长江流域资源与环境 >> 2012, Vol. 21 >> Issue (11): 1330-.

• 自然资源 • 上一篇    下一篇

江西赣江中下游淡水双壳类分布与丰度

肖晋志| 刘息冕| 刘益搏| 徐亮| 欧阳珊| 陈家宽| 雷光春| 吴小平   

  1. (1.南昌大学生命科学研究院流域生态学研究所|江西 南昌 330031; 2.北京林业大学自然保护区学院|北京100083)
  • 出版日期:2012-11-20

DISTRIBUTION AND ABUNDANCE OF FRESHWATER MUSSELS ALONG THE MIDDLE AND LOWER REACHES OF THE GANJIANG RIVER, JIANGXI

XIAO Jinzhi1|LIU Ximian1| LIU Yibo1|XU Liang1|OUYANG Shan1|CHEN Jiakuan1|LEI Guangchun2| WU Xiaoping1   

  1. (1. Institute of Life Science, Nanchang University, Nanchang 330031, China;2. College of Nature Conservation|Beijing Forestry University, Beijing 100083, China
  • Online:2012-11-20

摘要:

淡水双壳类是淡水生物群落的重要组成部分,在河流等生态系统中有重要功能。2010年11月至2011年2月对江西赣江中下游淡水双壳类的种类、分布及丰度进行了调查,共采集到双壳类34 种及亚种,隶属3科14 属。中游双壳类有8种,优势种为圆顶珠蚌和河蚬;下游干流有34种,优势种为圆顶珠蚌、河蚬、洞穴丽蚌和中国尖嵴蚌。赣江中游、下游干流双壳类的平均密度和生物量分别为64±91 ind./m2、210±254 g/m2,267±441 ind./m2、2123±3148 g/m2。从赣江中游到下游干流双壳类物种多样性、密度和生物量均呈现增加的趋势

Abstract:

Freshwater bivalve is a main group of freshwater community and plays important roles in freshwater ecosystems.An investigation on distribution and abundance of freshwater bivalve along the middle and lower reaches of the Ganjiang River was carried out by using quantitative and qualitative methods from November 2010 to February 2011.A total of 34 species and subspecies belonging to 14 genera,3 families were recorded.Only 8 species were found in the middle reaches of the Ganjiang River,and the species U.douglasiae,L.caveata and C.fluminea were the dominant species.All the 34 species inhabited in the lower reaches of the Ganjiang River,with the dominant species U.douglasiae,C.fluminea,A.chinensis,and L.caveata.The mean density and biomass of freshwater bivalves in the middle reach and lower reach of Ganjing River were 64±91 ind./m2,210±254 g/m2 and 267±441 ind./m2,2123±3148 g/m2,respectively.The results showed that species number,density and biomass of freshwater bivalve had an obvious decline along the longitude of middle and lower reaches of the Ganjiang River

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