当前位置: X-MOL 学术Primates › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
A comparative evaluation of thermal camera and visual counting methods for primate census in a riparian forest at the Lower Kinabatangan Wildlife Sanctuary (LKWS), Malaysian Borneo
Primates ( IF 1.7 ) Pub Date : 2020-06-22 , DOI: 10.1007/s10329-020-00837-y
Amaziasizamoria Jumail 1, 2 , Thor-Seng Liew 1 , Milena Salgado-Lynn 2, 3, 4 , Kimberly M Fornace 5 , Danica J Stark 2
Affiliation  

A number of primate census techniques have been developed over the past half-century, each of which have advantages and disadvantages in terms of resources required by researchers (e.g., time and costs), availability of technologies, and effectiveness in different habitat types. This study aims to explore the effectiveness of a thermal imaging technique to estimate the group size of different primate species populations in a degraded riparian forest in the Lower Kinabatangan Wildlife Sanctuary (LKWS), Sabah. We compared this survey technique to the conventional visual counting method along the riverbank. For 38 days, a total of 138 primate groups were observed by thermal camera and visually throughout the study. Optimal conditions for the thermal camera were clear weather, not more than 100 m distance from the observer to the targeted area, boat speed ranging between 5 and 12 km/h, and early morning between 04:30 and 05:30 am. The limitations of the thermal cameras include the inability to identify individual species, sexes, age classes, and also to discern between animals closely aggregated (i.e., mothers with attached infants). Despite these limitations with the thermal camera technique, 1.78 times more primates were detected than counting by eye ( p < 0.001), showing the potential benefit of using thermal cameras as an important tool in primate surveys. Nevertheless, ground truthing must be conducted immediately after, or simultaneously during, the thermal survey to verify the species of animals observed on the thermal imagery.

中文翻译:

马来西亚婆罗洲下京那巴当岸野生动物保护区 (LKWS) 河岸森林灵长类动物普查的热像仪和目视计数方法的比较评估

在过去的半个世纪里,已经开发了许多灵长类动物普查技术,每种技术在研究人员所需的资源(例如时间和成本)、技术的可用性以及在不同栖息地类型中的有效性方面都有优势和劣势。本研究旨在探索热成像技术在沙巴下京那巴当岸野生动物保护区 (LKWS) 退化河岸森林中估计不同灵长类物种种群数量的有效性。我们将这种调查技术与沿河岸的传统目视计数方法进行了比较。在 38 天的时间里,在整个研究过程中,通过热像仪和视觉观察了总共 138 个灵长类动物群。热像仪的最佳条件是天气晴朗,观察者到目标区域的距离不超过 100 m,船速在 5 至 12 公里/小时之间,凌晨 04:30 至 05:30 之间。热像仪的局限性包括无法识别单个物种、性别、年龄等级,以及无法区分紧密聚集的动物(即带有婴儿的母亲)。尽管热像仪技术存在这些限制,但检测到的灵长类动物数量是肉眼计数的 1.78 倍(p < 0.001),这表明使用热像仪作为灵长类动物调查的重要工具的潜在好处。然而,必须在热调查之后立即或同时进行地面实况验证,以验证在热图像上观察到的动物种类。热像仪的局限性包括无法识别单个物种、性别、年龄等级,以及无法区分紧密聚集的动物(即带有婴儿的母亲)。尽管热像仪技术存在这些限制,但检测到的灵长类动物数量是肉眼计数的 1.78 倍(p < 0.001),这表明使用热像仪作为灵长类动物调查的重要工具的潜在好处。然而,必须在热调查之后立即或同时进行地面实况验证,以验证在热图像上观察到的动物种类。热像仪的局限性包括无法识别单个物种、性别、年龄等级,以及无法区分紧密聚集的动物(即带有婴儿的母亲)。尽管热像仪技术存在这些限制,但检测到的灵长类动物数量是肉眼计数的 1.78 倍(p < 0.001),这表明使用热像仪作为灵长类动物调查的重要工具的潜在好处。然而,必须在热调查之后立即或同时进行地面实况验证,以验证在热图像上观察到的动物种类。检测到的灵长类动物数量是肉眼计数的 78 倍 (p < 0.001),表明使用热像仪作为灵长类动物调查的重要工具的潜在好处。然而,必须在热调查之后立即或同时进行地面实况验证,以验证在热图像上观察到的动物种类。检测到的灵长类动物数量是肉眼计数的 78 倍 (p < 0.001),表明使用热像仪作为灵长类动物调查的重要工具的潜在好处。然而,必须在热调查之后立即或同时进行地面实况验证,以验证在热图像上观察到的动物种类。
更新日期:2020-06-22
down
wechat
bug