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Negligible effect of hypolimnetic oxygenation on the trophic state of Lake Jyvasjarvi, Finland

机译:低氧给氧对芬兰Jyvasjarvi湖营养状态的影响可忽略不计

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摘要

Hypolimnetic oxygenation by pumping oxygen-rich surface water to the hypolimnion (HLO) is a commonly used tool for the restoration of nutrient-loaded dimictic lakes. However, in recent years its effectiveness has been questioned. In this case study we evaluated monitoring data covering a period of 23-years to show that, although experimental cessation of HLO drastically changed the lake's temperature and dissolved oxygen regimes, it did not significantly affect its trophic status. Thus, we recommend that the limited financial resources available are better directed towards further lowering the lake's external phosphorus load than continuing HLO. (C) 2016 Elsevier GmbH. All rights reserved.
机译:通过将富含氧气的地表水泵送到次富水层(HLO)中来进行低氧合氧化是恢复养分丰富的拟微湖的常用工具。但是,近年来,其有效性受到质疑。在本案例研究中,我们评估了为期23年的监测数据,结果表明,尽管实验性停止HLO极大地改变了湖泊的温度和溶解氧状态,但它并未显着影响其营养状态。因此,我们建议,比持续进行HLO更好地将可用的有限财政资源用于进一步降低湖泊的外部磷负荷。 (C)2016 Elsevier GmbH。版权所有。

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