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LIANA ABUNDANCE DIVERSITY AND TREE INFESTATION IN THE IMBAK CANYON CONSERVATION AREA SABAH MALAYSIA

Journal Article

Kammersheidt L; Berhaman A; Tay J; Abdullah G; Azwal M

2009

Journal of Tropical Forest Science

21

265-271

We investigated the liana diversity and liana—tree relationship in lowland dipterocarp forest at Imbak Canyon a recently designated conservation area in the heart of Sabah Malaysia and compared the results with similar studies in the region. In the two 0.1-ha plots a total of 23 liana species were found growing canopy-ward on trees = 10 cm diameter at breast height (dbh); dipterocarps were less infested by lianas than non-dipterocarps. The liana species belonged to 12 families and 16 genera. Fabaceae followed by Annonaceae and Icacinaceae were the most abundant and species-rich families. The floristic pattern and the stem density of lianas > 1 cm dbh were similar to other studies conducted in Sabah and northern Sarawak at comparable elevation and site conditions but were distinct from other sites in tropical Asia where Annonaceae is the prevalent climber family. The dominance of species of the genus Spatholobus (Fabaceae) may be a conspicuous feature of lowland dipterocarp forests in Sabah under mesotrophic conditions. Kami menyiasat kepelbagaian liana dan hubungan antara liana dengan pokok di hutan dipterokarpa tanah pamah di Lembah Imbak iaitu sebuah kawasan pemuliharaan di tengah-tengah Sabah Malaysia yang baru diwartakan. Keputusan yang diperoleh kemudiannya dibandingkan dengan kajian yang serupa di rantau ini. Dalam keduadua plot yang setiap satunya bersaiz 0.1 ha sebanyak 23 spesies liana didapati tumbuh ke arah kanopi pokok yang berdiameter aras dada (dbh) = 10 cm. Infestasi liana pada pokok dipterokarpa kurang daripada pokok bukan dipterokarpa. Spesies liana tergolong dalam 23 famili dan 16 genus. Fabaceae merupakan famili yang paling tinggi kelimpahan serta paling banyak spesiesnya diikuti oleh Annonaceae serta Icacinaceae. Corak flora dan ketumpatan batang liana > 1 cm dbh adalah serupa dengan keputusan kajian lain yang dijalankan pada ketinggian serta keadaan tapak yang lebih kurang sama di Sabah serta utara Sarawak. Namun nilainilai ini sangat berbeza jika dibandingkan dengan tapak lain di Asia tropika yang mempunyai Annonaceae sebagai famili pepanjat yang paling dominan. Kedominan spesies genus Spatholobus (Fabaceae) mungkin merupakan ciri jelas hutan dipterokarpa tanah pamah di Sabah dalam keadaan mesotrof.

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The Liana Ecology Project is supported by Marquette University and funded in part by the National Science Foundation.

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