The mammals of Mt. Amuyao: a richly endemic fauna in the Central Cordillera of northern Luzon Island, Philippines
The mammals of Mt. Amuyao: a richly endemic fauna in the Central Cordillera of northern Luzon Island, Philippines
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阿姆耀山的哺乳动物：菲律宾吕宋岛北部中央山脉丰富的特有动物群
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发表时间：
2016
期刊：
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通讯作者：
L. Heaney
中科院分区：
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作者：
E. Rickart;D. Balete;Phillip A. Alviola;M. J. Veluz;L. Heaney
摘要古老海洋岛屿上的动物群往往具有极高的特有性，并被认为极易受到人为干扰。我们调查了丰富的地方性小型哺乳动物区系的山。位于菲律宾吕宋岛北方中部科迪勒拉山脉的阿木尧。我们测试的假设海拔模式的物种丰富度和社区组成，社区对栖息地干扰的反应，以及本地和非本地哺乳动物的相互作用。我们的研究揭示了更大的物种丰富度和动物群的异质性比以前怀疑的中央科迪勒拉。我们记录了15个本地物种（14啮齿动物和1食虫动物），和两个物种的非本地啮齿动物。所有的本地物种都是菲律宾特有的，其中8种仅限于科迪勒拉山脉。14个本地啮齿动物中有12个属于两个古老的地方性分支，这表明大部分区域多样性是原位物种形成的产物。原生哺乳动物群落生态多样，包括不同的营养习惯，活动模式和攀爬能力的物种。一些本地物种仅限于相对原始的栖息地，而另一些则对干扰具有高度的容忍性。非本地物种被限制在高度干扰的生境中，显然是被从过去的干扰中恢复的生境中的本地物种取代的。
Abstract Faunas of old oceanic islands often have extremely high levels of endemism and are considered highly susceptible to anthropogenic disruption. We surveyed the richly endemic small mammal fauna on Mt. Amuyao in the Central Cordillera of northern Luzon Island, Philippines. We tested hypotheses regarding elevational patterns of species richness and community composition, community response to habitat disturbance, and interactions of native and non-native mammals. Our study revealed greater species richness and faunal heterogeneity within the Central Cordillera than previously suspected. We documented 15 native species (14 rodents and 1 insectivore), and two species of non-native rodents. All of the native species are endemic to the Philippines, eight being restricted to the Cordillera. Twelve of the 14 native rodents belong to two ancient endemic clades, indicating that most of the regional diversity is the product of in situ speciation. Native mammal assemblages are ecologically diverse, and include species with varied trophic habits, activity patterns, and climbing ability. Some native species are restricted to relatively pristine habitat, whereas others are highly tolerant of disturbance. Non-native species are restricted to highly disturbed habitats and apparently are displaced by natives where habitat has regenerated from past disturbance.