Great ape surveys and the implications of long-term monitoring in the Djéké Triangle, Republic of Congo.

IF 1.3 4区 生物学 Q2 ZOOLOGY
W Mayoukou, D Morgan, S Strindberg, P McElmurray, C Abedine, C Sanz
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引用次数: 0

Abstract

Existing protected areas are anchors for conservation. Safeguarding flora and fauna within their peripheral areas is essential to maintaining their integrity and to potential increases to the area under effective conservation. With the decline in tropical forests, initiatives to increase the area of undisturbed forests under strict protection, particularly those neighboring protected areas, is of critical importance. Applied research has informed such land-management decisions for areas surrounding the Nouabalé-Ndoki National Park (NNNP) in Republic of Congo since the park's inception three decades ago. Here, we present results of the first systematic line transect survey of great ape nests conducted in the Djéké Triangle, a 100 km2 unlogged continuous forest in the Kabo Forestry Management Unit adjacent to the NNNP. Distance sampling methods applied along 26 line transects on two different occasions (2016 and 2018, with total effort of 69.4 km) provided density estimates of 0.75 (95% confidence interval (CI) 0.52-1.09) and 0.61 (95% CI 0.40-0.92) chimpanzees/km2 and 2.15 (95% CI 1.36-3.40) and 1.19 (95% CI 0.78-1.82) gorillas/km2 for each of the two surveys, respectively. Estimated ape densities were compared to others across the landscape. The findings provide a unique baseline in an area that supports ongoing behavioral research and future gorilla tourism opportunities in the Djéké Triangle. More importantly, results provided empirical evidence of the environmental value and strategic conservation importance supporting inclusion of the Djéké Triangle into the NNNP in 2023. These long-term monitoring results inform best-practice standards and ape tourism certification.

刚果共和国杰凯三角区的巨猿调查和长期监测的影响。
现有保护区是保护工作的支柱。保护保护区周边地区的动植物对保持保护区的完整性和增加有效保护区面积至关重要。随着热带森林面积的减少,增加严格保护下的未受干扰森林面积,特别是那些与保护区相邻的森林面积的举措至关重要。自三十年前刚果共和国努瓦巴雷-恩多基国家公园(NNNP)成立以来,应用研究为该公园周边地区的土地管理决策提供了依据。在此,我们介绍了首次在杰凯三角区(Djéké Triangle)对巨猿巢穴进行系统横断面调查的结果,该三角区是毗邻努瓦巴莱-恩多基国家公园的卡博林业管理区的一片 100 平方公里未砍伐的连片森林。两次不同场合(2016 年和 2018 年,总工作量为 69.4 千米)沿 26 条横断面采用的距离采样方法分别提供了 0.75(95% 置信区间(CI)0.52-1.09)和 0.61(95% CI 0.40-0.92)只黑猩猩/平方千米和 2.15(95% CI 1.36-3.40)只大猩猩/平方千米和 1.19(95% CI 0.78-1.82)只大猩猩/平方千米的密度估计值。估计的猿类密度与整个地貌中的其他猿类密度进行了比较。这些发现为正在进行的行为研究和未来杰凯三角洲的大猩猩旅游机会提供了一个独特的基线。更重要的是,研究结果提供了环境价值和战略保护重要性的实证证据,支持在 2023 年将杰凯三角区纳入国家自然保护区。这些长期监测结果为最佳实践标准和猿类旅游认证提供了依据。
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来源期刊
Primates
Primates 生物-动物学
CiteScore
3.10
自引率
17.60%
发文量
71
审稿时长
>12 weeks
期刊介绍: Primates is an international journal of primatology whose aim is to provide a forum for the elucidation of all aspects of primates. The oldest primatological journal, Primates publishes original papers that advance the scientific study of primates, and its scope embraces work in diverse fields covering biological bases of behavior, socio-ecology, learning and cognition, social processes, systematics, evolution, and medicine. Contributions relevant to conservation of natural populations and welfare of captive primates are welcome. Studies focusing on nonprimate species may be considered if their relevance to primatology is clear. Original Articles as well as Review Articles, News and Perspectives, and Book Reviews are included. All manuscripts received are initially screened for suitability by members of the Editorial Board, taking into account style and ethical issues, leading to a swift decision about whether to send the manuscript for external review.
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