Estimating Sunda Scop Owl (Otus lempiji horsfield) density based on distance sampling and call playback, Peninsular Malaysia

Nocturnal birds in the tropics remain little studied primarily due to the logistical difficulties of surveying these birds at night.While call playback has been widely employed in the temperate regions, its practicality has not been adequately demonstrated on tropical owl species.This study aimed t...

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Main Author:	Pilla, Phillcaine
Format:	Thesis
Language:	English
Published:	2016
Subjects:	Birds - Southeast Asia Rain forest animals
Online Access:	http://psasir.upm.edu.my/id/eprint/70053/1/FH%202016%201%20IR.pdf
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id	my-upm-ir.70053
record_format	uketd_dc
spelling	my-upm-ir.700532019-08-22T02:26:47Z Estimating Sunda Scop Owl (Otus lempiji horsfield) density based on distance sampling and call playback, Peninsular Malaysia 2016-02 Pilla, Phillcaine Nocturnal birds in the tropics remain little studied primarily due to the logistical difficulties of surveying these birds at night.While call playback has been widely employed in the temperate regions, its practicality has not been adequately demonstrated on tropical owl species.This study aimed to test the feasibility of estimating the density of the Sunda Scops Owl (Otus lempiji) in a lowland forest in Peninsular Malaysia based on distance sampling and call playback.From a total of 58 detections of the owl species from October 2012 to May 2013, 72.41%(42 detections) were made when the birds were breeding. The densities of the owl were estimated at 0.17 ± 0.04 or 0.28 ± 0.06 individuals/ha based on spontaneous and provoked calls (i.e. before and after call playback), respectively. Broadcasting of the calls significantly increased the numbers of detections (χ2 = 16.038, P < 0.001) during both breeding and non-breeding seasons of the birds. Based on logistic regression analysis, the probability of detections was also significantly associated with the owl’s breeding period.The combination of call playback and distance sampling can be potentially applied on other little known and threatened owl species in Southeast Asia. Birds - Southeast Asia Rain forest animals 2016-02 Thesis http://psasir.upm.edu.my/id/eprint/70053/ http://psasir.upm.edu.my/id/eprint/70053/1/FH%202016%201%20IR.pdf text en public masters Universiti Putra Malaysia Birds - Southeast Asia Rain forest animals
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English
topic	Birds - Southeast Asia Rain forest animals
spellingShingle	Birds - Southeast Asia Rain forest animals Pilla, Phillcaine Estimating Sunda Scop Owl (Otus lempiji horsfield) density based on distance sampling and call playback, Peninsular Malaysia
description	Nocturnal birds in the tropics remain little studied primarily due to the logistical difficulties of surveying these birds at night.While call playback has been widely employed in the temperate regions, its practicality has not been adequately demonstrated on tropical owl species.This study aimed to test the feasibility of estimating the density of the Sunda Scops Owl (Otus lempiji) in a lowland forest in Peninsular Malaysia based on distance sampling and call playback.From a total of 58 detections of the owl species from October 2012 to May 2013, 72.41%(42 detections) were made when the birds were breeding. The densities of the owl were estimated at 0.17 ± 0.04 or 0.28 ± 0.06 individuals/ha based on spontaneous and provoked calls (i.e. before and after call playback), respectively. Broadcasting of the calls significantly increased the numbers of detections (χ2 = 16.038, P < 0.001) during both breeding and non-breeding seasons of the birds. Based on logistic regression analysis, the probability of detections was also significantly associated with the owl’s breeding period.The combination of call playback and distance sampling can be potentially applied on other little known and threatened owl species in Southeast Asia.
format	Thesis
qualification_level	Master's degree
author	Pilla, Phillcaine
author_facet	Pilla, Phillcaine
author_sort	Pilla, Phillcaine
title	Estimating Sunda Scop Owl (Otus lempiji horsfield) density based on distance sampling and call playback, Peninsular Malaysia
title_short	Estimating Sunda Scop Owl (Otus lempiji horsfield) density based on distance sampling and call playback, Peninsular Malaysia
title_full	Estimating Sunda Scop Owl (Otus lempiji horsfield) density based on distance sampling and call playback, Peninsular Malaysia
title_fullStr	Estimating Sunda Scop Owl (Otus lempiji horsfield) density based on distance sampling and call playback, Peninsular Malaysia
title_full_unstemmed	Estimating Sunda Scop Owl (Otus lempiji horsfield) density based on distance sampling and call playback, Peninsular Malaysia
title_sort	estimating sunda scop owl (otus lempiji horsfield) density based on distance sampling and call playback, peninsular malaysia
granting_institution	Universiti Putra Malaysia
publishDate	2016
url	http://psasir.upm.edu.my/id/eprint/70053/1/FH%202016%201%20IR.pdf
_version_	1747812749918863360

Estimating Sunda Scop Owl (Otus lempiji horsfield) density based on distance sampling and call playback, Peninsular Malaysia

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