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接近地表的风在时空尺度上的变化与羽毛追踪昆虫相关
Jaleesa Houle1, Floris van Breugel1
1Department of Mechanical Engineering, University of Nevada, Reno, Nevada 89557, USA.
Physics of fluids (Woodbury, N.Y. : 1994)
|October 12, 2023
概括
了解昆虫的气味羽毛跟踪需要分析风的动态. 风速和环境的复杂性显著影响昆虫如何成功地导航空中的气味痕迹.
科学领域:
- 生态生态学 生态生态学
- 大气科学 大气科学
- 动物行为 动物行为
背景情况:
- 气味羽毛追踪对许多生物,特别是飞行昆虫至关重要.
- 大气研究一直专注于污染,天气和风能,而不是昆虫规模的动态.
- 昆虫的气味跟踪受到风向和羽毛状特征的严重影响.
研究的目的:
- 描述与昆虫气味来源定位相关的微观风力动力学.
- 在不同环境 (明智的草原,森林,城市) 中比较近地表面风力数据.
- 将风的变化与昆虫的嗅觉搜索成功联系起来.
主要方法:
- 在内华达州北部三个不同的环境中收集了近地表面风力数据.
- 在短时间尺度 (1-10分钟) 上分析风速和方向变化.
- 与风向标准偏差相关的流强度.
主要成果:
- 随着风速的增加,风向变化率会减少.
- 环境表面的复杂性增加了风向的变化.
- 在风速变化 (流) 和风向变化之间观察到强烈的相关性.
结论:
- 风力动力学显著影响昆虫气味羽毛跟踪.
- 假设一个最佳范围的风速和环境复杂性,以成功的长距离跟踪.
- 结果为未来的实地研究和风洞设计提供了洞察力.
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