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National Large-Scale Wetland Creation in Agricultural Areas-Potential versus Realized Effects on Nutrient Transports
Halmstad University, Sweden.
Linköping University, Department of Physics, Chemistry and Biology. Linköping University, Faculty of Science & Engineering.
Halmstad University, Sweden.
Halmstad University, Sweden.
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2016 (English)In: Water, ISSN 2073-4441, E-ISSN 2073-4441, Vol. 8, no 11, article id 544Article in journal (Refereed) Published
Abstract [en]

During 2007-2013, the Swedish Board of Agriculture granted support within a national program to about 1000 wetlands, corresponding to a 5300-hectare wetland area, with the dual goal to remove nutrients from water and to improve biodiversity in agricultural landscapes. The aim of the present study was to compare the effects on nutrient transports that are realized within the national program to what could be obtained with the same area of wetlands if location and design of wetlands were optimized. In single, highly nutrient-loaded wetlands, a removal of around 1000 kg nitrogen and 100 kg phosphorus per hectare wetland area and year was estimated from monitoring data. Statistical models were developed to estimate the overall nutrient removal effects of wetlands created within the national program. Depending on model, the effect of the national program as a whole was estimated to between 27 and 38 kg nitrogen and between 2.7 and 4.5 kg phosphorus per hectare created wetland area and year. Comparison of what is achieved in individual wetlands to what was achieved in the national program indicates that nutrient removal effects could be increased substantially in future wetland programs by emphasising location and design of wetlands.

Place, publisher, year, edition, pages
MDPI AG , 2016. Vol. 8, no 11, article id 544
Keywords [en]
constructed wetlands; nitrogen; phosphorus; removal; retention; catchments
National Category
Water Engineering
Identifiers
URN: urn:nbn:se:liu:diva-133755DOI: 10.3390/w8110544ISI: 000389660700067OAI: oai:DiVA.org:liu-133755DiVA, id: diva2:1063822
Note

Funding Agencies|Bertebos Foundation; Federation of Swedish Farmers (LRF); Sparbanksstiftelsen Kronan; Swedish Board of Agriculture; Swedish Water Management Research Program (VASTRA) - Swedish Foundation for Strategic Environmental Research (MISTRA); Swedish Research Council for Environment, Agricultural Sciences and Spatial Planning (Formas) [21.5/2003-1111, 215-2005-507]

Available from: 2017-01-11 Created: 2017-01-09 Last updated: 2018-03-13

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