围网渔场关闭对围网渔场能源效率的影响：围网渔场与自由游泳学校策略

IF 2.3 2区农林科学 Q2 FISHERIES

Fisheries Research Pub Date : 2025-10-17 DOI:10.1016/j.fishres.2025.107563

Joseba Castresana, Oihane C. Basurko, Maitane Grande, Nagore Cuevas, Gorka Gabiña, Josu Santiago

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引用次数: 0

摘要

热带金枪鱼围网捕捞是世界上最重要的渔业之一，采用两种捕捞策略：鱼群聚集装置（FAD）和自由游动鱼群（FSC）。国际金枪鱼管理委员会通过暂时禁止使用FAD的办法管制FAD的使用，使渔业更可持续，但这些管理措施的可行性正在辩论中。本研究旨在(i)基于燃料使用强度（FUI）、碳足迹和盈利能力（€渔获量/€燃料）评估热带围网渔业的能源效率；（ii）通过首次评估围网渔业关闭法规对渔业能源效率和碳足迹的影响，确定大西洋在围网渔业关闭和非关闭期间的捕捞策略（FAD与FSC）之间的差异。分析了来自7艘船只的73次捕鱼行程（2019-2022年）的数据，包括船只规格、行程细节、燃料使用和捕捞数据。与FSC行程（1810 L/t; 4932.3 kgCO2/t； 2.54€渔获量/€燃料）和混合行程（588 L/t; 1602.0 kgCO2/t； 2.52€渔获量/€燃料）相比，FAD行程更节能，碳足迹更低，盈利能力更高（456 L/t; 1241.4 kgCO2/t； 2.93€渔获量/€燃料）。在FAD关闭期间，FSC行程的FUI高于非关闭期间（541 L/t； 2.76€渔获量/€燃料），盈利能力较低（2736 L/t； 1.75€渔获量/€燃料）。FAD的关闭影响了热带金枪鱼围网渔业的能源效率、碳足迹和经济盈利能力；没有FAD设备，FSC导致高FUI和低盈利能力。

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Effect of FAD closure on the energy efficiency of the purse seine fishery: FAD vs free swimming school strategy

Tropical tuna purse seine fishing is one of the most important fisheries in the world, employing two strategies to fish: fish aggregating devices (FAD) and free-swimming school (FSC). International tuna management commissions have regulated the use of FADs to make the fishery more sustainable, by means of temporal FAD usage prohibitions, but the viability of these management measures is under debate. This study aims to (i) evaluate the energy efficiency, based on the fuel use intensity (FUI), carbon footprint and profitability (€_catch/€_fuel) of the tropical purse seine fishery, and (ii) determine the differences between fishing strategies, FAD versus FSC, in the Atlantic Ocean during FAD closure and non-closure periods by assessing, for the first time, the effect of FAD closure regulations in the energy efficiency and carbon footprint of the fishery. Data from 73 fishing trips (2019–2022) from 7 vessels were analysed, including vessel specifications, trip details, fuel usage, and catch data. FAD trips were more energy efficient, with lower carbon footprints and higher profitability (456 L/t; 1241.4 kgCO2/t; 2.93 €catch/€fuel) compared to FSC trips (1810 L/t; 4932.3 kgCO2/t; 2.54 €catch/€fuel) and mixed trips (588 L/t; 1602.0 kgCO2/t; 2.52 €catch/€fuel). During FAD closure, FSC trips had higher FUI and lower profitability (2736 L/t; 1.75 €catch/€fuel) than non-closure periods (541 L/t; 2.76 €catch/€fuel). FAD closure impacts the energy efficiency, carbon footprint, and economic profitability of the tropical tuna purse seine fishery; without FAD sets, FSC results in high FUI and low profitability.

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来源期刊

Fisheries Research 农林科学-渔业

CiteScore

4.50

自引率

16.70%

发文量

294

审稿时长

15 weeks

期刊介绍： This journal provides an international forum for the publication of papers in the areas of fisheries science, fishing technology, fisheries management and relevant socio-economics. The scope covers fisheries in salt, brackish and freshwater systems, and all aspects of associated ecology, environmental aspects of fisheries, and economics. Both theoretical and practical papers are acceptable, including laboratory and field experimental studies relevant to fisheries. Papers on the conservation of exploitable living resources are welcome. Review and Viewpoint articles are also published. As the specified areas inevitably impinge on and interrelate with each other, the approach of the journal is multidisciplinary, and authors are encouraged to emphasise the relevance of their own work to that of other disciplines. The journal is intended for fisheries scientists, biological oceanographers, gear technologists, economists, managers, administrators, policy makers and legislators.