Vertical mixing within the epilimnion modulates UVR-induced photoinhibition in tropical freshwater phytoplankton from southern China
文献类型：期刊论文
| 作者 | Villafane, Virginia E.; Gao, Kunshan; Li, Ping; Li, Gang; Helbling, E. Walter |
| 刊名 | FRESHWATER BIOLOGY
 |
| 出版日期 | 2007-07-01 |
| 卷号 | 52期号:7页码:1260-1270 |
| 关键词 | mixing photosynthesis photosynthetically available radiation phytoplankton ultraviolet radiation |
| ISSN号 | 0046-5070 |
| 通讯作者 | Villafane, VE, Estac Fotobiol, Playa Union,Casilla Correo 15, RA-9103 Rawson, Chubut, Argentina |
| 中文摘要 | 1. The importance of vertical mixing in modulating the impact of UVR on phytoplankton photosynthesis was assessed in a tropical, shallow lake in southern China from late winter to mid-spring of 2005. 2. Daily cycles of fluorescence measurements (i.e. photosynthetic quantum yield, Y) were performed on both 'static' and in situ samples. Static samples were of surface water incubated at the surface of the lake under three radiation treatments - PAB (PAR + UVR, 280-700 nm), PA (PAR + UV-A, 320-700 nm) and P (PAR, 400-700 nm). In situ samples were collected every hour at three different depths - 0, 0.5 and 1 m. 3. The general daily pattern was of a significant decrease in Y from early morning towards noon, with partial recovery in the afternoon. Samples incubated under static conditions always had lower Y than those under in situ conditions at the same time of the day. 4. Under stratified conditions, no overall impact of UVR impact could be detected in situ when compared with the static samples. Further rapid vertical mixing not only counteracted the impact of UVR but also stimulated photosynthetic efficiency. 5. Based on these measurements of fluorescence, the mixing speed of cells moving within the epilimnion was estimated to range between 0.53 and 6.5 cm min(-1). 6. These data show that mixing is very important in modulating the photosynthetic response of phytoplankton exposed to natural radiation and, hence, strongly conditions the overall impact of UVR on aquatic ecosystems. |
| 英文摘要 | 1. The importance of vertical mixing in modulating the impact of UVR on phytoplankton photosynthesis was assessed in a tropical, shallow lake in southern China from late winter to mid-spring of 2005. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 学科主题 | Marine & Freshwater Biology |
| 类目[WOS] | Marine & Freshwater Biology |
| 研究领域[WOS] | Marine & Freshwater Biology |
| 关键词[WOS] | SOLAR ULTRAVIOLET-RADIATION ; TEMPERATE MARINE-PHYTOPLANKTON ; COASTAL PHYTOPLANKTON ; ARTHROSPIRA-PLATENSIS ; CHLOROPHYLL-A ; PHOTOSYNTHESIS ; ARGENTINA ; EXPOSURE ; IMPACT ; FLUORESCENCE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000247127200007 |
| 公开日期 | 2010-10-13 |
| 源URL | [http://ir.ihb.ac.cn/handle/152342/8564]  |
| 专题 | 水生生物研究所_中科院水生所知识产出（2009年前）_期刊论文 |
| 作者单位 | 1.Estac Fotobiol, RA-9103 Rawson, Chubut, Argentina 2.Consejo Nacl Invest Cient & Tecn, RA-9103 Rawson, Chubut, Argentina 3.Shantou Univ, Marine Biol Inst, Guangdong 515063, Peoples R China 4.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Villafane, Virginia E.,Gao, Kunshan,Li, Ping,et al. Vertical mixing within the epilimnion modulates UVR-induced photoinhibition in tropical freshwater phytoplankton from southern China[J]. FRESHWATER BIOLOGY,2007,52(7):1260-1270. |
| APA | Villafane, Virginia E.,Gao, Kunshan,Li, Ping,Li, Gang,&Helbling, E. Walter.(2007).Vertical mixing within the epilimnion modulates UVR-induced photoinhibition in tropical freshwater phytoplankton from southern China.FRESHWATER BIOLOGY,52(7),1260-1270. |
| MLA | Villafane, Virginia E.,et al."Vertical mixing within the epilimnion modulates UVR-induced photoinhibition in tropical freshwater phytoplankton from southern China".FRESHWATER BIOLOGY 52.7(2007):1260-1270. |
入库方式： OAI收割
来源：水生生物研究所
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