 2 of CITES since 1997, and the demand for its timber is increasing. The species is considered vulnerable (VU A1cd ver 2.3) to extinction according to the IUCN Red List, while cultivations were mainly done from a root cutting. To anticipate the further loss of population size while maintaining sustainable use of the species, it is essential to evaluate the genetic diversity since the genetic diversity level could serve as an indicator of plant adaptability to its environment. This present study was the first to report the genetic diversity of five populations of D. latifolia from Yogyakarta and Lombok Island, West Nusa Tenggara, Indonesia. Ten combinations of Sequence Random Amplified Polymorphism (SRAP) primers were used to amplify 48 samples of D. latifolia from five populations in Yogyakarta and Lombok Island. The 137 SRAP loci were used for a cluster, and population genetic analysis, with mean NPL, was of 13.6/locus, PLP of 56.18%, H of 0.16, and PIC for all population was of 0.28. The lowest gene diversity (H = 0.11) was observed in population WL 1 of Lombok Island, while the highest (H = 0.20) was recorded for population KP of Yogyakarta. The Yogyakarta and Lombok populations were genetically structured at a medium level (Gst = 0.27), with low genetic distance (0.0310-0.1281), and a moderate level of variation observed among individual trees (ca. 0.5 coefficient similarity). The results of this present study were expected to provide necessary information on further research of D. latifolia from Indonesia to support the sustainable use of D. latifolia in Indonesia and the preservation of this species.

Study on production potential of adventitious root of the scaly tree fern Cyathea contaminans was conducted in six locations in West Java and North Sumatra using 20 m x 50 m sampling plot. Data recorded in the study consisted of population density, individual heights and diameter, volume of adventitious roots and environmental factors. The highest population density was found in a population that consisted of saplings with the height of less than 2 m tall. While population with adult plants has the density of 26–36 individual/100 m2. The wighest average volume of adventitious root per individuals was found in a population that dominated by adult stands and lies on a gentle slope at 108,760.70 cm3/individuals, while the lowest was in a population that consisted of saplings. The result statistical analysis showed that production of adventitious root were significantly different in different habitat. Moreover, there was positive correlation between trunk diameter and individual height with the volume of adventitious root, and between the diameter with individual height.

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Abstract. Robiansyah I, Wardani W. 2020. Increasing accuracy: The advantage of using open access species occurrence database in the Red List assessment. Biodiversitas 21: 3658-3664. IUCN Red List is the most widely used instrument to assess and advise the extinction risk of a species. One of the criteria used in IUCN Red List is geographical range of the species assessed (criterion B) in the form of extent of occurrence (EOO) and/or area of occupancy (AOO). While this criterion is presumed to be the easiest to be completed as it is based mainly on species occurrence data, there are some assessments that failed to maximize freely available databases. Here, we reassessed the conservation status of Cibotium arachnoideum, a tree fern distributed in Sumatra and Borneo. This species was previously assessed by Praptosuwiryo (2020, Biodiversitas 21 (4): 1379-1384) which classified the species as Endangered (EN) under criteria B2ab(i,ii,iii); C2a(ii). Using additional data from herbarium specimens recorded in the Global Biodiversity Information Facility (GBIF) website and from peer-reviewed scientific papers, in the present paper we show that C. arachnoideum has a larger extent of occurrence (EOO) and area of occupancy (AOO), more locations and different conservation status compared to those in Praptosuwiryo (2020). Our results are supported by the predicted suitable habitat map of C. arachnoideum produced by MaxEnt modelling method. Based on our assessment, we propose the category of Vulnerable (VU) C2a(i) as the global conservation status for C. arachnoideum. Our study implies the advantage of using open access databases to increase the accuracy of extinction risk assessment under the IUCN Red List criteria in regions like Indonesia, where adequate taxonomical information is not always readily available.

Penelitian ini bertujuan untuk mengetahui jenis-jenis tumbuhan paku (Pteridophyta) di Kawasan Air Terjun Gunung Mambulilling Kabupaten Mamasa Sulawesi Barat. Penelitian dilaksanakan pada bulan Juni - November 2020. Penelitian ini menggunakan metode survei dengan teknik pengambilan sampel secara penelusuran (tracking) langsung di Kawasan Air Terjun Gunung Mambulilling. Identifikasi sampel dilakukan di LIPI (Lembaga Ilmu Pengetahuan Indonesia). Dari hasil penelitian yang telah dilakukan didapatkan jenis tumbuhan paku sebanyak 29 jenis yaitu Asplenium phyllitidis Don., Asplenium caudatum Forst,Diplazium bantamense Bl., Diplazium esculentum Sw.,Cyathea contaminan (Wall.)Copel., Ariostegia hymenophylloides (Bl.) Copel., Histiopteris incisa (Thumb.) J.sm., Hypolepis tenuifolia Bernh., Dipteris conjugata Reinw., Polystichum aculeatum Schott., Dicranopteris linearis (Burm.) Und., Lycopodium cernuum L.Angiopteris evecta Hoffm., Nephrolepis cordifolia Pr., Nephrolepis biserrata (Sw.) Schott., Oleandra neriiformis Cav.,Goniophlebium parsicifolium (Desv.) Bedd., Microsorium scolopendria (Burm.f.) Copel., Pyrrosia adnescens Desv., Paragramma longifolia (Bl.) Moore., Selliguea caudiformis (Bl.) J.Sm, Plagiogyria adnata (Bl.) Bedd., Psilotum nudum (L.) Griseb., Pteris longipes D.Don., Selaginella aristata Spring., Selaginella opaca Warb., Christella arida (Don) Ching; Antrophyum latifolium Bl., yang tergolong ke dalam 18 famili.