| Status and historical changes in the fish community in Erhai Lake | |
| Tang Jianfeng1,2; Ye Shaowen1; Li Wei1; Liu Jiashou1; Zhang Tanglin1; Guo Zhiqiang1,2,3; Zhu Fengyue1,2; Li Zhongjie1 | |
| 刊名 | CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
 |
| 2013-07-01 | |
| 卷号 | 31期号:4页码:712-723 |
| 关键词 | Erhai Lake fish community small fishes indigenous fish species exotic fish species |
| ISSN号 | 0254-4059 |
| 通讯作者 | Li, ZJ (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China. |
| 中文摘要 | Erhai Lake is the second largest freshwater lake on the Yunnan Plateau, Southwest China. In recent decades, a number of exotic fish species have been introduced into the lake and the fish community has changed considerably. We evaluated the status of the fish community based on surveys with multimesh gillnet, trap net, and benthic fyke-net between May 2009 and April 2012. In addition, we evaluated the change in the community using historical data (1952-2010) describing the fish community and fishery harvest. The current fish community is dominated by small-sized fishes, including Pseudorasbora parva, Rhinogobius giurinus, Micropercops swinhonis, Hemiculter leucisculus, and Rhinogobius cliffordpopei. These accounted for 87.7% of the 22 546 total specimens collected. Omnivorous and carnivorous species dominated the community. A canonical correspondence analysis (CCA) plot revealed that the distribution of fishes in the lake is influenced by aquatic plants, water temperature, pH, and season. The abundance of indigenous species has declined sharply, and a majority of endemic species have been extirpated from the lake (a decrease from seven to two species). In contrast, the number of exotic species has increased since the 1960s to a total of 22 at present. The fishery harvest decreased initially following the 1960s, but has since increased due to the introduction of non-native fish and stocking of native fish. The fishery harvest was significantly correlated with total nitrogen, not total phosphorus, during the past 20 years. Based on our results, we discuss recommendations for the restoration and conservation of the fish resources in Erhai Lake. |
| 英文摘要 | Erhai Lake is the second largest freshwater lake on the Yunnan Plateau, Southwest China. In recent decades, a number of exotic fish species have been introduced into the lake and the fish community has changed considerably. We evaluated the status of the fish community based on surveys with multimesh gillnet, trap net, and benthic fyke-net between May 2009 and April 2012. In addition, we evaluated the change in the community using historical data (1952-2010) describing the fish community and fishery harvest. The current fish community is dominated by small-sized fishes, including Pseudorasbora parva, Rhinogobius giurinus, Micropercops swinhonis, Hemiculter leucisculus, and Rhinogobius cliffordpopei. These accounted for 87.7% of the 22 546 total specimens collected. Omnivorous and carnivorous species dominated the community. A canonical correspondence analysis (CCA) plot revealed that the distribution of fishes in the lake is influenced by aquatic plants, water temperature, pH, and season. The abundance of indigenous species has declined sharply, and a majority of endemic species have been extirpated from the lake (a decrease from seven to two species). In contrast, the number of exotic species has increased since the 1960s to a total of 22 at present. The fishery harvest decreased initially following the 1960s, but has since increased due to the introduction of non-native fish and stocking of native fish. The fishery harvest was significantly correlated with total nitrogen, not total phosphorus, during the past 20 years. Based on our results, we discuss recommendations for the restoration and conservation of the fish resources in Erhai Lake. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
| 类目[WOS] | Limnology ; Oceanography |
| 研究领域[WOS] | Marine & Freshwater Biology ; Oceanography |
| 关键词[WOS] | INVASIVE CARP ; BIODIVERSITY ; YUNNAN ; CHINA ; RESOURCES ; PLATEAU ; RIVER |
| 收录类别 | SCI |
| 资助信息 | National Special Research Fund for Non-Profit Sector (Agriculture) [200903048-04]; Major Science and Technology Program for Water Pollution Control and Treatment of China [2012ZX07105-004]; State Key Program of National Natural Science Foundation of China [30830025] |
| 语种 | 英语 |
| WOS记录号 | WOS:000321629400002 |
| 公开日期 | 2014-01-03 |
| 内容类型 | 期刊论文 |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/19554]  |
| 专题 | 水生生物研究所_淡水生态学研究中心_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ Toulouse, UPS, EDB UMR5174, F-31062 Toulouse, France |
| 推荐引用方式 GB/T 7714 | Tang Jianfeng,Ye Shaowen,Li Wei,et al. Status and historical changes in the fish community in Erhai Lake[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2013,31(4):712-723. |
| APA | Tang Jianfeng.,Ye Shaowen.,Li Wei.,Liu Jiashou.,Zhang Tanglin.,...&Li Zhongjie.(2013).Status and historical changes in the fish community in Erhai Lake.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,31(4),712-723. |
| MLA | Tang Jianfeng,et al."Status and historical changes in the fish community in Erhai Lake".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 31.4(2013):712-723. |
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