...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ICES Journal of Marine Science >Evidence for substock dynamics within whiting (Merlangius merlangus) management regions
【24h】

Evidence for substock dynamics within whiting (Merlangius merlangus) management regions

机译：白垩纪（Merlangius merlangus）管理区域内子种群动态的证据

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Whiting in the North Sea and Eastern Channel is currently assessed as a single management unit. However, several studies suggest that this stock may be comprised of more than one subpopulation within a larger metapopulation. A key characteristic of metapopulations is asynchrony in the dynamics of component subpopulations. In this study, indices of recruitment and spawning-stock biomass (SSB) were developed to test for asynchrony across putative subpopulations in the North Sea and west of Scotland. Differences in SSB and recruitment trends were detected, consistent with expectations from metapopulation dynamics. At least three different subpopulation components (southern and northern North Sea, and west of Scotland) were indicated on the basis of differing trends. Analysis of spatial distribution suggested that the boundary between the northern and southern North Sea subpopulations was associated with the change in bathymetry that extended from the coast of Norfolk in England to the southern tip of Norway. The current management system for whiting in the North Sea assumes a unit stock, which is contrary to current sources of biological evidence and seems inappropriate. Consideration of a north-south split along the boundary detected should be beneficial for both assessment and management of the resource.
机译：目前，北海和东部海峡的Whiting被评估为单一管理单位。但是，一些研究表明，这种种群可能由一个较大的亚种群中的一个以上亚种群组成。子种群的关键特征是组分亚种群动态的异步性。在这项研究中，开发了招募和产卵生物量（SSB）的指标，以测试北海和苏格兰西部假定的亚种群之间的异步性。发现了SSB和招聘趋势方面的差异，这与来自种群动态的预期一致。根据不同的趋势，至少指示了三个不同的亚人群组成部分（南部和北海北部以及苏格兰西部）。空间分布分析表明，北海和南海亚种群之间的边界与从英国诺福克海岸一直延伸到挪威南端的测深变化有关。当前北海白鲸的管理系统采用的是单位种群，这与目前的生物学证据来源相反，而且似乎不合适。考虑沿检测到的边界的南北裂隙对资源的评估和管理都将是有益的。

著录项

  • 来源
    《ICES Journal of Marine Science》 |2013年第6期|1118-1127|共10页
  • 作者

    Carlos de Castro; Peter J. Wright; Colin P. Millar; Steven J. Holmes;

  • 作者单位

    Marine Scotland Science, Marine Laboratory, PO Box 101, 375 Victoria Road, Aberdeen, ABU 9DB, UK,Calle Dalia Portal 60, 28109, Alcobendas, Madrid, Spain;

    Marine Scotland Science, Marine Laboratory, PO Box 101, 375 Victoria Road, Aberdeen, ABU 9DB, UK;

    Marine Scotland Science, Marine Laboratory, PO Box 101, 375 Victoria Road, Aberdeen, ABU 9DB, UK,European Commission, joint Research Centre, Institute for the Protection and Security of the Citizen/Maritime Affairs Unit, 21027 Ispra (VA), Italy;

    Marine Scotland Science, Marine Laboratory, PO Box 101, 375 Victoria Road, Aberdeen, ABU 9DB, UK;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Merlangius merlangus; metapopulation; recruitment; smoothers; SSB; survey indices;

    机译：Merlangius merlangus;人群;招聘;平滑器SSB;调查指标;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号