Estimating recreational trap-fishing effort for crayfish from zig-zag line transects, drone surveys and enforcement surveys

IF 2 3区农林科学 Q2 FISHERIES

Fisheries Management and Ecology Pub Date : 2023-12-04 DOI:10.1111/fme.12675

Göran Sundblad, Annica de Groote, Peter Lundquist, Mattias Larsson, Rasmus Linderfalk, Fredrik Larson

引用次数: 0

Abstract

Estimates of recreational fishing effort and catch are needed to inform fisheries management, but such estimates can be challenging to obtain. We combined a zig-zag line transect survey of buoys, a fisheries enforcement survey and a drone survey to estimate recreational effort in the open-access trap fishery for signal crayfish (Pacifastacus leniusculus) in the sixth largest lake in Europe, Lake Vättern, Sweden. Using supporting variables such as size of nearby ports and bathymetry, our model-assisted estimate of total effort was 6400 (±4300 CI) buoys during the three-weekend season. Using the frequency of buoys to traps as a constant, the total number of crayfish traps was estimated to be 25,500 (±17,000 CI). The sampling design and methods presented are useful for ecologists and resource managers to design future multi-source surveys of recreational trap fishing effort.

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估计休闲陷阱捕捞小龙虾的努力从曲折线横断面，无人机调查和执法调查

需要对休闲捕鱼的努力量和捕获量进行估计，以便为渔业管理提供信息，但这种估计很难获得。我们结合了对浮标的之字形样带调查、渔业执法调查和无人机调查，以估计在欧洲第六大湖泊瑞典Vättern湖上，对信号小龙虾(Pacifastacus leniusculus)的开放式陷阱渔业的娱乐努力。使用支持变量，如附近港口的大小和水深测量，我们的模型辅助估计在三个周末的季节中，总工作量为6400(±4300 CI)个浮标。使用浮标到陷阱的频率作为常数，估计小龙虾陷阱的总数为25,500(±17,000 CI)。所提出的抽样设计和方法对生态学家和资源管理者设计未来的娱乐陷阱捕鱼努力量的多源调查是有用的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.