摘要
抚仙湖现有外来鱼类26种,1995年以来增加了12种,外来鱼类在种类和数量上已经占据了优势。外来鱼类的引入途径和数量在不断增加,不仅改变了抚仙湖原有的鱼类区系组成,对土著鱼类产生了负面影响,而且通过"下行效应"产生了一些连锁的生态效应。在此基础上提出了云南湖泊外来鱼类入侵的防治对策。
There were 26 alien fishes in Fuxian Lake and 12 species had been introduced since 1995, and they had dominace in species and population. Introducing approaches and species of alien fishes increased greatly, which led to the changes in fish fauna and negative effects on indigenous fishes, further caused ecological effects through “top -down effects”. At last some countermeasures against alien fish invasion in lakes in Yurman province were brought out.
出处
《江西农业学报》
CAS
2008年第2期92-94,96,共4页
Acta Agriculturae Jiangxi
基金
中国科学院南京地理与湖泊研究所知识创新工程前沿项目(CXNIGLAS-A01)
江汉大学博士科研启动课题
关键词
外来鱼类
生态效应
抚仙湖
Alien fishes
Ecological effect
Fuxian Lake
