湖泊科学2019，Vol.31Issue(2)：469-481,13.DOI:10.18307/2019.0216
高坝对乌江下游底栖动物群落结构的影响
Effects of high-head dams on macroinvertebrate communities in the lower reaches of Wujiang River
摘要
Abstract
Based on the long-term monitoring data in the lower reaches of Wujiang River during 2006-2016, the effects of two high-head dams on macroinvertebrate communities were explored. Our results showed that the communities changed significantly before and after impoundment. Mayflies could not adapt to the drastic changes in habitats but some taxa from the families Viviparidae and Hydrobiidae could adapt to it. The opportunistic species with short life cycles colonized in the inundation areas of reservoirs and the river reaches below dams. Dam construction and operation had strong impacts on the macroinvertebrate communities, resulting in the community succession at a certain degree. Among the main groups, mollusks and crustaceans were tolerant to the drastic flow fluctuations and the loss of habitat, but aquatic insects were not tolerant to it. Our results showed the change trends of PMA (Percent Model Affinity) could effectively reflect the dam effects on macroinvertebrate communities. The average scores of PMA increased with the distance to dams, suggesting the negative effects induced by dam construction and operation were gradually weaken with the increase of distance, it was consistent with the prediction of serial discontinuity concept (SDC) . According to the longterm monitoring results, the population dynamics and restoration status of the families Heptageniidae, Baetidae, Leptophlebiidae and Hydropsychidae, and the biological index PMA could be used to evaluate the mitigation measures against the adverse effects induced by dam construction and operation in future.关键词
底栖动物/群落结构/高坝/不连续体理论/演替/乌江Key words
Macroinvertebrates/communities/high-head dam/serial discontinuity concept/succession/Wujiang River引用本文复制引用
池仕运,陈胜,李嗣新,汪红军,周连凤,赵先富,郑金秀,胡俊,胡菊香..高坝对乌江下游底栖动物群落结构的影响[J].湖泊科学,2019,31(2):469-481,13.基金项目
国家自然科学基金项目(51409178) （51409178）
国家重点基础研究发展计划专项(2017YFC0405303) （2017YFC0405303）
典型大城市水库水源地水环境质量评估项目(KFJ-SW-YW036)联合资助 （KFJ-SW-YW036）
