无脊椎动物衰退的生态系统后果
Nico Eisenhauer1, Raúl Ochoa-Hueso2, Yuanyuan Huang1
1German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstrasse 4, 04103 Leipzig, Germany; Institute of Biology, Leipzig University, Puschstrasse 4, 04103 Leipzig, Germany.
Current biology : CB
|September 27, 2023
概括
草原中的无脊椎动物生物量损失大大降低了生态系统的多功能性和关键服务,如害虫控制和分解. 这种下降威胁到草原的完整性,因为它破坏了生态过程并减少了基本的生态系统服务.
科学领域:
- 生态生态学 生态生态学
- 环境科学 环境科学
- 生物多样性研究 生物多样性研究
背景情况:
- 人类活动正在导致生物多样性的重大变化.
- 无脊椎动物的数量下降是一个日益关注的问题,但它的生态系统后果尚未得到充分研究.
- 之前的研究表明,无脊椎动物生物质和丰富度的大量损失.
研究的目的:
- 调查地面无脊椎动物生物质损失对生态系统的影响.
- 评估无脊椎动物生物量减少对六个关键生态系统服务的影响.
- 检查无脊椎动物社区生物量与生态系统多功能性之间的关系.
主要方法:
- 在一个受控的Ecotron设施中使用了实验性草原中层宇宙.
- 测试了三级地表无脊椎动物生物质 (100%,36%和0%的环境).
- 监测了30个地面和地下生态系统变量,以评估生态系统服务和功能.
主要成果:
- 无脊椎动物生物量减少 (36%的处理) 导致生态系统多功能性降低.
- 在地面上进行害虫控制和地下分解服务显著受损.
- 收获的植物生物量增加,这表明通过食物链的能量转移较少.
- 在较低的生物质水平下,无脊椎动物群落和生态系统功能变得脱.
结论:
- 无脊椎动物的丧失严重威胁草原的完整性.
- 无脊椎动物生物质的减少破坏了生态系统的基本过程.
- 减少的无脊椎动物生物量减少了重要的生态系统服务的供应,影响了草原的健康和功能.
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