SEASONAL REGIME SHIFT OF AN ALTERNATIVE-STATE LAKE XINGYUN, CHINA
文献类型：期刊论文
| 作者 | Wang, Yingcai1,2; Wang, Zhicong1; Wu, Weiju1; Hu, Mingming1; Wang, Zhen1; Xu, Aihua1; Li, Genbao1; Liu, Yongding1 |
| 刊名 | FRESENIUS ENVIRONMENTAL BULLETIN
 |
| 出版日期 | 2010 |
| 卷号 | 19期号:8页码:1474-1485 |
| 关键词 | alternative states phytoplankton population threshold concentration regime shift driving force |
| ISSN号 | 1018-4619 |
| 通讯作者 | Liu, YD, Chinese Acad Sci, Inst Hydrobiol, 7 S Donghu Rd, Wuhan 430072, Hubei Province, Peoples R China |
| 中文摘要 | For a natural lake, there are usually two stable states, a clean state and a turbid state. However, there exists an alternative state, which is unstable and can shift to either a clean or a turbid state depending on varied environmental factors. In this paper, we report a lake undergoing a pattern of seasonal shifting. We found that Lake Xingyun appeared clean in winter with low level of nutrients, low Chlorophyll a (Chl-a) and high secchi depth (SD). However, during summer, the lake turned into turbid with higher level of nutrients and Chl-a, but lower SD. In close response to environmental changes, phytoplankton population of the lake also adopted a pattern of seasonal shift. The order of the seasonal appearances of the dominant populations was as follows: Cyanophyta and Cryptophyta in spring, Microcystis in summer, Melosira in autumn, and Chlorophyta in winter. Our data clearly indicate that Lake Xingyun stayed in clean state in winter but became turbid in summer, and 0.07-0.135mg/L can be considered as the total phosphorus (TP) threshold concentration for Lake Xingyun's alternation between those two states. We also found that both TP and water temperature were the major factors influencing the phytoplankton biomass and its succession. In addition, wind also played a significant role in promoting the dominance of Chlorophyta in winter. In conclusion, Lake Xingyun, represents an alternative state lake with a certain nutrient level, can undergo a seasonal regime shift. Temperature change is the primary force that drives Lake Xingyun to shift its regime state. |
| 英文摘要 | For a natural lake, there are usually two stable states, a clean state and a turbid state. However, there exists an alternative state, which is unstable and can shift to either a clean or a turbid state depending on varied environmental factors. In this paper, we report a lake undergoing a pattern of seasonal shifting. We found that Lake Xingyun appeared clean in winter with low level of nutrients, low Chlorophyll a (Chl-a) and high secchi depth (SD). However, during summer, the lake turned into turbid with higher level of nutrients and Chl-a, but lower SD. In close response to environmental changes, phytoplankton population of the lake also adopted a pattern of seasonal shift. The order of the seasonal appearances of the dominant populations was as follows: Cyanophyta and Cryptophyta in spring, Microcystis in summer, Melosira in autumn, and Chlorophyta in winter. Our data clearly indicate that Lake Xingyun stayed in clean state in winter but became turbid in summer, and 0.07-0.135mg/L can be considered as the total phosphorus (TP) threshold concentration for Lake Xingyun's alternation between those two states. We also found that both TP and water temperature were the major factors influencing the phytoplankton biomass and its succession. In addition, wind also played a significant role in promoting the dominance of Chlorophyta in winter. In conclusion, Lake Xingyun, represents an alternative state lake with a certain nutrient level, can undergo a seasonal regime shift. Temperature change is the primary force that drives Lake Xingyun to shift its regime state. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 学科主题 | Environmental Sciences |
| 类目[WOS] | Environmental Sciences |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| 关键词[WOS] | SHALLOW EUTROPHIC LAKE ; PHYTOPLANKTON SUCCESSION ; PHOSPHORUS ; NUTRIENT ; ZOOPLANKTON ; TEMPERATURE ; DYNAMICS ; CLIMATE ; MECHANISMS ; RESPONSES |
| 收录类别 | SCI |
| 资助信息 | 973 project [2008ZX07106]; State major science and technology special projects [2008ZX07105-006, 2008ZX07102-005] |
| 语种 | 英语 |
| WOS记录号 | WOS:000281051200011 |
| 公开日期 | 2010-12-23 |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/13689]  |
| 专题 | 水生生物研究所_水环境工程研究中心_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei Province, Peoples R China 2.Yangtze Valley Water Environm Monitoring Ctr, Wuhan 430010, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Yingcai,Wang, Zhicong,Wu, Weiju,et al. SEASONAL REGIME SHIFT OF AN ALTERNATIVE-STATE LAKE XINGYUN, CHINA[J]. FRESENIUS ENVIRONMENTAL BULLETIN,2010,19(8):1474-1485. |
| APA | Wang, Yingcai.,Wang, Zhicong.,Wu, Weiju.,Hu, Mingming.,Wang, Zhen.,...&Liu, Yongding.(2010).SEASONAL REGIME SHIFT OF AN ALTERNATIVE-STATE LAKE XINGYUN, CHINA.FRESENIUS ENVIRONMENTAL BULLETIN,19(8),1474-1485. |
| MLA | Wang, Yingcai,et al."SEASONAL REGIME SHIFT OF AN ALTERNATIVE-STATE LAKE XINGYUN, CHINA".FRESENIUS ENVIRONMENTAL BULLETIN 19.8(2010):1474-1485. |
入库方式： OAI收割
来源：水生生物研究所
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