Ambiguous influences of omnivorous fish on trophic cascade and alternative states: Implications for biomanipulation from an ecological model
Li, Junmin; Huang, Ping; Zhao, Zhuangming; Zhang, Renduo; jli@scsio.ac.cn
2015
发表期刊AQUATIC ECOSYSTEM HEALTH & MANAGEMENT
卷号18期号:1页码:105-113
摘要An ecological model was developed to systematically analyze the comprehensive influence of omnivory level and predation intensity of fish on the dynamic state and strength of trophic cascade of a lake ecosystem. Results showed that a higher fish omnivory level reduced the strength of trophic cascade and increased the occurrence of alternative states, while an increase in predation intensity resulted in opposite effects. With the combination of these two factors, the occurrence of alternative states was dependent on the relative increase in the predation intensity. The model was further applied to a subtropical shallow lake in China. Modeling results revealed that the heavy stock of omnivorous fish in the lake increased the occurrence of alternative states and decreased the strength of trophic cascade. Results indicated that the long-term effect of biomanipulation would be significant and therefore high rates of fish removal would be required. The information from this study indicated the importance of understanding the dynamic state and strength of trophic cascade when predicting the long-term effects of biomanipulation.
部门归属[Li, Junmin] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China; [Li, Junmin; Huang, Ping; Zhang, Renduo] Sun Yat Sen Univ, Sch Environm Sci & Engn, Dept Environm Sci, Guangzhou 510275, Guangdong, Peoples R China; [Zhao, Zhuangming] South China Inst Environm Sci, Minist Environm Protect PR China, Guangzhou 510655, Guangdong, Peoples R China ; LTO
关键词Omnivory Asian Carp Predation Intensity Dynamic State Comprehensive Aquatic Simulation Model
学科领域Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/15012
专题热带海洋环境国家重点实验室(LTO)
通讯作者jli@scsio.ac.cn
推荐引用方式
GB/T 7714
Li, Junmin,Huang, Ping,Zhao, Zhuangming,et al. Ambiguous influences of omnivorous fish on trophic cascade and alternative states: Implications for biomanipulation from an ecological model[J]. AQUATIC ECOSYSTEM HEALTH & MANAGEMENT,2015,18(1):105-113.
APA Li, Junmin,Huang, Ping,Zhao, Zhuangming,Zhang, Renduo,&jli@scsio.ac.cn.(2015).Ambiguous influences of omnivorous fish on trophic cascade and alternative states: Implications for biomanipulation from an ecological model.AQUATIC ECOSYSTEM HEALTH & MANAGEMENT,18(1),105-113.
MLA Li, Junmin,et al."Ambiguous influences of omnivorous fish on trophic cascade and alternative states: Implications for biomanipulation from an ecological model".AQUATIC ECOSYSTEM HEALTH & MANAGEMENT 18.1(2015):105-113.
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