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Drivers and implications of change in an inshore multi-species fishery
ICES Journal of Marine Science ( IF 3.1 ) Pub Date : 2021-04-09 , DOI: 10.1093/icesjms/fsab083
Lauren Henly 1 , James E Stewart 1, 2 , Stephen D Simpson 1
Affiliation  

Inshore fisheries are an important source of employment and income across Europe. However, their sustainability and management efficacy are relatively understudied, particularly in a multispecies context. Management of these data-limited fisheries can be informed by assessments of standardized catch and landings per unit effort (CPUE and LPUE) data from fishery-dependent surveys. We demonstrate the utility of this approach in the first robust assessment of the sustainability and management of a multispecies inshore fishery for live wrasse (Labridae) in southern England. Our findings have wider ramifications for assessment and management of inshore fisheries, including international live wrasse fisheries, many of which are intensely exploited but have less stringent management than the fishery studied here. Using generalized linear models, we identified ecologically relevant drivers of variation in CPUE and LPUE, alongside interspecific variation in responses to fishing pressure during 2017–2019. We also highlight robust evidence of declines in the primary target species, a protogynous hermaphrodite, that are suggestive of fishery impacts driven by management-enabled selective removal of mature females. We demonstrate the need to consider ecologically similar species separately for management purposes, and account for ecogeographical variables in assessments; a failure to do so risks erroneous conclusions regarding inshore fisheries’ sustainability.

中文翻译:

近海多品种渔业变化的驱动因素和影响

近海渔业是整个欧洲就业和收入的重要来源。然而,它们的可持续性和管理功效相对较少,特别是在多物种背景下。这些数据有限的渔业的管理可以通过评估来自渔业相关调查的标准化渔获量和单位努力上岸量(CPUE 和 LPUE)数据来提供信息。我们在首次对英格兰南部活濑鱼 (Labridae) 多物种近海渔业的可持续性和管理进行强有力的评估时,证明了这种方法的实用性。我们的研究结果对近海渔业的评估和管理产生了更广泛的影响,包括国际活濑鱼渔业,其中许多被强烈开发,但管理没有这里研究的渔业那么严格。使用广义线性模型,我们确定了 CPUE 和 LPUE 变化的生态相关驱动因素,以及 2017-2019 年期间对捕捞压力的反应的种间变化。我们还强调了主要目标物种(一种雌雄同体雌雄同体)下降的有力证据,这表明管理启用的选择性去除成熟雌性驱动的渔业影响。我们证明有必要出于管理目的分别考虑生态相似的物种,并在评估中考虑生态地理变量;不这样做可能会导致关于近海渔业可持续性的错误结论。一种雌雄同体的雌雄同体,这暗示了由管理启用的选择性去除成熟雌性驱动的渔业影响。我们证明有必要出于管理目的分别考虑生态相似的物种,并在评估中考虑生态地理变量;不这样做可能会导致关于近海渔业可持续性的错误结论。一种雌雄同体的雌雄同体,这暗示了由管理启用的选择性去除成熟雌性驱动的渔业影响。我们证明有必要出于管理目的分别考虑生态相似的物种,并在评估中考虑生态地理变量;不这样做可能会导致关于近海渔业可持续性的错误结论。
更新日期:2021-04-09
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