可以增加在同质的农业景观中的小麦田的掠夺率
Marco Ferrante1, Marlene Schulze1, Catrin Westphal2
1Functional Agrobiodiversity, Department of Crop Sciences, University of Göttingen, 37077, Göttingen, Germany.
Journal of environmental management
|November 9, 2023
概括
简单的农业景观中的树显著增加了自然敌人的活动,特别是在同质的地区. 这突显了它们作为生物多样性热点的关键作用,提供了比以前想象的更大的保护价值.
科学领域:
- 生态生态学 生态生态学
- 农业科学 农业科学
- 保护生物学 保护生物学
背景情况:
- 农业景观中的半自然息地支持像自然敌人一样有益的物种.
- 了解掠食率是评估这些息地的生态作用的关键.
研究的目的:
- 为了比较不同半自然边缘 (草与草边缘) 邻的小麦田中的节肢动物和脊椎动物掠食率.
- 调查景观异质性 (同质与异质) 对掠食率的影响.
- 确定植物多样性在调解自然敌人掠食中的作用.
主要方法:
- 使用塑制成的人工毛虫来测量掠食.
- 在围和草边缘旁边的小麦田中比较掠食率.
- 分析了两种对比的农业景观类型的数据:均质和异质.
主要成果:
- 总的掠食率为25.3%,关节动物是主要的掠食者 (67.1%).
- 在均质和异质景观之间,掠食率总体上是相似的.
- 一个显著的相互作用显示,在均质的景观中,围附近的总掠食性高于草边缘,这与植物物种丰富有关.
结论:
- 树在简单的农业景观中提供了不成比例的高保护价值,作为关键息地岛屿.
- 围中的植物多样性是支持更高捕食者活动的关键机制,特别是在同质的环境中.
- 保护战略应优先考虑简化农业系统中的,以最大限度地提高生物多样性的好处.
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