土地使用强度影响欧洲四足动物的食物网
Christophe Botella1,2, Pierre Gaüzère1, Louise O'Connor1
1Université Grenoble Alpes, Université Savoie Mont Blanc, CNRS, LECA, Grenoble, France.
Global change biology
|February 13, 2024
概括
土地利用的强化改变了食物网架构,减少了顶级捕食者和通常的基底物种. 这影响了生态系统的稳定性和弹性,突出了保护顶级捕食者的必要性.
科学领域:
- 生态生态学 生态生态学
- 保护生物学 保护生物学
- 环境科学 环境科学
背景情况:
- 土地利用的强化显著改变了食用群体,影响了食物网架构,生态系统功能,服务,稳定性和弹性.
- 描述土地管理强度在不同土地用途的食物网络架构上的大规模印记仍然是一个关键的研究缺口.
研究的目的:
- 研究土地管理强度如何影响欧洲陆地脊椎动物群落食物网架构的六个关键方面.
- 评估土地利用和气候对土地管理强度和食物网结构之间的关系的缓和作用.
主要方法:
- 分析了来自欧洲67,051个陆地脊椎动物群体的数据.
- 量化了六个食物网架构指标:顶峰和基底物种比例,连接性,食肉性,食物链长度和分隔.
- 研究了土地利用和气候变量对强化影响的影响.
主要成果:
- 土地管理的强度显著影响了食物网架构,独立于气候.
- 强化持续降低了顶峰掠食者比例,并普遍降低了基底物种比例,同时有利于中等掠食者.
- 粮食网络显示,在强化下,细分化减少,连接性增加,地中海和阿尔卑斯山地区的特定背景变化,以及森林和耕地等特定土地用途.
结论:
- 土地利用的强化深刻地重塑了食物网,通常是以牺牲顶峰和基底物种为代价,有利于中等掠食者.
- 观察到的变化引发了人们对生态系统在人类压力下的长期稳定性和弹性的担忧.
- 保护顶级捕食者对于保持食物网的完整性和生态系统服务至关重要.
关键词:
人类化是人类化.生物同质化的生物同质化.众包 (crowdsourcing) 是一种众包方式.食物网是一种食物网.强化的加剧加剧.土地使用情况 土地使用情况它们是四足动物,四足动物.热带网络 (Trophic Networks) 是一种热带网络.更多相关视频
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