Temporal variation of energy sources in a floodplain lake fish community
文献类型：SCI/SSCI论文
| 作者 | Xu J. |
| 发表日期 | 2012 |
| 关键词 | food web stable isotopes water-level fluctuation energetic sources herbivore Lake Poyang food-web structure stable-isotopes poyang-lake river carbon shifts china |
| 英文摘要 | We compared the stable isotope ratios of delta C-13 and delta N-15 of four basal food sources and eight fish species collected in spring and summer from the largest freshwater lake in China, Lake Poyang. The aim was to study the temporal variations in the fishes' energy sources. The delta C-13 and delta N-15 ratios of all eight species of fish were higher in summer. Employing the IsoSource mixing model, we identified that the terrestrial plant Carex spp. was the most important primary producer supporting fish biomass in spring when the water level was low; meanwhile, the submerged macrophyte Potamogeton malaianus made consistent contributions to fish. However, in summer, when the water level was high, the submerged macrophyte Ceratophyllum demersum was the most important primary production source for fish. Our study indicated that feeding links in floodplain lakes are complex and modified by hydrologic seasonality. |
| 出处 | Journal of Freshwater Ecology |
| 卷 | 27 |
| 期 | 2 |
| 页 | 295-303 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0270-5060 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/26756]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Xu J.. Temporal variation of energy sources in a floodplain lake fish community. 2012. |
入库方式： OAI收割
来源：地理科学与资源研究所
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