Cluster analysis on floristic composition and forest structure of hilly lowland forest in Lok Kawi, Sabah State of Malaysia

Jumaat Adam, Abdul Manap Mahmud, Nurulhuda Edy Muslim, Hafiza A. Hamid, Masdahila Ahmad Jalaludin

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The purpose of this study was to carry out a vegetative study on the slope of Lok Kawi Hill. A total of 12 plots were laid between 20 to 350 m altitude on the slope of lowland hilly forest at Lok Kawi in Sabah State of Malaysia. These plots were subjected to cluster analysis using Ward Linkage Method (WLM) and Euclidean Distance Measurement (EDM). This similarity analysis classified them into five cluster groups (CGS). These CGS, denoted by three most dominant species in term of importance value were respectively named as Hevea brasiliensis-Parastemon urophyllum-Antidesma ghaesembilla Association (CGI); Chionanthus pachyphyllus-Parastemon urophyllum-Adinandra dumosa Association (CGII); Pithecellobium ellipticum-Calophyllum inophyllum-Arenga undulatifolia Association (CGIII); Calophyllum inophyllum-Croton oblongus-Cratoxylum arborescens Association (CG IV) and Oncosperma tigillarium-Sarcotheca glauca-Calophyllum inophyllum Association (CG V). The species diversity of these CGS were relatively poor. CGII and CGIII were each repres ented by 19 species, whereas CGIV, CGI and CGV comprised of 18, 10 and 6 species. In term of Basal Area Contribution (BAC), CGIII recorded the highest BAC, followed by CGII, CGIV, CGI and CGV. Density of trees between CGS was recorded highest in CGII, followed by CGIV, CGIII, CGI and CGV. Based on the species composition, CGI is an abandoned rubber plantation; CGII is a coastal vegetation with the presence of Oncosperma tigillarium; CGIII is a disturbed primary forest with the presence of Macranga hypoleuca, Macaranga gigantea and Mallotus paniculatus; CGIV is a disturbed primary forest with the presence of Vernonia arborea, Adinandra dumosa, Vitex pubescens and Macranga triloba; CGV is a disturbed primary forest with the presence of Macaranga gigantea. The value of species diversity differed between CGS. CGII have the highest R, H and E-values, 2.12, 2.393 and 0.813, followed by CGIII, CGIV, CGI and CGV. CGV possessed the lowest R, H and E-values among the five CGS that is 0.96, 0.814 and 0.454.

Original languageEnglish
Pages (from-to)351-358
Number of pages8
JournalInternational Journal of Botany
Volume3
Issue number4
Publication statusPublished - 2007

Fingerprint

Calophyllum inophyllum
primary forests
lowland forests
Borneo
Macaranga
Malaysia
cluster analysis
species diversity
basal area
Vitex pinnata
Arenga
Chionanthus
Antidesma
Mallotus (Euphorbiaceae)
Pithecellobium
Vernonia
Croton
Hevea brasiliensis
rubber
plantations

Keywords

  • Diversity
  • Euclidean distance measurement
  • Importance value
  • Malaysia
  • Tropical lowland
  • Ward linkage method

ASJC Scopus subject areas

  • Plant Science

Cite this

Cluster analysis on floristic composition and forest structure of hilly lowland forest in Lok Kawi, Sabah State of Malaysia. / Adam, Jumaat; Mahmud, Abdul Manap; Muslim, Nurulhuda Edy; Hamid, Hafiza A.; Jalaludin, Masdahila Ahmad.

In: International Journal of Botany, Vol. 3, No. 4, 2007, p. 351-358.

Research output: Contribution to journalArticle

Adam, Jumaat ; Mahmud, Abdul Manap ; Muslim, Nurulhuda Edy ; Hamid, Hafiza A. ; Jalaludin, Masdahila Ahmad. / Cluster analysis on floristic composition and forest structure of hilly lowland forest in Lok Kawi, Sabah State of Malaysia. In: International Journal of Botany. 2007 ; Vol. 3, No. 4. pp. 351-358.
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AU - Jalaludin, Masdahila Ahmad

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N2 - The purpose of this study was to carry out a vegetative study on the slope of Lok Kawi Hill. A total of 12 plots were laid between 20 to 350 m altitude on the slope of lowland hilly forest at Lok Kawi in Sabah State of Malaysia. These plots were subjected to cluster analysis using Ward Linkage Method (WLM) and Euclidean Distance Measurement (EDM). This similarity analysis classified them into five cluster groups (CGS). These CGS, denoted by three most dominant species in term of importance value were respectively named as Hevea brasiliensis-Parastemon urophyllum-Antidesma ghaesembilla Association (CGI); Chionanthus pachyphyllus-Parastemon urophyllum-Adinandra dumosa Association (CGII); Pithecellobium ellipticum-Calophyllum inophyllum-Arenga undulatifolia Association (CGIII); Calophyllum inophyllum-Croton oblongus-Cratoxylum arborescens Association (CG IV) and Oncosperma tigillarium-Sarcotheca glauca-Calophyllum inophyllum Association (CG V). The species diversity of these CGS were relatively poor. CGII and CGIII were each repres ented by 19 species, whereas CGIV, CGI and CGV comprised of 18, 10 and 6 species. In term of Basal Area Contribution (BAC), CGIII recorded the highest BAC, followed by CGII, CGIV, CGI and CGV. Density of trees between CGS was recorded highest in CGII, followed by CGIV, CGIII, CGI and CGV. Based on the species composition, CGI is an abandoned rubber plantation; CGII is a coastal vegetation with the presence of Oncosperma tigillarium; CGIII is a disturbed primary forest with the presence of Macranga hypoleuca, Macaranga gigantea and Mallotus paniculatus; CGIV is a disturbed primary forest with the presence of Vernonia arborea, Adinandra dumosa, Vitex pubescens and Macranga triloba; CGV is a disturbed primary forest with the presence of Macaranga gigantea. The value of species diversity differed between CGS. CGII have the highest R, H and E-values, 2.12, 2.393 and 0.813, followed by CGIII, CGIV, CGI and CGV. CGV possessed the lowest R, H and E-values among the five CGS that is 0.96, 0.814 and 0.454.

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