期刊
WATER
卷 14, 期 8, 页码 -出版社
MDPI
DOI: 10.3390/w14081298
关键词
macroinvertebrate; grazing; hot spring; mine development; glacier-fed stream
资金
- National Natural Science Foundation of China [31860139, 32071587]
- Scientific and Technological Aid Project of Science and Technology Department of Xinjiang Uygur Autonomous Region [2018E02095]
- Program of Introducing Talents of Discipline to Universities [B16011]
Human activities have negative effects on macroinvertebrate community structures and functional traits in glacier-fed streams, including decreased species richness and density due to grazing, reduced EPT richness and density caused by hot spring scenic development, and hindered dispersal of macroinvertebrates due to historic mine development.
Macroinvertebrates are sensitive to environmental disturbances, however, the effects of human activities on macroinvertebrate community structures and functional traits in glacier-fed streams are concerning. To elucidate the effects of horse, cattle and sheep grazing, hot spring scenic development, and historic iron ore mine development on macroinvertebrate communities, we conducted a study in three glacier-fed streams of the Tianshan Mountains in northwest China in April 2021. Our results showed that the species richness and density significantly decreased due to grazing (p < 0.05). There were more taxa with resilience traits such as small size at maturity in the grazing stream. The EPT richness and density affected by hot spring scenic development significantly decreased compared to the undisturbed point (p < 0.05). There was a significant increase in taxa with resistance traits such as bi-or-multivoltine in the hot spring stream. The stream affected by historic mine development is currently in the self-recovery stage following the closure of the mine ten years ago. Additionally, the species richness, EPT richness, and density at the mining site were significantly higher than the source site (p < 0.05), reflecting that the habitat fragmentation caused by previous mining activities prevented the upward dispersal of macroinvertebrates. The taxa in the mining stream were also characterized by higher resistance traits such as abundant occurrence in drift. These results were attributed to the impacts of human disturbance on habitat stability, habitat heterogeneity, water quality, and material cycling of stream ecosystems, indicating human disturbance on the efficiency of resource utilization and functional diversification. In addition, our results showed that functional indicators of macroinvertebrate communities are helpful for monitoring and evaluating habitat conditions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据