1. Institute of Agricultural and Environmental Sciences, Estonian Univ. of Life Sciences, Tartu 51006, Estonia.
2. Institute of Forestry and Rural Engineering, Estonian Univ. of Life Sciences, Tartu 51006, Estonia (corresponding author).
3. Water Engineer, Sweco, Kalmar 39235, Sweden.
4. Dept. of Biology and Environmental Sciences, Faculty of Health and Life Sciences, Linnaeus Univ., Kalmar 35195, Sweden.
5. Dept. of Separation Science, LUT School of Engineering Science, LUT Univ., Sammonkatu 12, FI-50130 Mikkeli 53850, Finland.
6. Institute of Forestry and Rural Engineering, Estonian Univ. of Life Sciences, Tartu 51006, Estonia.