下载此文档

widening spatio-temporal variability in the krill population structure across the scotia sea开题资料.pdf


文档分类:医学/心理学 | 页数:约13页 举报非法文档有奖
1/13
下载提示
  • 1.该资料是网友上传的,本站提供全文预览,预览什么样,下载就什么样。
  • 2.下载该文档所得收入归上传者、原创者。
  • 3.下载的文档,不会出现我们的网址水印。
1/13 下载此文档
文档列表 文档介绍
: .
r seal diets had a modal size class of 52 mm when sampled simultaneously;
however, krill in the diet of seals showed a decline in size later in the season with an overall mode of 48 mm. At Bird
Island, South Georgia, there was little overlap between net samples, with a modal size class of 30–40 mm, and fur seal
diets, with distinct modes of 44 and 54 mm; and there was also much greater spatial variability in the size of krill in these
net samples than in those from the other two locations. Extending the comparison of krill size in the diet of seals, to
include spatially congruent net samples collected immediately prior to the CCAMLR 2000 Survey, showed almost
complete overlap and indicated an even greater spatial variability in the krill population structure at South Georgia.
Interactions between the oceanographic transport and enhanced growth rates of krill at South Georgia may combine to
produce a higher degree of spatial variability in the krill population compared to other locations and this may limit the
use of differences in krill length as an indicator of their provenance. This study underlines the importance of using data
from multiple sources when considering large-scale krill population dynamics; information that is crucial to the effective
management of the commercial exploitation of krill.
r 2004 Published by Elsevier Ltd.
ÃCorresponding author. Tel.: +44-1223-221607; fax +44-1223-2212539.
E-mail address: k.******@ (K. Reid).
0967-0645/$ - see front matter r 2004 Published by Elsevier Ltd.
doi:. IN PRESS
1276 K. Reid et al. / Deep-Sea Research II 51 (2004) 1275–1287
1. Introduction et al., 2001). Located in each of these regions are
land-based CCAMLR Ecosy

widening spatio-temporal variability in the krill population structure across the scotia sea开题资料 来自淘豆网www.taodocs.com转载请标明出处.

相关文档 更多>>
非法内容举报中心
文档信息
  • 页数13
  • 收藏数0 收藏
  • 顶次数0
  • 上传人好用的文档
  • 文件大小306 KB
  • 时间2022-01-17