Relative Changes in Krill Abundance Inferred from Antarctic Fur Seal
文献类型：期刊论文
| 作者 | Huang, Tao1; Sun, Liguang1; Stark, John2,3; Wang, Yuhong1,4; Cheng, Zhongqi5; Yang, Qichao1; Sun, Song4
|
| 刊名 | PLOS ONE
 |
| 出版日期 | 2011-11-07 |
| 卷号 | 6期号:11 |
| 英文摘要 | Antarctic krill Euphausia superba is a predominant species in the Southern Ocean, it is very sensitive to climate change, and it supports large stocks of fishes, seabirds, seals and whales in Antarctic marine ecosystems. Modern krill stocks have been estimated directly by net hauls and acoustic surveys; the historical krill density especially the long-term one in the Southern Ocean, however, is unknown. Here we inferred the relative krill population changes along the West Antarctic Peninsula (WAP) over the 20th century from the trophic level change of Antarctic fur seal Arctocephalus gazella using stable carbon (delta C-13) and nitrogen (delta N-15) isotopes of archival seal hairs. Since Antarctic fur seals feed preferentially on krill, the variation of delta N-15 in seal hair indicates a change in the proportion of krill in the seal's diets and thus the krill availability in local seawater. For the past century, enriching fur seal delta N-15 values indicated decreasing krill availability. This is agreement with direct observation for the past similar to 30 years and suggests that the recently documented decline in krill populations began in the early parts of the 20th century. This novel method makes it possible to infer past krill population changes from ancient tissues of krill predators. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000297347700042 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/32943]  |
| 专题 | 海洋研究所_海洋生态与环境科学重点实验室 |
| 作者单位 | 1.Univ Sci & Technol China, Inst Polar Environm, Sch Earth & Space Sci, Hefei 230026, Peoples R China 2.Utah State Univ, Dept Biol, Logan, UT 84322 USA 3.Utah State Univ, Ctr Ecol, Logan, UT 84322 USA 4.Chinese Acad Sci, Inst Oceanol, Qingdao, Peoples R China 5.CUNY Brooklyn Coll, Brooklyn, NY 11210 USA |
| 推荐引用方式 GB/T 7714 | Huang, Tao,Sun, Liguang,Stark, John,et al. Relative Changes in Krill Abundance Inferred from Antarctic Fur Seal[J]. PLOS ONE,2011,6(11). |
| APA | Huang, Tao.,Sun, Liguang.,Stark, John.,Wang, Yuhong.,Cheng, Zhongqi.,...&Sun, Song.(2011).Relative Changes in Krill Abundance Inferred from Antarctic Fur Seal.PLOS ONE,6(11). |
| MLA | Huang, Tao,et al."Relative Changes in Krill Abundance Inferred from Antarctic Fur Seal".PLOS ONE 6.11(2011). |
入库方式： OAI收割
来源：海洋研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。