NOURMED beam trawl survey catch data : Coastal benthic assemblages of the Gulf of Lion (North-western Mediterranean) in 2018-2019

as part of the monitoring program of the marine strategy framework directive (msfd), the monitoring of demersal fish and cephalopods in coastal soft sediments has been deemed a priority. in order to do this, annual fish surveys have been deployed to cover coastal nurseries, which constitute essential habitats for many marine species. the characterization of the ecological state of these populations and the study of the functionality of nursery habitats is required for the calculation of the indicators of good ecological status (delaunay et al., 2019) and is essential for the implementation of ecosystem management measures guaranteeing sustainable uses. on the french mediterranean coast, the nourmed survey exploring the feasibility of such monitoring was successfully carried out in the gulf of lion in september 2018 and 2019 (vaz et al., 2019, vaz et al. 2020). they provide detailed quantitative data on benthic and demersal species composition in coastal nursery grounds of the gulf of lion.

作为海洋战略框架指令（MSFD）监控计划的一部分，对沿海软质沉积物中底栖鱼类和头足类动物的监控被视为优先任务。为实现此目标，每年对沿海幼鱼栖息地进行鱼类调查，这些栖息地是众多海洋物种的关键栖息地。对这些种群生态状态的描述以及对幼鱼栖息地功能的研究，对于计算良好生态状态指标（Delaunay 等，2019年）至关重要，并对于实施确保可持续利用的生态系统管理措施至关重要。在法国地中海沿岸，Nourmed调查于2018年9月和2019年在利翁湾成功开展了此类监控的可行性研究（Vaz 等，2019年，Vaz 等，2020年）。它们提供了关于利翁湾沿海幼鱼栖息地底栖和底栖物种组成的详细定量数据。