Rediscovery of the supposedly extinct Dipterocarpus cinereus

Penulis: Peter S. Ashton
Trees of the family Dipterocarpaceae are valued for their timber and resin. In Sumatra the family is represented by eight genera and c. 109 species and six subspecies, of which at least 11 species are endemic. One of these endemics, Dipterocarpus cinereus Sloot., was categorized as Extinct on the IUCN Red List in 1998. According to Ashton (Dipterocarpaceae. Flora Malesiana, Series I, 92, 237552) this species is only known from the c. 8,000 ha Mursala (= Morsala, Moesala or Mansalaar) Island in the District of Tapanuli Tengah in North Sumatra Province. It was first collected in 1916 by A.V. Theunissen and described by Dirk Fok van Slooten under the name Dipterocarpus cinerea in 1927. In 1982 Peter Ashton asserted its name to be Dipterocarpus cinereus Sloot. With the support of the Government of Indonesia through the Bogor Botanical Gardens, the Indonesian Institute of Sciences carried out an expedition during MarchApril 2013 to survey for a possible remnant population of D. cinereus on Mursala island. After more than 2 weeks the team found several trees of D. cinereus in at least two localities. However, we found a total of <10 three (note : we confirmed three (3) mature trees) individuals , and no few assumed seedlings. According to local people D. cinereus is a species targeted for its timber, along with other dipterocarp species such as Dryobalanops aromatica, Shorea spp. and Dipterocarpus caudatus ssp. penangianus. The Bogor Botanical Gardens is now carrying out further studies on the genetic variability of D. cinereus and other dipterocarp species found in the island. With the collaboration of the local people we are also planning to collect the fruits of D. cinereus, for propagation and future restoration of the species in the wild. In addition, improved protection of sanctuaries such as Mursala Island is urgently required. [Does Musala Island have any legal protected status Yes, it does, as a nature reserve managed by local government, we means by improved is the management authority taken over by the central government through Ministry of Forestry)

The International Jounal of Conservation, Oryx / Volume 47 / Issue 03 / July 2013, pp 324-324

DOI: 10.1017/S0030605313000756

No. Arsip : LIPI-20220329
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