IOCAS-IR  > 海洋生态与环境科学重点实验室
Relative Changes in Krill Abundance Inferred from Antarctic Fur Seal
Huang, Tao1; Sun, Liguang1; Stark, John2,3; Wang, Yuhong1,4; Cheng, Zhongqi5; Yang, Qichao1; Sun, Song4
2011-11-07
Source PublicationPLOS ONE
Volume6Issue:11
SubtypeArticle
AbstractAntarctic 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.
DOI10.1371/journal.pone.0027331
Indexed BySCI
Language英语
WOS IDWOS:000297347700042
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/32943
Collection海洋生态与环境科学重点实验室
Affiliation1.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
Recommended Citation
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).
Files in This Item:
File Name/Size DocType Version Access License
Relative Changes in (252KB)期刊论文出版稿开放获取ODC PDDLView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Huang, Tao]'s Articles
[Sun, Liguang]'s Articles
[Stark, John]'s Articles
Baidu academic
Similar articles in Baidu academic
[Huang, Tao]'s Articles
[Sun, Liguang]'s Articles
[Stark, John]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Huang, Tao]'s Articles
[Sun, Liguang]'s Articles
[Stark, John]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Relative Changes in Krill Abundance Inferred from Antarctic Fur Seal.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.