...
  • 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 first large-scale assessment of three-spined stickleback (Gasterosteus aculeatus) biomass and spatial distribution in the Baltic Sea
【24h】

The first large-scale assessment of three-spined stickleback (Gasterosteus aculeatus) biomass and spatial distribution in the Baltic Sea

机译：波罗的海首次对三梭stick（Gasterosteus aculeatus）生物量和空间分布进行大规模评估

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

Declines in predatory fish in combination with the impact of climate change and eutrophication have caused planktivores, including three-spined stickleback (Gasterosteus aculeatus), to increase dramatically in parts of the Baltic Sea. Resulting impacts of stickleback on coastal and offshore foodwebs have been observed, highlighting the need for increased knowledge on its population characteristics. In this article, we quantify abundance, biomass, size structure, and spatial distribution of stickleback using data from the Swedish and Finnish parts of the Baltic International Acoustic Survey (BIAS) during 2001-2014. Two alternative methods for biomass estimation suggest an increase in biomass of stickleback in the Baltic Proper, stable or increasing mean size over time, and larger individuals toward the north. The highest abundance was found in the central parts of the Baltic Proper and Bothnian Sea. The proportion of stickleback biomass in the total planktivore biomass increased from 4 to 10% in the Baltic Proper and averaged 6% of the total planktivore biomass in the Bothnian Sea. In some years, however, stickleback biomass has ranged from half to almost twice that of sprat (Sprattus sprattus) in both basins. Given the recent population expansion of stickleback and its potential role in the ecosystem, we recommend that stickleback should be considered in future monitoring programmes and in fisheries and environmental management of the Baltic Sea.
机译：掠食性鱼类的减少，再加上气候变化和富营养化的影响，导致波罗的海的浮游动物，包括三棘刺鱼（Gasterosteus aculeatus），在波罗的海部分地区急剧增加。观察到了棘背鱼对沿海和近海食物网的影响，这突出表明需要增加有关其种群特征的知识。在本文中，我们使用2001-2014年波罗的海国际声学调查（BIAS）瑞典和芬兰部分的数据量化了棘背鱼的丰度，生物量，大小结构和空间分布。进行生物量估算的两种替代方法表明，波罗的海适当地区的棘背生物的生物量增加，平均大小随时间稳定或增加，并且朝向北方的个体更大。在波罗的海和波特尼亚海的中部发现了最高的丰度。在波罗的海，棘背生物在浮游生物总生物量中的比例从4％增加到10％，在波恩海中平均占浮游生物总生物量的6％。然而，几年来，这两个盆地的棘背生物量都从西鲱（Sprattus sprattus）的一半到几乎两倍。考虑到最近棘背population种群的扩大及其在生态系统中的潜在作用，我们建议应在未来的监测计划以及波罗的海的渔业和环境管理中考虑棘背back。

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