CLEARANCE - CircuLar Economy Approach to River pollution by Agricultural Nutrients with use of Carbon-storing Ecosystems



  1. Walton C.R., Zak D., Audet J., Petersen R.J., Lange J., Oehmke C., Wichtmann W., Kreyling J., Grygoruk M., Jabłońska E., Kotowski W., Wiśniewska M.M., Ziegler R., Hoffmann C.C. 2020. Wetland buffer zones for nitrogen and phosphorus retention: Impacts of soil type, hydrology and vegetation. Science of the Total Environment 727, 138709. doi: 10.1016/j.scitotenv.2020.138709
  2. Jabłońska E., Winkowska M., Wiśniewska M., Geurts J., Zak D., Kotowski W. 2020. Impact of vegetation harvesting on nutrient removal and plant biomass quality in wetland buffer zones. Hydrobiologia, published: 28 April 2020. doi: 10.1007/s10750-020-04256-4 . Download: PDF
  3. Jabłońska E., Wiśniewska M., Marcinkowski P., Grygoruk M., Walton C.R., Zak D., Hoffmann C.C., Larsen S.E., Trepel M., Kotowski W. 2020. Catchment-Scale Analysis Reveals High Cost-Effectiveness of Wetland Buffer Zones as a Remedy to Non-Point Nutrient Pollution in North-Eastern Poland. Water 12, 629. mdpi: 2073-4441/12/3/629. Download: PDF
  4. Ziegler R. 2019. Viewpoint – Water innovation for a circular economy: The contribution of grassroots actors. Water Alternatives 12(2): 774-787. Download: PDF.
  5. Ziegler R. 2020. Paludiculture as a critical sustainability innovation mission. Research Policy 49, 103979. doi: 10.1016/j.respol.2020.103979 .

Master theses

  1. Winkowska M. 2020. Nitrogen removal processes by wetland buffer zones in Narew tributary, Master Thesis, University of Warsaw. Download: PDF
  2. Baumane M. 2019. Evaluating Wetland Restoration Success in Kratholm Catchment, Master Thesis, Aarhus University. Download: PDF
  3. Lewandowska M. 2019. Potential for wetland restoration in Odense River catchment and nitrogen removal, Master Thesis, Aarhus University. Download: PDF
  4. Kałuży J. 2019. Evaluation of the effectiveness of nitrogen removal through wetland buffer zones within lowland river catchments.

Technical reports

  1. Banaszuk P. 2020. Biomass from wetland buffer zones - utilization and recycling options Download: PDF
  2. Bender M., Ziegler R., Lenz J., Vilovic V., Köppen L. 2019. Economic principles and instruments to support restoration of Wetland Buffer Zones (WBZ) and paludiculture in a circular economy approach Download: PDF
  3. Christ L., Schrautzer J., Trepel M. 2019. Approaches to determine the nutrient retention value of wetlands Download: PDF
  4. Giergiczny M., Valasiuk S. 2020. Report on cultural ecosystem services and non-use value of rivers in case catchments under contrasting scenarios Download: PDF
  5. Ziegler R. 2020. Assessment study of barriers and opportunities regarding Wetland Buffer Zones and Wet Agriculture Download: PDF
  6. Lewandowska M., Hoffmann C.C. & Kjeldgaard, A. 2020. Potential for further wetland restoration in the odense river catchment and nitrogen and phosphorus retention. Aarhus University, Department of Bioscience. Scientific Report from DCE – Danish Centre for Environment and Energy No. 396. Download: PDF

Workshop presentations and reports

  1. Aarhus Workshop
  2. Greifswald Workshop
  3. Warsaw Workshop Link: Workshop output


  1. Kotowski W., Jabłońska E. (Eds.) 2020. WETLAND BUFFER ZONES: the solution we need!
    Download: PDF
  2. Kotowski W., Jabłońska E. (Eds.) 2020. Bagienne strefy buforowe: nasze wyjście bezpieczeństwa
    Download: PDF
  3. Kotowski W., Jabłońska E. (Eds.) 2020. Gewässerbegleitende Feuchtgebiete: wichtig für die Umwelt
    Download: PDF


  1. Brussel declaration, 2018
    Download: PDF
  2. Kotowski W., Jabłońska E., Wilk M., Zak D. (Eds). 2020. WETLAND BUFFER ZONES: the solution we need! Guidelines of the CLEARANCE project.
    Download: PDF
  3. Kotowski W., Jabłońska E., Wilk M., Zak D. (Eds). 2020. BAGIENNE STREFY BUFOROWE – nasze wyjście bezpieczeństwa. Wnioski z projektu CLEARANCE.
    Download: PDF

More about the CLEARANCE project