1. Laboratory of Silviculture, School of Forestry and Natural Environment, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
2. School of Forestry and Management of the Environment and Natural Resources, Democritus University of Thrace, Pandazidou 193, 68200 Orestiada, Greece
3. Laboratory of Floriculture, School of Agriculture, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
4. Laboratory of Soil Science, School of Agriculture, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
5. Laboratory of Forest Soil Science, School of Forestry and Natural Environment, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece