避免灾难:在没有人为干预减少营养负荷的情况下波罗的海的现状

IF 5.1 2区 地球科学 Q1 LIMNOLOGY Limnology and Oceanography Letters Pub Date : 2024-10-03 DOI:10.1002/lol2.10443
Eva Ehrnsten, Christoph Humborg, Erik Gustafsson, Bo G. Gustafsson
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引用次数: 0

摘要

过量的营养物质输入造成了全球沿海生态系统的富营养化,引发了大面积的藻类大量繁殖、氧气耗尽以及当地渔业的崩溃。在波罗的海,自 20 世纪 80 年代以来,氮(N)和磷(P)的输入量已大幅减少,但环境状况几乎没有恢复的迹象。然而,对 20 世纪 80 年代中期以来持续高负荷的模拟表明,虽然环境状况尚未改善,但如果不减少负荷,今天的环境状况将大为恶化(例如,波罗的海本岛的无氧海底面积扩大了 82%,冬季无机氮和磷的浓度分别增加了 104% 和 58%)。在当前营养物质负荷持续到未来的情况下进行的其他模拟表明,未来几十年的情况可能会有所改善。这项研究强调了对富营养化早期预警信号采取行动的重要性,以及持续努力降低营养负荷如何能够减轻富营养化的严重程度。
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Disaster avoided: current state of the Baltic Sea without human intervention to reduce nutrient loads
Excessive nutrient inputs have caused eutrophication of coastal ecosystems worldwide, triggering extensive algal blooms, oxygen‐depletion, and collapse of local fisheries. In the Baltic Sea, inputs of nitrogen (N) and phosphorus (P) have been significantly reduced since the 1980s, but the environmental state shows little to no signs of recovery. However, a simulation with continued high loads from the mid‐1980s demonstrates that while the state has not improved yet, it would be considerably worse today without the load reductions (e.g., 82% larger oxygen‐free bottom areas and 104% and 58% higher wintertime concentrations of inorganic N and P, respectively, in the Baltic Proper). Additional simulations with current nutrient loads continuing into the future indicate that conditions will likely improve in the coming decades. This study underscores the significance of acting on early warning signs of eutrophication, and furthermore how sustained efforts to decrease nutrient loads can mitigate the severity of eutrophication.
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来源期刊
CiteScore
10.00
自引率
3.80%
发文量
63
审稿时长
25 weeks
期刊介绍: Limnology and Oceanography Letters (LO-Letters) serves as a platform for communicating the latest innovative and trend-setting research in the aquatic sciences. Manuscripts submitted to LO-Letters are expected to present high-impact, cutting-edge results, discoveries, or conceptual developments across all areas of limnology and oceanography, including their integration. Selection criteria for manuscripts include their broad relevance to the field, strong empirical and conceptual foundations, succinct and elegant conclusions, and potential to advance knowledge in aquatic sciences.
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