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侵袭性灌木会对三种常见的小哺乳动物物种的秋季活动产生不同的改变
Brian Connolly1,2, Chad R Zirbel3, Carson Keller3
1Biology Department, Gonzaga University, Spokane, Washington, USA.
Ecology
|July 23, 2024
概括
像秋季橄和阿穆尔蜜这样的侵入性灌木改变了小型哺乳动物的季节性活动,延长了一些物种的食期. 这种植物入侵影响了生态相互作用和动物生理学.
科学领域:
- 生态生态学 生态生态学
- 侵入性物种 生物学 生物学
- 动物行为 动物行为
背景情况:
- 动物的季节性活动模式对于健康和生态相互作用至关重要.
- 全球变化,包括入侵植物,可以破坏这些自然的季节节律.
- 侵入性植物对动物季节性活动的影响,超出日常模式,尚不清楚.
研究的目的:
- 研究入侵性木灌木 (秋季橄和阿穆尔) 对三种小型哺乳动物的季节性活动的影响.
- 了解实验性移除入侵灌木如何影响动物的食行为和活动时间.
- 评估小型哺乳动物对植物入侵和息地变化的特定物种反应.
主要方法:
- 在六个配对的森林遗址试验移除入侵灌木 (秋季橄,阿穆尔蜜蜂).
- 连续两年利用秋季摄像头捕捉来监测小哺乳动物的活动.
- 专注于三种物种:东方 (Tamias striatus),白脚小鼠 (Peromyscus leucopus) 和狐松鼠 (Sciurus niger). 这三种物种主要包括:东方 (Tamias striatus),白脚小鼠 (Peromyscus leucopus) 和 (Sciurus niger).
主要成果:
- 在灌木入侵的地区,东部甲表现出延长的食期 (20+天).
- 白足小鼠在一年内在被入侵的地块中增加了食,但活动时间没有显著变化.
- 狐松鼠活动表现出对灌木移除的特定年份反应,受温度等年内线索的影响.
结论:
- 侵入性植物可能会导致小哺乳动物季节性活动模式的特定物种变化.
- 这些入侵可能会影响小型哺乳动物中关键生理过程的时间,例如的时间.
- 由于植物入侵而改变的季节性活动可以修改动物介导的生态过程,如种子分散和 granivory.
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