Effects of Nutrient Management Scenarios on Marine Food Webs: A Pan-European Assessment in Support of the Marine Strategy Framework Directive-猫眼课题宝

DOI：

10.3389/fmars.2021.596797

发表时间：

2021-03

期刊：

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其他

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作者：

C. Piroddi;E. Akoglu;E. Andonegi;Jacob W Bentley;I. Celić;M. Coll;D. Dimarchopoulou;R. Friedland;K. de Mutsert;R. Girardin;E. García‐Górriz;B. Grizzetti;Pierre-Yves Hernvann;J. Heymans;Bärbel Müller-Karulis;S. Libralato;C. Lynam;D. Macias;S. Miladinova;F. Moullec;A. Palialexis;O. Parn;N. Serpetti;C. Solidoro;J. Steenbeek;A. Stips;M. Tomczak;M. Travers-Trolet;Athanassios C. Tsikliras

富营养化是影响近海的最重要的人为压力之一。在欧洲，已经实施了若干立法和管理措施，以制止海洋生态系统中营养物超载。本研究评估了淡水营养控制措施对欧洲海洋生态系统高营养级（HTL）的影响，描述符和标准由海洋战略框架指令（MSFD）定义。我们使用了一种新的泛欧海洋建模集成的14 HTL模型，几乎覆盖了所有的欧盟海域，两个营养管理方案。我们的预测结果表明，拟议的营养减少措施可能不会对欧洲海洋生态系统的结构和功能产生重大影响。在评估的标准中，具有重要商业价值的鱼类种群的产卵群生物量和小型中上层鱼类的生物量将受到最大影响，尽管其数值低于2.5%。对于其他标准/指标，如物种多样性和营养级指标，影响较小。黑海和东北大西洋是受影响最严重的区域，而波罗的海是唯一有改善迹象的区域。沿海和大陆架地区比包括公海在内的大型区域和次区域生态系统对环境变化更为敏感。这是第一个泛欧多模式比较研究，用于通过一套选定的生态指标评估陆上措施对欧洲海洋和沿海生态系统的影响。由于人为的压力正在迅速扩大在海洋环境和决策者需要使用快速和有效的政策措施，快速变化的环境，这个建模框架是支持和指导欧盟的政策需求和决策的重要资产。

Eutrophication is one of the most important anthropogenic pressures impacting coastal seas. In Europe, several legislations and management measures have been implemented to halt nutrient overloading in marine ecosystems. This study evaluates the impact of freshwater nutrient control measures on higher trophic levels (HTL) in European marine ecosystems following descriptors and criteria as defined by the Marine Strategy Framework Directive (MSFD). We used a novel pan-European marine modeling ensemble of fourteen HTL models, covering almost all the EU seas, under two nutrient management scenarios. Results from our projections suggest that the proposed nutrient reduction measures may not have a significant impact on the structure and function of European marine ecosystems. Among the assessed criteria, the spawning stock biomass of commercially important fish stocks and the biomass of small pelagic fishes would be the most impacted, albeit with values lower than 2.5%. For the other criteria/indicators, such as species diversity and trophic level indicators, the impact was lower. The Black Sea and the North-East Atlantic were the most negatively impacted regions, while the Baltic Sea was the only region showing signs of improvement. Coastal and shelf areas were more sensitive to environmental changes than large regional and sub-regional ecosystems that also include open seas. This is the first pan-European multi-model comparison study used to assess the impacts of land-based measures on marine and coastal European ecosystems through a set of selected ecological indicators. Since anthropogenic pressures are expanding apace in the marine environment and policy makers need to use rapid and effective policy measures for fast-changing environments, this modeling framework is an essential asset in supporting and guiding EU policy needs and decisions.

Effects of Nutrient Management Scenarios on Marine Food Webs: A Pan-European Assessment in Support of the Marine Strategy Framework Directive

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