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Spatial distribution of white-handed gibbon calls in relation to forest vertical components, Malaysia, from a perspective of forest management

The aim of this study was to develop a tool that allows for rapid assessment of arboreal animal distributions. In our acoustic triangulation method, we placed directional microphones atop two canopy towers to get the bearings of calls, allowing us to study the spatial distribution of calling locatio...

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Main Authors: Okuda, Toshinori, Matsubara, Haruka, Yamada, Toshihiro, Chew, Wei Chuang, Meng, Alvin Shin Lau, Paska, Jacquoelyne, Nishizaki, Hiromitsu, Sidek Omar, Nur Shifatil Ulya, Zakaria, Mohamed
Format: Article
Published: Elsevier 2022
Online Access:http://psasir.upm.edu.my/id/eprint/103260/
https://www.sciencedirect.com/science/article/pii/S2351989422002475
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spelling my.upm.eprints.1032602023-11-22T03:34:28Z http://psasir.upm.edu.my/id/eprint/103260/ Spatial distribution of white-handed gibbon calls in relation to forest vertical components, Malaysia, from a perspective of forest management Okuda, Toshinori Matsubara, Haruka Yamada, Toshihiro Chew, Wei Chuang Meng, Alvin Shin Lau Paska, Jacquoelyne Nishizaki, Hiromitsu Sidek Omar, Nur Shifatil Ulya Zakaria, Mohamed The aim of this study was to develop a tool that allows for rapid assessment of arboreal animal distributions. In our acoustic triangulation method, we placed directional microphones atop two canopy towers to get the bearings of calls, allowing us to study the spatial distribution of calling locations of white-handed gibbon (Hylobates lar) within 2400 ha of the Pasoh Forest Reserve in Peninsular Malaysia in relation to three forest vertical components. The calling locations were analyzed in relation to a digital surface model, a digital terrain model, and canopy height (difference between the first two parameters) derived from LiDAR data. The locations where 49 calling points originated were mapped during the survey period (December 2018 to August 2019). All forest vertical components at the calling locations were significantly higher than the average values over the whole study site, which suggests that white-handed gibbons choose taller canopy trees at locations with higher elevation. Topographically convex areas (ridgetops or upper hillslopes) tended to be chosen as calling locations over concave areas (e.g., valleys, lower slopes). In addition, calling locations were concentrated in primary forest rather than in regenerating forest, where the canopy height was shorter and more structurally homogeneous than in the primary forest. Based on these results, we mapped the area of high probability for gibbon calling locations by compiling the four parameters of forest vertical components using principal component analysis. This map based on the vertical aspects of vegetation can be helpful in properly managing the forest for gibbon conservation, enabling a rapid assessment of land-use plans within a geographic area where the calling locations occur with high probability. Elsevier 2022 Article PeerReviewed Okuda, Toshinori and Matsubara, Haruka and Yamada, Toshihiro and Chew, Wei Chuang and Meng, Alvin Shin Lau and Paska, Jacquoelyne and Nishizaki, Hiromitsu and Sidek Omar, Nur Shifatil Ulya and Zakaria, Mohamed (2022) Spatial distribution of white-handed gibbon calls in relation to forest vertical components, Malaysia, from a perspective of forest management. Global Ecology and Conservation, 38. art. no. 2245. pp. 1-14. ISSN 2351-9894 https://www.sciencedirect.com/science/article/pii/S2351989422002475 10.1016/j.gecco.2022.e02245
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
description The aim of this study was to develop a tool that allows for rapid assessment of arboreal animal distributions. In our acoustic triangulation method, we placed directional microphones atop two canopy towers to get the bearings of calls, allowing us to study the spatial distribution of calling locations of white-handed gibbon (Hylobates lar) within 2400 ha of the Pasoh Forest Reserve in Peninsular Malaysia in relation to three forest vertical components. The calling locations were analyzed in relation to a digital surface model, a digital terrain model, and canopy height (difference between the first two parameters) derived from LiDAR data. The locations where 49 calling points originated were mapped during the survey period (December 2018 to August 2019). All forest vertical components at the calling locations were significantly higher than the average values over the whole study site, which suggests that white-handed gibbons choose taller canopy trees at locations with higher elevation. Topographically convex areas (ridgetops or upper hillslopes) tended to be chosen as calling locations over concave areas (e.g., valleys, lower slopes). In addition, calling locations were concentrated in primary forest rather than in regenerating forest, where the canopy height was shorter and more structurally homogeneous than in the primary forest. Based on these results, we mapped the area of high probability for gibbon calling locations by compiling the four parameters of forest vertical components using principal component analysis. This map based on the vertical aspects of vegetation can be helpful in properly managing the forest for gibbon conservation, enabling a rapid assessment of land-use plans within a geographic area where the calling locations occur with high probability.
format Article
author Okuda, Toshinori
Matsubara, Haruka
Yamada, Toshihiro
Chew, Wei Chuang
Meng, Alvin Shin Lau
Paska, Jacquoelyne
Nishizaki, Hiromitsu
Sidek Omar, Nur Shifatil Ulya
Zakaria, Mohamed
spellingShingle Okuda, Toshinori
Matsubara, Haruka
Yamada, Toshihiro
Chew, Wei Chuang
Meng, Alvin Shin Lau
Paska, Jacquoelyne
Nishizaki, Hiromitsu
Sidek Omar, Nur Shifatil Ulya
Zakaria, Mohamed
Spatial distribution of white-handed gibbon calls in relation to forest vertical components, Malaysia, from a perspective of forest management
author_facet Okuda, Toshinori
Matsubara, Haruka
Yamada, Toshihiro
Chew, Wei Chuang
Meng, Alvin Shin Lau
Paska, Jacquoelyne
Nishizaki, Hiromitsu
Sidek Omar, Nur Shifatil Ulya
Zakaria, Mohamed
author_sort Okuda, Toshinori
title Spatial distribution of white-handed gibbon calls in relation to forest vertical components, Malaysia, from a perspective of forest management
title_short Spatial distribution of white-handed gibbon calls in relation to forest vertical components, Malaysia, from a perspective of forest management
title_full Spatial distribution of white-handed gibbon calls in relation to forest vertical components, Malaysia, from a perspective of forest management
title_fullStr Spatial distribution of white-handed gibbon calls in relation to forest vertical components, Malaysia, from a perspective of forest management
title_full_unstemmed Spatial distribution of white-handed gibbon calls in relation to forest vertical components, Malaysia, from a perspective of forest management
title_sort spatial distribution of white-handed gibbon calls in relation to forest vertical components, malaysia, from a perspective of forest management
publisher Elsevier
publishDate 2022
url http://psasir.upm.edu.my/id/eprint/103260/
https://www.sciencedirect.com/science/article/pii/S2351989422002475
_version_ 1783879945417654272
score 13.211869

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