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湖泊宏观无脊椎动物群体的空间和时间变化因安化而减少

Rui Dong¹, Kai Peng², Qingji Zhang³

¹Key Laboratory of Watershed Geographic Sciences, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, PR China; University of Chinese Academy of Sciences, Beijing, PR China.

Environmental research

|December 12, 2023

概括

化使台湖内地宏观无脊椎动物群落均质化,减少了沿着空间和时间梯度的生物多样性. 湖泊生态系统恢复项目显示出积极的影响,减少了空间差异.

科学领域:

淡水生态学淡水生态学
生态系统动态生态系统动态
生物多样性研究的研究.

背景情况:

欧洲化对全球淡水生态系统和生物多样性产生重大影响.
了解沿着肥胖化梯度的空间和时间β多样性变化至关重要,但仍然不清楚,特别是有限的多年时间序列数据.

研究的目的:

为了研究太湖谷湖中盆地宏观无脊椎动物的空间和时间β多样性.
为了确定空间和时间不相似性对整体谷底生物多样性的相对贡献.
为了检查社区集会机制及其对营养指标的反应.

主要方法:

在泰湖湖的三种息地类型 (巨型植物,开放水域,植物浮游生物) 的32个地点采集了本土巨型无脊椎动物的样本.
从2007年到2019年,采样发生在四个季节中,涵盖了长期的环氧化梯度.
分析的重点是空间和时间的不相似性,社区集会过程和营养指标关系.

主要成果:

缩导致了宏无脊椎动物社区在空间和时间尺度上的同质化.
虽然空间变异性主导了物种丰富和丰富,但时间差异 (季节性和跨年) 更容易受到缩的影响.
幼化削弱了对社区集会的环境控制,将时间集会从随机流程转移到决定性流程.

结论:

幼化推动了社区的同质化,并改变了淡水生态系统中的组装机制.
时间β多样性是对优化影响的敏感指标.
有证据表明,湖泊生态系统恢复项目在减少空间差异方面取得了成功.

关键词:

组装机制组装机制欧洲化是什么意思?宏观无脊椎动物在浅浅的湖泊浅浅的湖泊空间变化的空间变化.时间变化时间变化.

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