...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Reviews in Fisheries Science & Aquaculture >Vessel Avoidance Response: A Complex Tradeoff Between Fish Multisensory Integration and Environmental Variables
【24h】

Vessel Avoidance Response: A Complex Tradeoff Between Fish Multisensory Integration and Environmental Variables

机译：船舶避免响应：鱼类多师集成和环境变量之间的复杂权重新

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

The avoidance reaction by fish in front of an approaching vessel is a major source of bias in direct biomass assessment and ecological studies based on fisheries acoustics data. An experiment was carried out to compare echosounder data obtained using a small speedboat and a research fisheries vessel generating significant higher noise above conventional reduced-noise standard. The results show that there was no significant difference between the individual fish target strength distributions, and the numbers of schools recorded by both boats, these schools having similar areas and perimeters. However, the schools detected by the noisier vessel were significantly deeper, and unexpectedly had a significantly higher energy level. These findings suggest that noise-reduced vessels trigger a different vessel avoidance reaction. The noise-reduction standard is not sufficient to reduce avoidance behavior. It is also to take into consideration the ambient noise, which could impair perception of the platform by the fish, and the probability that the acoustic stimuli could be less important than visual perception under some local conditions. The paper introduces the concept of partial avoidance and presents a conceptual diagram of the strength of the avoidance reaction. Last, it is not recommended, because of noise reasons, that vessels routinely used for pelagic stock assessment surveys be changed. Indeed standardized time series, which could be disrupted when switching to a new vessel, are more important than the hypothetical gain from change to quieter vessels. Obviously, all long-term surveys must change vessels; best practice will be to estimate the vessel effect before any change to avoid disrupting the time series and/or perform vessel intercalibration surveys.
机译：在接近船舶前面的鱼类避免反应是基于渔业声学数据的直接生物量评估和生态学研究的主要偏见来源。进行了一个实验，以比较使用小快艇获得的回波器数据和研究渔业容器产生显着的高于传统降噪标准的噪声。结果表明，各个鱼类目标强度分配与两艘船舶记录的学校数量没有显着差异，这些学校具有类似的区域和周长。然而，由噪声船检测到的学校显着深入，并且出乎意料地具有更高的能级。这些发现表明降噪血管引发了不同的血管避免反应。降噪标准不足以减少避免行为。还要考虑到环境噪声，这可能损害了鱼类对平台的看法，以及声刺激在一些当地条件下的视觉感知可能不那么重要的可能性。本文介绍了部分避免的概念，并呈现了避免反应强度的概念图。最后，不建议，由于噪音原因，常规用于Pelagic股票评估调查的船只被改变。实际上标准化时间序列，在切换到新船只时可能会破坏，比从改变到更安静的船只的假设增益更重要。显然，所有长期调查必须改变船只;最佳实践将是在任何改变之前估算血管效应，以避免破坏时间序列和/或执行血管闭体调查。

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