High Species Diversity of the Family Dipterocarpaceae in Mursala Island, Indonesia

Iyan Robiansyah, Arief Hamidi, Agusti Randi


Known to have a long history of timber extraction, Mursala Island on the west coast of North Sumatra Province is a small island home to the endemic tree Dipterocarpus cinereus and many other Dipterocarpaceae species. In the present study, distance sampling using line-transect was used to assess the species diversity and population status of Dipterocarpaceae species on the Island. A total of 26 Dipterocarpaceae species from 6 genera was identified from Mursala Island. The genus that was represented by the highest number of species was Shorea (13 species), followed by Vatica (5), Dipterocarpus (4), Hopea (2), Cotylelobium (1) and Dryobalanops (1). Among these, two Mursala Island endemic were identified: D. cinereus and H. bancana. Furthermore, according to IUCN Red List category, 11 species (42.3%) were classified as critically endangered, four species (15.4%) were of endangered, 5 species (15.2%) were of vulnerable, one species was of near threatened, 2 species were of least concern and 3 species were not assessed yet. Based on distance analysis, the species with the highest individual density was S. multiflora (21.72±10.96 individual/ha), whereas species with the lowest density was S. johorensis (0.06±0.01 individual/ha). Two main threats for Dipterocarpaceae species in Mursala Island were observed during the survey: illegal logging and habitat conversion. Increasing the protection level of the island was recommended to conserve all the species of Dipterocarpaceae. Besides, providing alternative sources of living for the illegal logger through commercialization of non-timber forest products, ecotourism, and the sustainable fishery was recommended so that they could stop illegal logging activity.


Dipterocarpaceae; Dipterocarpus cinereus; distance sampling; endemic tree; Hopea bancana; Mursala Island.

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Purwaningsih, “Sebaran ekologi jenis-jenis Dipterocarpaceae di Indonesia†Biodiversitas, vol. 5, pp. 89-95, Jul. 2014.

G. Maury-Lechon and L. Curtet, “Biogeography and evolutionary systematics of Dipterocarpaceae†in Review of Dipterocarps: Taxonomy, ecology and silviculture, S. Appanah and J.M. Turnbull, Eds. Bogor, Indonesia: A Center for International Forestry Research, 1998.

R. Hegnauer. (2020) Dipterocarpaceae. [Online]. Available: http://portal.cybertaxonomy.org/flora-malesiana/node/4361

IUCN. (2019) The IUCN Red List of Threatened Species. Version 2019-1. [Online]. Available: http://www.iucnredlist.org

P. Ashton. (1998) Dipterocarpus cinereus. The IUCN Red List of Threatened Species 1998: e.T33374A9773444. [Online]. Available: http://dx.doi.org/10.2305/IUCN.UK.1998.RLTS.T33374A9773444.en.

Y. W.C. Kusuma, Wihermanto, and R. A. Risna, “Rediscovery of the supposedly extinct Dipterocarpus cinereus†Oryx, vol. 47, pp. 324, Jul. 2013.

H.H. Rachmat and A. Subiakto, “Conserving the previously reported extinct tree species Dipterocarpus cinereus: An ex-situ approach for the species conservation strategy†in Prosiding Seminar Nasional Masyarakat Biodiversitas Indonesia, 2015, pp. 560-564.

H. H. Rachmat, A. Subiakto, K. Wijaya, and A. Susilowati, “Alarming call from Mursala Island, North Sumatra, Indonesia: The urgent task of conserving the previously reported extinct of Dipterocarpus cinereus†Biodiversitas, vol. 19, pp. 399-405, Mar. 2018.

BPS Kabupaten Tapanuli Tengah, Kabupaten Tapanuli Tengah Dalam Angka 2017. Tapanuli Tengah, Indonesia: BPS Kabupaten Tapanuli Tengah, 2017.

Thomas, S. T. Buckland, E. A. Rexstad, J. L. Laake, S. Strindberg, S. L. Hedley, J. R. B. Bishop, T.A. Marques, and K. P. Burnham, “Distance software: Design and analysis of distance sampling surveys for estimating population size†Journal of Applied Ecology, vol. 47, pp. 5-14, Feb. 2010.

H. Akaike “Information Theory and an Extension of the Maximum Likelihood Principle†in International Symposium on Information Theory 2nd Edition, B. N. Petran and F. Csaaki, Eds. Budapest, Hungary: Akadèemiai Kiadi, 1973.

K.P. Burnham and D. R. Anderson, Model Selection and Multi-Model Inference: a Practical Information-Theoretic Approach. New York, USA: Springer-Verlag, 2002.

TFCA-Sumatera. (2016) TN Siberut dan Kep Mentawai. [Online]. Available: http://tfcasumatera.org/tn-siberut-dan-kep-mentawai/

I. Maryanto, A. Hamidy, A. P. Keim, V. B. L. Sihotang, P. Lupiyaningdyah, M. Irham and M. Ardiyani, Ekspedisi Pulau Enggano. Jakarta, Indonesia: LIPI Press, 2017.

A. Subiakto and H. H. Rachmat, “Exploration, Collection, and Conservation of Dipterocarps in Riau Islands†in Prosiding Seminar Nasional Masyarakat Biodiversitas Indonesia, 2015, pp. 428-433.

V. Mainga, W. Musila, J. Kimeu, C. Chesire and J. Kariuki. (2012) Kibauni Hill Forest Plant Assessment: Floristic Composition, Structure and Conservation Status. Final Report of the Rufford small grants for Nature. [Online]. Available: https://www.rufford.org/files/9825-1%20Detailed%20Final%20Report.pdf

K. Majumdar and B. K. Datta, “Effects of Anthropogenic Disturbances on Vegetation Diversity and Structure: a Case Study in the Remnant Forests Surrounding the Village Ecosystems of Tripura, Northeast India†Chinese Journal of Population Resources and Environment, vol. 13, pp. 332-340, Aug. 2015.

T. C. Khai, N. Mizoue, T. Kajisa, T. Ota, and S. Yoshida, “Stand structure, composition and illegal logging in selectively logged production forests of Myanmar: Comparison of two compartments subject to different cutting frequency†Global ecology and conservation, vol. 7, pp. 132-140, Jul. 2016.

R. M. Byamungu, S. B. Mariki and N. P. Mkiramweni, “Tree stock, structure and use of common woody species of a town neighboring forest reserve in Tanzania: Implication for managing carbon accumulation†in Forest Biomass and Carbon, 2018, G. Shukla and S. Chakravarty, Eds. London, UK: IntechOpen.

M. Mirzaei and A. E. Bonyad, “Comparison of fixed area and distance sampling methods in open forests: Case study of Zagros forest, Iran†Journal of forestry research, vol. 27, pp. 1121-1126, Apr. 2016.

P. Ashton. (1998) Hopea bancana. The IUCN Red List of Threatened Species 1998: e.T33382A9774710. [Online]. Available: http://dx.doi.org/10.2305/IUCN.UK.1998.RLTS.T33382A9774710.en.

DOI: http://dx.doi.org/10.18517/ijaseit.10.6.11349


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