• 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 >The effects of periodic marine inflow into the Baltic Sea on the migration patterns of Western Baltic spring-spawning herring
【24h】

The effects of periodic marine inflow into the Baltic Sea on the migration patterns of Western Baltic spring-spawning herring

机译：周期性海洋流入波罗的海对西波罗的海春季产卵鲱鱼迁移模式的影响

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

Western Baltic spring-spawning herring (WBSSH, Clupea harengus L.) perform seasonal migrations between feeding grounds in the Skagerrak and Kattegat and their spawning sites in the Western Baltic Sea. The Sound, connecting the Kattegat to the Western Baltic Sea, is an important aggregation and transition zone for this herring stock during its spawning migration. We analysed data from the German autumn acoustic surveys of the years 1993-2009. These data revealed at least two different distribution patterns of herring in autumn: herring generally aggregated in the Sound, but in some years the majority of herring were detected further south, being outside of the Sound by the time of the survey. We tested whether observed annual differences in the herring migration can be explained by either stock characteristics (age and size) or hydrographical variables (salinity and oxygen concentration). Our results suggest that rather than being related to stock characteristics, the distribution pattern of herring was related to environmental conditions, i.e. to marine inflow events into the Baltic Sea. Barotropic inflow events in late summer and early autumn seem to prevent deoxygenation in the Sound and thereby favour the prolonged aggregation of herring in the Sound.
机译：波罗的海西部春季产卵鲱鱼（WBSSH，Clupea harengus L.）在Skagerrak和Kattegat的觅食场与西波罗的海产卵场之间进行季节性迁徙。声音将卡特加特海峡与西波罗的海连接起来，是该鲱鱼产卵迁徙期间的重要聚集和过渡带。我们分析了1993-2009年德国秋季声学调查的数据。这些数据揭示了秋季至少两种不同的鲱鱼分布模式：鲱鱼通常聚集在Sound中，但是在某些年份中，大多数鲱鱼被发现在更南的地方，在调查之时位于Sound之外。我们测试了观察到的鲱鱼迁移的年度差异是否可以通过种群特征（年龄和大小）或水文变量（盐度和氧气浓度）来解释。我们的结果表明，鲱鱼的分布方式与种群特征无关，而与环境条件有关，即与波罗的海的海洋流入事件有关。夏末和初秋的正压流入事件似乎阻止了声音中的脱氧，因此有利于鲱鱼中鱼群的长时间聚集。

著录项

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