Department of Economics and Management, University of Helsinki, P.O. Box 27, 00014, Helsinki, Finland.
Marine and Freshwater Solutions, Finnish Environment Institute, Latokartanonkaari 11, 00790, Helsinki, Finland.
Ambio. 2024 Apr;53(4):579-591. doi: 10.1007/s13280-023-01965-7. Epub 2023 Dec 23.
Our objective is to understand the effectiveness of local and international nutrient pollution mitigation efforts when targeting better water quality in the region's coastal waters. To this end, we developed an integrated modeling framework for the Archipelago Sea located in the Baltic Sea in Northern Europe, conducted what-if analyses for various ambition levels of nutrient abatement, and studied the long-term consequences at the sea basin scale. We demonstrate that in outer parts of the Archipelago Sea, a good eutrophication status can be achieved if the current internationally agreed policy goals for nutrient abatement are successfully met. In inner coastal areas, current goals for phytoplankton biomass could be reached only through extreme mitigation efforts in all polluting sectors and large-scale application of yet poorly tested ecological engineering methods. This result calls for carefully considering the relevance of current threshold values for phytoplankton and its role as a dominant indicator of good ecological status.
我们的目标是了解在针对该地区沿海水域改善水质时，地方和国际营养物污染缓解措施的有效性。为此，我们为位于北欧波罗的海的群岛海开发了一个综合模型框架，针对各种缓解营养物的雄心水平进行了假设分析，并研究了海盆尺度的长期后果。我们证明，如果成功实现当前国际商定的营养物减排政策目标，在外群岛海地区可以实现良好的富营养化状态。在内陆沿海地区，只有通过在所有污染部门采取极端缓解措施和大规模应用尚未经过充分测试的生态工程方法，才能实现当前浮游植物生物量的目标。这一结果呼吁仔细考虑当前浮游植物阈值及其作为良好生态状况主要指标的相关性。
