Effect of meteorology and nutrient load on oxygen depletion in a Danish micro-tidal estuary

被引：41

作者：

Flemming Møhlenberg

机构：

[1] National Environmental Research Institute,

来源：

Aquatic Ecology | 1999年 / 33卷 / 1期

关键词：

estuaries; nitrogen; oxygen depletion; phosphorus; regression model; vertical mixing;

D O I：

10.1023/A:1009956210537

中图分类号：

学科分类号：

摘要：

In a detailed analysis of oxygen saturation in a shallow Danish estuary it was possible to separate the effect of meteorological forcings (i.e. wind and solar radiation) and nutrient loads on oxygen depletion in bottom water. Regression analysis showed that oxygen saturation tied to nitrogen load rather than to phosphorus load. During summer periods of stratification the oxygen saturation could be attributed to the time elapsed after the onset of stratification and the accumulated nitrogen loading 10 month prior to measurement. Using a 10-year meteorological database and an empirical model it was calculated that a 25% reduction in nitrogen loading would reduce the number of days with severe oxygen depletion (i.e. <15% of saturation) by more than 50%.

引用

页码：55 / 64

页数：9

共 25 条

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