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气候影响广泛,景观影响狭:对农业有益昆虫的影响
Abigail L Cohen1, Lincoln Best2, James H DeVries3
1University of Calgary, Department of Biology, 2500 University Drive NW, Calgary, AB T2N 1N4, Canada.
The Science of the total environment
|March 20, 2025
概括
气候变化影响昆虫授粉服务. 热量和湿度是关键因素,不同的蜜蜂类型对温度变化有独特的反应,可能会影响多样性.
科学领域:
- 生态生态学 生态生态学
- 环境科学 环境科学
- 保护生物学 保护生物学
背景情况:
- 像蜜蜂一样,昆虫对生态系统服务至关重要,包括在自然和农业环境中的授粉.
- 它们发展,生存和移动的能力受到天气,气候和景观的影响,所有这些都受到气候变化的影响.
- 气候变化对这些重要的生态系统服务构成威胁,可能会破坏昆虫种群及其功能.
研究的目的:
- 为北美大草原50种蜜蜂种类的物种发生模型.
- 分析天气,气候和景观变量对蜜蜂种群的相对重要性.
- 了解不同蜂群如何对环境因素,特别是温度和湿度做出反应.
主要方法:
- 利用了来自320个采样地点的超过97,000个蜜蜂发生记录的数据库.
- 采用基于树的机器学习方法,用于预测分类模型的极端梯度提升.
- 分析了累计度日,累计降水量和百分比树木覆盖的重要性.
主要成果:
- 累计度日,累计降水量和百分比树木覆盖率是影响蜜蜂出现的最重要的变量.
- 蜜蜂分类学群体对天气变量表现出最强烈的反应,反应与特征分类保持一致.
- 景观变量对蜜蜂分布有微弱和物种特异性的影响.
结论:
- 授粉服务供应主要取决于热量和水分的可用性.
- 洞穴巢和地面巢的蜜蜂对温度上升表现出相反的反应.
- 这些不同的反应可能会对蜜蜂群落的分类学和功能多样性产生重大影响.
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