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论文题目: The dynamics of cladoceran assemblages in response to eutrophication and planktivorousfish introduction in Lake Chenghai, a plateau saline lake
课题编号: 2012CB956104 类别: SCI
作者: Guimin Liu, Zhengwen Liu, Joseph M.Smoak, Binhe Gu SCI期刊区属:
杂志名称: Quaternary International 卷期:
年份: 2014 是否责任作者:
页码: 标注:
作者单位: 中国科学院南京地理与湖泊研究所 下载:
摘要
Lake Chenghai, a brackish lake located in southwest China, has changed from oligotrophic to mesotrophic and finally eutrophic conditions since the 1990s. In the late 1990s, planktivorous icefish were introduced into the lake, which dramatically altered the fish population. A paleolimnological evaluation using the cladoceran remains was conducted in order to analyze the effects of increasing nutrient load and fish introduction on the cladoceran community of this lake. Our results showed that the dominant cladocerans were littoral species, with a low abundance of planktonic Bosmina in the sediment. Increasing eutrophication since the late 1990s greatly enhanced the abundance of cladoceran assemblages, especially for the species that prefer eutrophic conditions. Meanwhile, the species which prefer oligotrophic conditions were extirpated. The changes in Daphnia ephippium length suggested that the planktivorous icefish have varying effects on the body size of different species.
 
Copyright (C) 2012 版权所有:湖泊与湿地生态系统对全球变化的响应及生态恢复对策研究
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