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Scottish science applications of Remote Electronic Monitoring

机译：远程电子监控的苏格兰科学应用

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Part of the European Union (EU) Common Fisheries Policy revision of 2013 is a commitment to implement a land-all policy, under which the practice of discarding caught fish back into the sea will be forbidden. This measure will be applied first to the pelagic fleet in 2015, with a phased implementation for the demersal fleet between 2016 and 2019. As part of trials to determine the efficacy of a land-all policy for North Sea cod (Gadus morhua L.), Remote Electronic Monitoring (REM) systems were installed on seven Scottish demersal vessels in 2008. Vessels were permitted additional days-at-sea and cod quota, and were obliged to land all cod caught in the North Sea. This arrangement has been renewed each year as part of the Scottish Cod Conservation Credits scheme, and while the list of vessels involved has not remained constant, the scheme remains attractive to skippers (27 vessels in 2014), has always been oversubscribed, and is likely to remain a key part of the Scottish Government's approach to land-all enforcement. Marine Scotland Science is granted access to all REM data collected from Scottish vessels. This paper summarizes the scientific analyses carried out using these data from 2008 onwards, including the installation and operation of REM systems for scientific purposes; the programme developed to train REM analysts; systems for combining length measurements with fish counts; the potential use of REM data in management advice; and studies on such aspects as discard-rate estimation, activity mapping, estimating the relative costs of on-board and REM observation, morphometric length inference, and automated image analysis. We conclude that, while further development work is certainly needed, REM provides a rich source of fisheries information for science as well as for compliance and management. However, care will need to be taken to ensure that science monitoring and analysis resources do not become overwhelmed.
机译：欧洲联盟（EU）2013年共同渔业政策修订的一部分是对实施一项陆上政策的承诺，根据该政策，将禁止将捕获的鱼丢弃回海的做法。该措施将于2015年首先应用于远洋船队，并于2016年至2019年间分阶段实施沉没船队。作为试验的一部分，以确定北海鳕鱼陆上所有政策的效力（Gadus morhua L.） ，2008年，在7艘苏格兰沉船上安装了远程电子监控（REM）系统。船只被允许增加海上航行日和鳕鱼配额，并必须将在北海捕获的所有鳕鱼降落。作为苏格兰鳕鱼保护积分计划的一部分，这种安排每年都会更新，虽然所涉及的船舶数量并未保持恒定，但该计划仍对船长有吸引力（2014年为27艘），一直被超额认购，并且很可能仍然是苏格兰政府实施土地所有制方法的关键部分。苏格兰海洋科学局有权访问从苏格兰船只收集的所有REM数据。本文总结了从2008年开始使用这些数据进行的科学分析，包括用于科研目的的REM系统的安装和操作；该计划旨在培训REM分析人员；长度测量与鱼类计数相结合的系统； REM数据在管理建议中的潜在用途；以及对诸如丢弃率估计，活动映射，估计船上和REM观测的相对成本，形态长度推断以及自动图像分析等方面的研究。我们得出的结论是，尽管确实需要进一步的开发工作，但REM为科学以及合规性和管理提供了丰富的渔业信息来源。但是，需要注意确保科学监控和分析资源不会被淹没。

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