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A Method for Quantifying Foliage-Dwelling Arthropods
Published on: October 20, 2019
蝙蝠在新热带农林系统中限制昆虫
Kimberly Williams-Guillén1, Ivette Perfecto, John Vandermeer
1School of Natural Resources and Environment, University of Michigan, Ann Arbor, MI 48109, USA. kimwg@umich.edu
Science (New York, N.Y.)
|April 5, 2008
概括
鸟类和蝙蝠的掠食对咖啡植物中的节肢动物种群产生了重大影响. 以前的研究可能低估了蝙蝠掠食效应,因为它们对鸟类的附加影响.
科学领域:
- 生态生态学 生态生态学
- 动物学 动物学
- 农业科学 农业科学
背景情况:
- 排斥实验是研究捕食者对关节动物的影响的常见实验.
- 捕食鸟类是影响节肢动物数量丰富的一个已有证据的因素.
- 蝙蝠作为农业系统中的捕食者的作用是不太了解的.
研究的目的:
- 量化鸟类和蝙蝠掠食对墨西哥咖啡种植园关节动物的单独和综合影响.
- 评估以往只关注鸟类的排除实验是否可能忽视了蝙蝠掠食的重大影响.
主要方法:
- 在墨西哥咖啡种植园进行了排斥实验.
- 不包括从特定咖啡植物中摘叶的鸟类和蝙蝠.
- 在干旱和潮湿季节,对照植物和排斥植物的关节动物丰度进行比较.
主要成果:
- 鸟类掠食在干旱季节减少了30%的节肢动物;鸟类和蝙蝠的联合排除减少了46%的节肢动物.
- 在雨季,蝙蝠减少了84%,而鸟类则减少了58%.
- 鸟类和蝙蝠掠食的影响是附加的.
结论:
- 蝙蝠掠食可能是控制咖啡农业生态系统中的关节动物种群的一个主要因素,特别是在雨季.
- 以前只关注鸟类的排斥实验可能低估了捕食者的总影响.
- 这些发现强调了在生态研究中考虑包括蝙蝠在内的多个捕食者群体的重要性.
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