Abstract

The advancement of conservation practices in global trawl fisheries has been impeded in part by a lack of a collective understanding of the most relevant and broad-scale knowledge-needs, along with the identification of potential barriers to addressing these knowledge-needs. Using both an online survey and an in-person workshop, we engaged a diversity of fishing industry stakeholders including scientists, technology companies, trawl net makers, and fishermen working with North Pacific, United States, trawl fisheries to identify and prioritize areas in which further knowledge is required for successful implementation of conservation engineering practices. In addition, we identified barriers to addressing these knowledge-needs. Knowledge-needs related to fishing gear performance were identified among the top priorities, including several areas targeted at improving fishing efficiency that could further advance the sustainability of well-managed trawl fisheries. To better understand the composition and behavior of target versus non-target catch, workshop participants identified the importance of closing data and technology gaps. This highlights areas for potential collaboration between fishermen, researchers, and technology companies to address research prioritized by the end-user. Further, results from the workshop emphasized a need for industry-driven training and workshops focused on elevating fishermen skill for newer entrants through peer-learning and knowledge-sharing to achieve objectives like better non-target avoidance and increased fishing efficiency of the target species. Addressing these prioritized knowledge-needs, by first working toward overcoming the industry-identified barriers, may aid in increasing uptake of conservation practices, thereby contributing to the long-term sustainability of these fisheries and associated social-ecological systems.

Highlights

  • Bottom and pelagic trawl fisheries account for over one-third of the global annual fish production by biomass (Pauly et al, 2020)

  • We identified relevant knowledge-needs for conservation engineering innovation in North Pacific, United States trawl fisheries and barriers to addressing these knowledge-needs

  • Our results demonstrate a need to expand the goals of training sessions to include knowledge and techniques for fishermen to harvest their catch efficiently, such as by manipulating gear configuration to improve non-target species avoidance and maximizing use of technology currently installed on the vessel or readily available

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Summary

Introduction

Bottom and pelagic trawl fisheries account for over one-third of the global annual fish production by biomass (Pauly et al, 2020) While this reflects a significant contribution to food security goals, trawl fisheries receive considerable attention because of their potential impacts on marine ecosystems (e.g., Hutchings, 1990; Clark et al, 2016). Improvements in catch efficiency can result in reduced effort, and lead to fewer seafloor-gear contact events and reduced fuel usage, thereby reducing greenhouse gas emissions and overall environmental impact (Murphy et al, 2021). These improvements could manifest through several aspects of trawling, such as reduced benthic interaction, lower bycatch, decreased discard mortality, and decreased gear loss (i.e., derelict or ghost gear, marine debris)

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