Effektivität von Maßnahmen zur Reduktion der Phosphorbelastung der oberösterreichischen Fließgewässer | Effectiveness of measures to reduce the phosphorus load in Upper Austrian running water bodies
2014
Zessner, Matthias | Gabriel, Oliver | Kuderna, Max | Weinberger, Christine | Hepp, Gerold | Kovács, Ádám | Windhofer, Georg
Assessing the effectiveness of measures to reduce the phosphorus loads in bodies of water in the plains of catchment areas requires a comprehensive grasp of the interactions between human activities, resulting emissions, and their effects on those waters. A quantitative representation of the connection between emissions loads over different pathways and emissions concentrations, and which takes into account the retention in both land and water, is called for as an essential basis. Once this has been established, in the next phase the effects of local emission reduction measures can be evaluated, the suitability of said measures for implementation in a given region on the basis of the predominant local conditions and land use management can be determined, and the effectiveness of the respective models can be represented in the context of overall emissions and retention. The findings of related studies in Upper Austria show that erosion protection measures and/or measures to avoid erosive phosphorus emissions in running water bodies have the best potential for reducing phosphorus loads when they are precisely targeted (used in areas with a high degree of connectedness to bodies of water or adjacent to running waters).
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