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Opportunistic behaviour or desperate measure? Logging impacts may only partially explain terrestriality in the Bornean orang-utan Pongo pygmaeus morio

机译:机会主义的行为还是绝望的措施?伐木影响可能仅部分解释了婆罗洲猩猩Pongo pygmaeus morio的陆地

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There is a lack of information on how the Endangered Bornean orang-utan Pongo pygmaeus morio moves through its environment. Here we report on a camera-trapping study carried out over 2.5 years to investigate the orang-utan's terrestrial behaviour in Wehea Forest, East Kalimantan, Indonesia. We set 41 camera trap stations in an area of secondary forest, 36 in recently logged forest immediately adjacent to Wehea Forest, and 20 in an area of primary forest in the heart of Wehea Forest. A combined sampling effort of 28,485 trap nights yielded 296 independent captures of orang-utans. Of the three study sites, orang-utans were most terrestrial in recently logged forest, which may be only partially explained by breaks in the canopy as a result of logging activity. However, orang-utans were also terrestrial in primary forest, where there was a closed canopy and ample opportunity for moving through the trees. Our results indicate that orang-utans may be more terrestrial than previously thought and demonstrate opportunistic behaviour when moving through their environment, including using newly constructed logging roads for locomotion, possibly indicating some degree of resilience to human disturbance. This finding is important because of the potential role of sustainably logged forests for orang-utan conservation.
机译:缺少有关濒危的婆罗洲猩猩Pongo pygmaeus morio如何穿越其环境的信息。在这里,我们报告了一项为期2.5年的相机诱捕研究,旨在调查印度尼西亚东加里曼丹省Wehea森林中猩猩的陆地行为。我们在次生森林地区设置了41个相机陷阱站,在紧邻Wehea森林的最近砍伐的森林中设置了36个相机驻车站,在Wehea森林中心的主要森林区域中设置了20个。总共28,485个陷阱夜的采样工作产生了296次独立捕获的猩猩。在这三个研究地点中,红毛猩猩在最近砍伐的森林中是最陆生的,这可能仅是由于伐木活动造成的冠层破裂而部分解释的。但是,猩猩在原始森林中也是陆生的,那里有一个封闭的树冠和充足的机会穿过树林。我们的结果表明,红毛猩猩可能比以前想象的更陆生,并且在穿越其环境时表现出机会主义行为,包括使用新建的伐木路进行运动,这可能表明它对人为干扰具有一定程度的适应力。这一发现很重要,因为可持续采伐的森林对于猩猩的保护具有潜在的作用。

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