Efficiency of Fixed-Width Transect and Line-Transect-based Distance Sampling to Survey Red Junglefowl (Gallus gallus spadiceus) in Peninsular Malaysia

Azhar, Badrul and Zakaria, Mohamed and Yusof, Ebil and Puan, Chong Leong (2008) Efficiency of Fixed-Width Transect and Line-Transect-based Distance Sampling to Survey Red Junglefowl (Gallus gallus spadiceus) in Peninsular Malaysia. Journal of Sustainable Development, 1 (2). pp. 63-73. ISSN 1913-9063

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Official URL: http://www.ccsenet.org/journal/index.php/jsd/article/view/1335

Abstract

Reliable survey method is very important to estimate wildlife population. In this study, fixed-width strip- and line-transect samplings were simultaneously used to yield population estimates on oil palm plantation. The latter was found to be more accurate but less precise than the former based on the Per cent Relative Bias (hereafter PRB). Using the strip-transect, an overall density and abundance were estimated at 0.3237 birds/ha and 3 018 ± 273 birds (CV = 9.05%), respectively. An unbiased overall density generated by line-transect, D ± S.E. = 0.500 ± 0.069 birds/ha (95% CI: 0.38137 - 0.65521) and estimated total abundance, N ± S.E. was 4 661 ± 644 birds (95% CI: 3 556 - 6 109; CV = 13.81%) for the entire 9 323.53 ha study area. The former and latter method gave relative and absolute estimates, respectively.

Item Type:Article
Keyword:Density, Abundance, Fixed-width strip-, Line-transect, Per cent Relative Bias
Faculty or Institute:Faculty of Forestry
ID Code:7410
Deposited By: Norhazura Hamzah
Deposited On:23 Jun 2010 02:48
Last Modified:23 Jun 2010 02:50

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