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Spatial distribution and abundance of the by‐catch coastal elasmobranch Raja undulata: Managing a fishery after moratorium
Fisheries Management and Ecology ( IF 2 ) Pub Date : 2020-03-21 , DOI: 10.1111/fme.12426
Ivone Figueiredo 1 , Catarina Maia 1 , Lucília Carvalho 2
Affiliation  

The undulate ray Raja undulata Lacepède is a coastal species common along the north‐eastern Atlantic Ocean and Mediterranean Sea and is highly accessible to coastal fisheries. Between 2009 and 2015, the species was under a European Union (EU) fisheries moratorium that hampered the collection of data to assess its stock status in Portuguese waters. After that period, a small experimental EU fishing quota was set for Portugal enabling collection of fishery data under a fishermen self‐sampling scenario. Based on the data collected, R. undulata abundance was estimated along the Portuguese continental coast through the application of a N‐mixture model and incorporating environmental factors. The results support the species coastal and patchy nature across the study area with higher abundances estimated in areas associated with shallow sandy bottoms as the Southwest region. The present work constitutes an important step for the management of this fishery resource, in particular concerns about its abundance trends over time and its spatial distribution and habitat requirements.

中文翻译:

副渔获物沿海沿岸elaRaja undulata的空间分布和丰富度:暂停捕捞后的渔业管理

波浪射线的Raja undulataLacepède是一种沿海物种,在东北大西洋和地中海沿岸常见,沿海渔业极易接近。在2009年至2015年间,该物种处于欧洲联盟(EU)的渔业禁令之下,这妨碍了数据收集以评估其在葡萄牙水域的种群状况。在此之后,欧盟为葡萄牙设定了一个小规模的实验性捕捞配额,以便在渔民自采样的情况下收集渔业数据。根据收集的数据,R。undulata通过应用N混合模型并结合环境因素,估算了葡萄牙大陆沿岸的丰度。结果支持了整个研究区域的沿海和斑块物种,与西南地区浅沙底相关的区域估计丰度更高。目前的工作是管理该渔业资源的重要一步,尤其是对其渔业资源随时间推移的丰富趋势及其空间分布和栖息地要求的关注。
更新日期:2020-03-21
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