caa a22 4500 445892269 CHVBK 20180317145620.0 cr unu---uuuuu 170323e20111001xx s 000 0 eng 10.1007/s10750-011-0734-0 doi (NATIONALLICENCE)springer-10.1007/s10750-011-0734-0 Evaluation of nutrient retention in four restored Danish riparian wetlands [Elektronische Daten] [Carl Hoffmann, Brian Kronvang, Joachim Audet] During the last 15-20years, re-establishment of freshwater riparian wetlands and remeandering of streams and rivers have been used as a tool to mitigate nutrient load in downstream recipients in Denmark. The results obtained on monitoring four different streams and wetland restoration projects are compared with respect to hydrology, i.e. flow pattern and discharge of ground or surface water, retention of phosphorus (P), and removal of nitrogen (N). Furthermore, the monitoring strategies applied for quantifying the post-restoration nutrient retention are evaluated. The four wetland restoration projects are the Brede River restoration (including river valley groundwater flow, remeandering and inundation), Lyngbygaards River restoration (groundwater flow, irrigation with drainage water, inundation with river water and remeandering), Egeskov fen (fen re-establishment and stream remeandering) and Egebjerg Meadows (fen restoration and hydrological reconnection to Store Hansted River). Retention of phosphorus varied between 0.13 and 10kgPha−1year−1, while the removal of nitrogen varied between 52 and 337kgNha−1year−1. The monitoring strategy chosen was not optimal at all sites and would have benefitted from a knowledge on local hydrology and water balances in the area to be restored before planning for the final monitoring design. Furthermore, the outcome concerning P retention would have benefitted from a more frequent sampling strategy. Springer Science+Business Media B.V., 2011 Wetland restoration nationallicence Nutrient nationallicence Biogeochemistry nationallicence Nitrogen nationallicence Phosphorus nationallicence Nutrient removal nationallicence Hoffmann Carl Department of Freshwater Ecology, National Environmental Research Institute, Vejlsøvej 25, 8600, Silkeborg, Denmark aut Kronvang Brian Department of Freshwater Ecology, National Environmental Research Institute, Vejlsøvej 25, 8600, Silkeborg, Denmark aut Audet Joachim Department of Freshwater Ecology, National Environmental Research Institute, Vejlsøvej 25, 8600, Silkeborg, Denmark aut Hydrobiologia Springer Netherlands 674/1(2011-10-01), 5-24 0018-8158 674:1<5 2011 674 10750 https://doi.org/10.1007/s10750-011-0734-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-011-0734-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hoffmann Carl Department of Freshwater Ecology, National Environmental Research Institute, Vejlsøvej 25, 8600, Silkeborg, Denmark aut NATIONALLICENCE 700 1- Kronvang Brian Department of Freshwater Ecology, National Environmental Research Institute, Vejlsøvej 25, 8600, Silkeborg, Denmark aut NATIONALLICENCE 700 1- Audet Joachim Department of Freshwater Ecology, National Environmental Research Institute, Vejlsøvej 25, 8600, Silkeborg, Denmark aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 674/1(2011-10-01), 5-24 0018-8158 674:1<5 2011 674 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer