香溪河流域梯级水库大型底栖动物群落变化及其与环境的关系
Changes of macrobenthos community and their relationships with environmental factors along cascading reservoirs of Xiangxi River Basin, China
查看参考文献37篇
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文摘
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分别于2005年10月和2011年10月对香溪河流域3个梯级水库的大型底栖动物群落进行了调查,探讨了大型底栖动物群落变化及其与环境的关系。结果表明:与2005年相比,2011年古洞口一级水库仍以寡毛类占优势,大型底栖动物总密度升高;古洞口二级水库中,摇蚊的优势度降低,前突摇蚊相对丰度由94.5%降低至35.5%,霍甫水丝蚓的相对丰度升至36.0%,总密度增加;香溪河库湾大型底栖动物群落发生很大变化,前突摇蚊取代颤蚓科种类成为绝对优势类群,相对丰度达到89.0%,而总密度降低,三峡水库水位剧烈波动对这一变化有推动作用。各水库大型底栖动物群落与环境因子的典型对应分析(CCA)结果表明,浊度较大的水体,前突摇蚊容易占优势,而颤蚓科的霍甫水丝蚓和正颤蚓则在水柱稳定性较高、底层水温较低的水体中更易占优势。 |
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其他语种文摘
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An investigation was made on the macrobenthos communities in three cascading reservoirs in Xiangxi River Basin in October, 2005 and 2011, respectively, aimed to explore the changes of the macrobenthos communities and their relationships with the environment. As compared with that in 2005, the macrobenthos community in the three reservoirs in 2011 changed to some extent. In Gudongkou Reservoir I, Oligochaeta was still dominant, and the total macrobenthos density increased. In Gudongkou Reservoir Ⅱ, the dominance degree of Chironomidae descended, while the total macrobenthos density ascended. Meanwhile, the relative abundance of Procladius sp. declined dramatically from 94.5% to 35.5%, while that of Limnodrilus hoffmeisteri increased to 36%. The macrobenthos community in Xiangxi Bay had great change. Since Chironomidae replaced Tubificidae as the absolutely preponderant species, the relative abundance of Chironomidae reached 89%, but the total macrobenthos density decreased. These changes were attributed to the drastic water level fluctuation of the Three-Gorges Reservoir. The canonical correspondence analysis (CCA) on the relationships between the macrobenthos community and environmental factors in the three reservoirs showed that Procladius sp. preferred the waters with higher turbidity, while Limnodrilus hoffmeisteri and Tubifex tubifex preferred the waters with higher water column stability and lower bottom water temperature. |
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来源
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生态学杂志
,2013,32(8):2070-2076 【核心库】
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关键词
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香溪河库湾
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水位波动
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三峡水库
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群落排序
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地址
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中国科学院水生生物研究所, 淡水生态与生物技术国家重点实验室, 武汉, 430072
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长江-水资源保护科学研究所, 武汉, 430051
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安徽师范大学生命科学学院, 安徽, 芜湖, 241000
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-4890 |
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学科
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环境质量评价与环境监测 |
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基金
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国家重大科技专项
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文献收藏号
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CSCD:4919294
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