LIFE URBASO is evaluating close-to-nature forestry practices for the protection of surface water resources for human consumption and biodiversity, aiming to enhance climate resilience and the bioeconomy. The applied management approach is based on continuous cover forestry and respect for the natural growth and regeneration processes of forests. It promotes the components, structures, and processes characteristic of natural forests, thereby improving species and structural diversity, variation in tree sizes and developmental stages, and a range of habitats, including tree-related habitats and deadwood.
In this context, NEIKER has established 24 study plots (with an 18-meter radius), 12 in coniferous plantations and 12 in eucalyptus plantations. The geolocation, height, and diameter at breast height (DBH) of all trees within each study plot have been recorded. Additionally, four subplots (2x2m) have been established within each plot to assess the coverage of vascular and non-vascular plants. Soil samples have also been collected from these subplots to analyze soil carbon stocks. Finally, in each plot, Wildlife Acoustics Song Meter recorders have been placed on a central tree at a height of 1.5 meters above the ground to monitor bird diversity using bioacoustics. The main advantage of acoustic monitoring is that the devices can be left in place and programmed to inspect regularly with high temporal resolution over long periods. LIFE URBASO specifically monitors breeding bird presence, so recordings are conducted in the spring.
Preliminary results indicate that coniferous plots have an average of 35 trees, while eucalyptus plantations have an average of 74. Bioacoustic indices show significantly lower bird species richness in eucalyptus plantations compared to coniferous stands. The monitoring and data analysis will be completed by the end of the project.
NEIKER established 26 study plots (with an 18-meter radius), where the following variables were recorded: the position of each tree within the plot, DBH and height. Besides it was measured all vascular and non-vascular plants cover in four square subplots (2x2m) in each plot, as well as audio recordings. 12 study plots were in conifer plantations, 12 in eucalyptus plantations
