Rerponse by large mammals to mast fruiting in southeast Asian tropical forests

我在沙巴州、婆罗洲(达努姆山谷、基纳巴坦甘和塔宾)的三个研究地点使用相机陷阱监测大型陆地哺乳动物的种群变化。在所有研究地点，我们在研究开始时都观察到了大规模的桅杆结实现象。在所有研究地点中，包括婴儿或多个长须猪个体的照片比例在肥大结果时增加，但在其他物种中也观察到这种趋势。在灵长类动物中，只有猩猩的数量随着果实强度的增加而增加。这些事实表明，只有少数大型哺乳动物物种对肥大的结果表现出数字上的反应，例如长胡子的猪的繁殖力增加和猩猩的迁徙。

I monitored the population changes of large terrestrial mammals using camera traps in three study sites in Sabah, Borneo (Danum Valley, Kinabatangan and Tabin). In all the study sites, large-scale mast fruiting was observed at the beginning of our research. In all the study sites, the proportion of photos including infants or multiple individuals of bearded pigs increased at the time of mast fruiting but such tendency was observed for other species. Among primates, only orangutans increased their number in response to increased fruiting intensity. These facts suggests that only minority of the large mammal species show numerical response to mast fruiting, such as increased reproduction in bearded pigs and migration in orangutans.