Species accumulation curve of a coastal hill forest in Peninsular Malaysia

Faridah Hanum, . and Kamziah Abdul Kudus, . and Awang Noor Abdul Ghani Putra Malaysia Univ., . (2010) Species accumulation curve of a coastal hill forest in Peninsular Malaysia. [Proceedings Paper]

Sampling tree diversity in a tropical forest is often very laborious and costly. With 16 different forest types present in Malaysia it is deemed necessary to have the minimum sampling size determined for each of these forest types. This paper reports the findings on one of these forest types studies; namely coastal hill forest at Pasir Tengkorak Langkawi. Five plots each of size 1-ha 100m x 100m were established along a line transect. In each plot 100 subplots each measuring 10m x 10m were further established. All trees 1cm dbh and above were enumerated measured and identified up to the specific level. On per hectare basis there were 3414 trees/ha and 120 tree species/ha. The jackknife estimate and species area curve were applied to estimate the species richness. A total of 3414 individual trees representing 120 species 81 genera and 31 families were recorded. Species with highest relative abundance were Swintonia sp.1 Garcinia eugnifolia and Syzygium sp.1. The jackknife estimate of species richness was 132.9 and the regression equation to estimate species richness was LnS 2.53 0.24 inA with F 96.01. The species area curve declined as sample area increased but did not approach an asymptote at 1-ha. A minimum sampling area of 1-ha is recommended for sampling a coastal hill forest until the plot is further increased to determine its asymptote.

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Abstract

Sampling tree diversity in a tropical forest is often very laborious and costly. With 16 different forest types present in Malaysia it is deemed necessary to have the minimum sampling size determined for each of these forest types. This paper reports the findings on one of these forest types studies; namely coastal hill forest at Pasir Tengkorak Langkawi. Five plots each of size 1-ha 100m x 100m were established along a line transect. In each plot 100 subplots each measuring 10m x 10m were further established. All trees 1cm dbh and above were enumerated measured and identified up to the specific level. On per hectare basis there were 3414 trees/ha and 120 tree species/ha. The jackknife estimate and species area curve were applied to estimate the species richness. A total of 3414 individual trees representing 120 species 81 genera and 31 families were recorded. Species with highest relative abundance were Swintonia sp.1 Garcinia eugnifolia and Syzygium sp.1. The jackknife estimate of species richness was 132.9 and the regression equation to estimate species richness was LnS 2.53 0.24 inA with F 96.01. The species area curve declined as sample area increased but did not approach an asymptote at 1-ha. A minimum sampling area of 1-ha is recommended for sampling a coastal hill forest until the plot is further increased to determine its asymptote.

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Item Type:	Proceedings Paper
Additional Information:	Summary En
AGROVOC Term:	Tropical forests
AGROVOC Term:	Peninsular Malaysia
AGROVOC Term:	Coastal area
AGROVOC Term:	Trees
AGROVOC Term:	Forest reserves
Geographical Term:	MALAYSIA
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 05:14
URI:	http://webagris.upm.edu.my/id/eprint/11485

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