地中海中部欧洲鳀鱼的水文变化和生物量波动：拉格朗日分析的货币估计和对渔业的影响
Hydrographic variability and biomass fluctuations of European anchovy (Engraulis encrasicolus) in the Central Mediterranean Sea: Monetary estimations and impacts on fishery from Lagrangian analysis
摘要：
在过去几十年中，科学界一直在调查影响渔业的生物和水文过程。这种跨学科和协同的办法目前正在作出重大贡献，特别是在将水文现象与小型中上层鱼类的生物量变异和分布联系起来方面。在这里，我们估计水文波动对小型远洋渔业的影响，侧重于年际变化，其特征之间的连接性产卵和招募地区的欧洲（Engraulis encrasicolus，Linnaes 1758），在西西里海峡（地中海）的北侧。结果表明，一个特定年份的海岸输运动力在很大程度上影响了下一年记录的生物量。我们的工作，此外，量化的具体货币影响登陆欧洲的淡水鱼渔业由于水动力学的变化，连接生物量波动与渔业经济在一个高度动态和开发的海洋环境作为西西里海峡。特别是，我们建立了一个模型，该模型将货币价值归因于水文现象（即，在粮农组织地理分区16（西西里岛南部）登记的鱼类种群（近岸与近岸鱼卵和幼虫运输）。这使我们能够根据不同的运输动态对渔获量进行货币估计。我们的研究结果突出了水文现象对渔业社会经济表现的至关重要性。
英文摘要：
During the last decades, scientific community has been investigating both biological and hydrographic processes that affect fisheries. Such an interdisciplinary and synergic approach is nowadays giving a fundamental contribution, in particular, in connecting the dots between hydrographic phenomena and biomass variability and distribution of small pelagic fish. Here we estimate impacts of hydrographic fluctuations on small pelagic fishery, focusing on the inter-annual variability that characterizes connectivity between spawning and recruiting areas for the European anchovy (Engraulis encrasicolus, Linnaues 1758), in the Northern side of the Sicily Channel (Mediterranean Sea). Results show that coastal transport dynamics of a specific year largely affect the biomass recorded the following year. Our work, moreover, quantifies the specific monetary impacts on landings of European anchovy fishery due to hydrodynamics variability, connecting biomass fluctuations with fishery economics in a highly dynamic and exploited marine environment as the Sicily Channel. In particular, we build a model that attributes a monetary value to the hydrographic phenomena (i.e., cross-shore vs. alongshore eggs and larvae transport), registered in the FAO Geographical Sub-Area (GSA) 16 (Southern Sicily). This allows us to provide a monetary estimation of catches, derived from different transport dynamics. Our results highlight the paramount importance that hydrographic phenomena can have over the socio-economic performance of a fishery.
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