KRILLSCAN: An automated open‐source software for processing and analysis of echosounder data from the Antarctic krill fishery

IF 2 3区农林科学 Q2 FISHERIES Fisheries Management and Ecology Pub Date : 2024-09-05 DOI:10.1111/fme.12739

Sebastian Menze, Gavin J. Macaulay, Guosong Zhang, Andrew D. Lowther, Bjørn A. Krafft

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Abstract

Krillscan software was developed to automatically process echosounder data and achieve an accelerated and transparent analysis of backscatter data that allows calculation of target biomass. Herein, the fishery for Antarctic krill (Euphausia superba, Henceforth Krill) was used as a case study to develop the approach. Implementation of a sustainable management strategy for the krill fishery is complicated by a lack of regularly updated krill abundance data on spatiotemporal scales of the fishery. To increase krill biomass data availability, automatic echosounder data processing and swarm detection software was tested against traditional manual scrutinization with LSSS software and agreed with only minor offsets in estimated nautical area scattering coefficients. In addition to automatic processing and data transfer, Krillscan also has a graphical user interface to supervise automatic krill swarm detection. Echogram size can be compressed up to 100 times and raw data are processed faster than generated, thereby enabling near‐real time analysis and data transfer. Compressed data can be transmitted online to allow fishing vessels to conduct surveys without having scientific personnel with special expertise on board.

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KRILLSCAN：处理和分析南极磷虾捕捞回声测深仪数据的自动化开源软件

Krillscan 软件是为自动处理回声测深仪数据而开发的，可对反向散射数据进行快速、透明的分析，从而计算目标生物量。在此，将南极磷虾（Euphausia superba，以下简称磷虾）渔业作为案例研究来开发该方法。由于缺乏渔业时空尺度上定期更新的磷虾丰度数据，磷虾渔业可持续管理策略的实施变得十分复杂。为了提高磷虾生物量数据的可用性，自动回声测深仪数据处理和虾群检测软件与传统的 LSSS 软件人工仔细检查进行了对比测试，结果一致，估计的海区散射系数仅有轻微偏差。除了自动处理和数据传输外，Krillscan 还有一个图形用户界面，用于监督磷虾群的自动检测。回声图的大小最多可压缩 100 倍，原始数据的处理速度比生成速度更快，因此可以进行近乎实时的分析和数据传输。压缩后的数据可在线传输，使渔船无需配备具有专业知识的科研人员即可进行勘测。

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来源期刊

Fisheries Management and Ecology 农林科学-渔业

CiteScore

3.80

自引率

5.00%

发文量

审稿时长

12-24 weeks

期刊介绍： Fisheries Management and Ecology is a journal with an international perspective. It presents papers that cover all aspects of the management, ecology and conservation of inland, estuarine and coastal fisheries. The Journal aims to: foster an understanding of the maintenance, development and management of the conditions under which fish populations and communities thrive, and how they and their habitat can be conserved and enhanced; promote a thorough understanding of the dual nature of fisheries as valuable resources exploited for food, recreational and commercial purposes and as pivotal indicators of aquatic habitat quality and conservation status; help fisheries managers focus upon policy, management, operational, conservation and ecological issues; assist fisheries ecologists become more aware of the needs of managers for information, techniques, tools and concepts; integrate ecological studies with all aspects of management; ensure that the conservation of fisheries and their environments is a recurring theme in fisheries and aquatic management.