Stable carbon isotope variations in surface bloom scum and subsurface seston among shallow eutrophic lakes
文献类型：期刊论文
| 作者 | Xu, Jun; Zhang, Min; Xie, Ping |
| 刊名 | HARMFUL ALGAE
 |
| 出版日期 | 2007-10-01 |
| 卷号 | 6期号:5页码:679-685 |
| 关键词 | bloom scum eutrophic lakes seston stable carbon isotope |
| ISSN号 | 1568-9883 |
| 通讯作者 | Xie, P, Chinese Acad Sci, Inst Hydrobiol, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China |
| 中文摘要 | Carbon stable isotope analysis of surface bloom scum and subsurface seston samples was conducted in shallow eutrophic lakes in China during warm seasons from 2003 to 2004. delta C-13 values of bloom scum were always higher (averaged 5 parts per thousand) than those of seston in this study, and the possible reasons were attributed to (i) direct use of atmospheric CO2 at the air-water interface, (ii) decrease in C-13 fractionation due to higher carbon fixation, (iii) active CO2 transport, and/or (iv) HCO3 accumulation. Negative correlation between delta C-13(scum) - delta C-13(seston) and pH in the test lakes indicated that phytoplankton at the subsurface water column increased isotopic enrichment under the-carbon limitation along with the increase of pH, which might in turn decreased the differences in 313 C between the subsurface seston and the surface scums. Significant positive correlations of seston 8 13C with total concentrations of nitrogen and phosphorus in water column suggested that the increase in delta C-13 of seston with trophic state was depending on nutrient (N or P, or both) supply. Our study showed that delta C-13 of phytoplankton was indicative of carbon utilization, primary productivity, and nutrient supply among the eutrophic lakes. (C) 2007 Elsevier B.V All rights reserved. |
| 英文摘要 | Carbon stable isotope analysis of surface bloom scum and subsurface seston samples was conducted in shallow eutrophic lakes in China during warm seasons from 2003 to 2004. delta C-13 values of bloom scum were always higher (averaged 5 parts per thousand) than those of seston in this study, and the possible reasons were attributed to (i) direct use of atmospheric CO2 at the air-water interface, (ii) decrease in C-13 fractionation due to higher carbon fixation, (iii) active CO2 transport, and/or (iv) HCO3 accumulation. Negative correlation between delta C-13(scum) - delta C-13(seston) and pH in the test lakes indicated that phytoplankton at the subsurface water column increased isotopic enrichment under the-carbon limitation along with the increase of pH, which might in turn decreased the differences in 313 C between the subsurface seston and the surface scums. Significant positive correlations of seston 8 13C with total concentrations of nitrogen and phosphorus in water column suggested that the increase in delta C-13 of seston with trophic state was depending on nutrient (N or P, or both) supply. Our study showed that delta C-13 of phytoplankton was indicative of carbon utilization, primary productivity, and nutrient supply among the eutrophic lakes. (C) 2007 Elsevier B.V All rights reserved. |
| 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] | PARTICULATE ORGANIC-MATTER ; WATER-BLOOMS ; FOOD-WEB ; NITROGEN ; PHYTOPLANKTON ; DELTA-C-13 ; DELTA-N-15 ; PRODUCTIVITY ; CO2 ; SIGNATURES |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000249681600007 |
| 公开日期 | 2010-10-13 |
| 源URL | [http://ir.ihb.ac.cn/handle/152342/8414]  |
| 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.Chinese Acad Sci, Inst Hydrobiol, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China 2.Huazhong Agr Univ, Coll Fisheries, Wuhan 430070, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Jun,Zhang, Min,Xie, Ping. Stable carbon isotope variations in surface bloom scum and subsurface seston among shallow eutrophic lakes[J]. HARMFUL ALGAE,2007,6(5):679-685. |
| APA | Xu, Jun,Zhang, Min,&Xie, Ping.(2007).Stable carbon isotope variations in surface bloom scum and subsurface seston among shallow eutrophic lakes.HARMFUL ALGAE,6(5),679-685. |
| MLA | Xu, Jun,et al."Stable carbon isotope variations in surface bloom scum and subsurface seston among shallow eutrophic lakes".HARMFUL ALGAE 6.5(2007):679-685. |
入库方式： OAI收割
来源：水生生物研究所
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