Constructing a baseline groundfish trawl survey for an offshore windfarm development area

IF 1.8 3区农林科学 Q2 FISHERIES

Marine and Coastal Fisheries Pub Date : 2023-10-25 DOI:10.1002/mcf2.10267

Kevin D. E. Stokesbury, Kyle Cassidy, Travis M. Lowery

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Abstract

Objective

Large-scale offshore windfarms are proposed along the U.S. Northeast coast; the first is the Vineyard Wind lease area, which is planned for construction in 2023. During the fall of 2018, an experimental bottom trawl survey in the Vineyard Wind lease area and adjacent control area was conducted to collect preliminary estimates of fish assemblage composition, density, and size distribution.

Methods

Initially, a new open cod end design was tested, but poor visibility due to fine substrate rendered the gear inefficient. The survey was completed using the traditional closed-tow method.

Result

The estimates of density and variance enabled a power analysis, which recommended a minimum of 20 tows in the development area and 20 tows in the control area to achieve a 25% chance of detecting a shift in the density of the four most abundant species.

Conclusion

These results led to the development of a seasonal bottom trawl survey beginning in 2019 using protocols that align with other shelfwide bottom trawl surveys.

Abstract Image

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为海上风电场开发区域构建基线底栖鱼拖网调查

目的拟在美国东北沿海建设大型海上风电场;第一个是葡萄园风能租赁区，计划于2023年建设。2018年秋季，在葡萄园风租赁区和邻近控制区进行了实验性底拖网调查，以收集鱼类组合组成、密度和大小分布的初步估计。方法最初，测试了一种新的开放式末端设计，但由于衬底较细，能见度较差，导致齿轮效率低下。调查采用传统的闭拖法完成。结果对密度和方差的估计进行了功率分析，建议在发展区和控制区至少设置20个拖曳，以达到25%的机会检测到最丰富的四种物种的密度变化。这些结果导致了从2019年开始的季节性底拖网调查的发展，该调查使用的协议与其他全货架底拖网调查一致。

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来源期刊

Marine and Coastal Fisheries FISHERIES-MARINE & FRESHWATER BIOLOGY

CiteScore

3.40

自引率

5.90%

发文量

审稿时长

>12 weeks

期刊介绍： Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science publishes original and innovative research that synthesizes information on biological organization across spatial and temporal scales to promote ecologically sound fisheries science and management. This open-access, online journal published by the American Fisheries Society provides an international venue for studies of marine, coastal, and estuarine fisheries, with emphasis on species'' performance and responses to perturbations in their environment, and promotes the development of ecosystem-based fisheries science and management.