The 4th tree census was realized at Boubin natural forest (46ha) through May-June. Initial survey at Hadecka planinka research plot (10ha) followed on July. All live and dead stems with diameter of 10cm+ were (re-)measured.
The fourth census have been started at Salajka natural forest in May. Preceding whole-area measurements were made in 1974, 1994 and 2007.
Repeated census at Zofin ForestGEO plot (25 ha) has begun, 5 year after the initial survey. All stems with DBH of 1cm and more would be (re-)measured.