温度和捕食者作为社区财产的互动驱动因素
John P DeLong1, Kyle E Coblentz1, Stella F Uiterwaal1,2
1School of Biological Sciences University of Nebraska - Lincoln Lincoln Nebraska USA.
Ecology and evolution
|November 3, 2023
概括
变暖影响生态社区,影响多样性和生物质. 捕食者与猎物的相互作用显示了有限的温度效应,突出了预测社区变化的挑战.
科学领域:
- 生态生态学 生态生态学
- 环境科学 环境科学
- 微生物学 微生物学
背景情况:
- 生态社区对变暖的反应是复杂的,受个人生理学和捕食者-猎物动态的影响.
- 由于难以将微观层面的机制与宏观层面的社区模式联系起来,因此理解这些反应具有挑战性.
- 捕食者种群的变化可以与温度变化相互作用,进一步改变社区结构.
研究的目的:
- 研究气候变暖和掠食对生态社区的综合影响.
- 测试关于变暖如何影响社区多样性,身体大小,功能和组成的概括预测.
- 评估捕食者与猎物的相互作用在调解温度驱动的社区变化中的作用.
主要方法:
- 一个因数实验操纵温度和捕食者的存在 *Actinosphaerium*.
- 使用的微观世界包含各种各样的原生体,体和胃肠.
- 测量了社区呼吸的变化,捕食者:猎物生物体积比率,物种丰富性,身体大小和总体生物量.
主要成果:
- 社区呼吸和掠食者:猎物生物体积比率在中间温度达到峰值.
- 随着温度的增加,物种丰富度呈现下降.
- 总体生物量随着物种丰富度的增加而增加,这表明温度通过丰富度对生物量产生间接影响.
结论:
- 预测一般生态社区对变暖的反应仍然具有挑战性.
- 温度显著影响社区结构,特别是物种丰富性和生物量.
- 变暖和捕食之间的相互作用是有限的,捕食者的分布受到温度的影响.
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