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	Effect of streambed substrate on macroinvertebrate biodiversity
	Xuehua Duan ; Zhaoyin Wang ; Shimin Tian
	2010-10-12 ; 2010-10-12
关键词	Experimental/ ecology environmental factors rivers sediments zoology/ streambed substrate effects macroinvertebrate biodiversity stream ecosystems indicator species river ecology assessment grain size grain shape grain roughness macroinvertebrate composition Juma river second order mountain stream northern China cobbles hewn stones pebbles coarse sand sand were gravel-sand bed size 30 m/ A8670Z Other topics in environmental science A8670C Soil and rock (environmental science) A8670E Water (environmental science) A9240G Erosion and sedimentation (hydrological) A9240F Rivers, runoff, and streamflow A9330D Asia/ size 3.0E+01 m
中文摘要	Macroinvertebrates are important components of stream ecosystems, and are often used as indicator species for the assessment of river ecology. Numerous studies have shown that substrate is the primary physical environmental variable affecting the taxa richness and density of macroinvertebrates. The aim of this work is to study the effects of the characteristics of streambed substrate, such as grain size, shape, and roughness, on the composition and biodiversity of macroinvertebrates. A field experiment was done on the Juma River, a second-order mountain stream in northern China. Substrata of cobbles, hewn stones, pebbles, coarse sand, and fine sand were used to replace the original gravel and sand bed in a stretch of 30 m in length. The sampling results indicated that the macroinvertebrate assemblage is significantly affected by the grain size, porosity and interstitial dimension of the substrate, while it is rarely affected by the shape and the surface roughness of the experimental substrata. Macroinvertebrate compositions in cobbles and hewn stones were stable and changed least over time. The taxa richness and density of individuals in the substrata of cobbles, hewn stones, and pebbles are much higher than in those of the coarse sand and fine sand.
语种	英语
出版者	Springer Verlag ; Germany
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/82009]
专题	清华大学
推荐引用方式 GB/T 7714	Xuehua Duan,Zhaoyin Wang,Shimin Tian. Effect of streambed substrate on macroinvertebrate biodiversity[J],2010, 2010.
APA	Xuehua Duan,Zhaoyin Wang,&Shimin Tian.(2010).Effect of streambed substrate on macroinvertebrate biodiversity..
MLA	Xuehua Duan,et al."Effect of streambed substrate on macroinvertebrate biodiversity".(2010).

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