在沿海红杉森林中冬季蝙蝠活动的微气候驱动因素
Chelsea L Andreozzi1, Adina M Merenlender1
1Department of Environmental Science, Policy, and Management, University of California, Berkeley, 130 Mulford Hall, Berkeley, CA 94720, United States.
Journal of mammalogy
|September 30, 2024
概括
加利福尼亚红木森林的冬季蝙蝠活动比以前认为的要高. 被动声学监测揭示了特定物种的温度值,并强调了迁徙蝙蝠在树冠水平检测的重要性.
科学领域:
- 生态生态学 生态生态学
- 哺乳动物学 哺乳动物学
- 生物声学是一种生物声学.
背景情况:
- 蝙蝠在冬季的行为和活动模式仍然不太清楚.
- 调查神秘的森林蝙蝠,特别是在雨季,提出了重大挑战.
- 了解过冬的行为对于蝙蝠的保护至关重要.
研究的目的:
- 量化加利福尼亚海岸红杉森林11种蝙蝠的过冬行为.
- 评估微气候和探测器放置对蝙蝠检测概率的影响.
- 改进冬季蝙蝠调查方法.
主要方法:
- 在沿海红杉森林中利用了被动声学监测.
- 检查了声学探测器放置 (树顶与地面水平) 的影响.
- 采用了通用的线性混合模型来分析与环境变量和探测器高度相关的检测概率.
主要成果:
- 白天的最高温度是影响夜间蝙蝠检测概率的主要因素.
- 确定了特定物种的检测温度值,揭示了*Myotis yumanensis*和*M. californicus*之间的差异.
- 在天花板层监测中,发现迁徙物种的频率高于地面方法.
结论:
- 加利福尼亚红木森林在冬季支持比以前记录的更多样化和活跃的蝙蝠种群.
- 微气候和探测器的位置显著影响蝙蝠的检测,需要不同的调查策略.
- 这些发现强调了沿海森林作为居民和迁徙蝙蝠的冬季重要息地的重要性.
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