Shanee Sam, Roque Perez Erick Rodolfo, Vero Veronica, Allgas Nestor, Fernandez-Hidalgo Lorena, Walford Jack, Kany Samantha, Aldrich Brooke
Neotropical Primate Conservation, Windrush, Looe Hill, Seaton, Cornwall, UK.
Asociación Neotropical Primate Conservation Perú, Moyobamba, San Martin, Perú.
Sci Rep. 2025 Aug 25;15(1):31172. doi: 10.1038/s41598-025-17148-1.
Urban expansion is a global driver of wildlife decline, with cities encroaching into forested areas, leading among other things to habitat loss and fragmentation. This can result in remnant forest patches becoming isolated within anthropogenic mosaics, trapping wildlife unable to move beyond the urban areas. The city of Moyobamba, capital of Peru's San Martin region, population has increased rapidly since 1970 and is currently estimated at ~ 90,000 people. Moyobamba's urban forest patches are home to the endemic and Critically Endangered San Martin titi monkey (Plecturocebus oenanthe). We conducted an 18-month survey of primates in 23 urban forest patches to determine the presence of P. oenanthe, evaluate the patch-specific variables influencing its presence, and estimate its population size and density in the remaining green areas of Moyobamba city. Plecturocebus oenanthe was present in 17 patches and was never detected outside of patches. Using triangulation we estimate 26 groups of P. oenanthe in Moyobamba, with an average occupied-patch density of 26.9/km. The number of groups per patch was positively correlated with patch area (p = 0.023) and distance between patches (p = 0.0004), whereas presence and density were not correlated with any other landscape metrics, patch size, or habitat structure. Our results demonstrate that urban forests can support important populations of primates, particularly endemic and threatened species. Therefore, remnant forest patches and green corridors should be prioritized in urban planning strategies to ensure long-term wildlife persistence in rapidly developing landscapes.
城市扩张是全球野生动物数量减少的一个驱动因素，城市不断侵蚀森林地区，除其他因素外，还导致栖息地丧失和破碎化。这可能导致残留的森林斑块在人为镶嵌体中孤立，困住无法越过城市区域的野生动物。秘鲁圣马丁地区首府莫约班巴市的人口自1970年以来迅速增长，目前估计约为9万人。莫约班巴市的城市森林斑块是特有且极度濒危的圣马丁伶猴（Plecturocebus oenanthe）的家园。我们对23个城市森林斑块中的灵长类动物进行了为期18个月的调查，以确定圣马丁伶猴的存在情况，评估影响其存在的斑块特定变量，并估计其在莫约班巴市剩余绿地中的种群数量和密度。圣马丁伶猴出现在17个斑块中，在斑块之外从未被发现。通过三角测量法，我们估计莫约班巴有26群圣马丁伶猴，平均占据斑块密度为每平方公里26.9群。每个斑块中的猴群数量与斑块面积（p = 0.023）和斑块之间的距离（p = 0.0004）呈正相关，而其存在和密度与任何其他景观指标、斑块大小或栖息地结构均无关联。我们的研究结果表明，城市森林可以支持重要的灵长类动物种群，特别是特有和受威胁物种。因此，在城市规划策略中应优先考虑残留的森林斑块和绿色走廊，以确保野生动物在快速发展的景观中长期生存。
