Tree holes
![Bildmontage_Tree holes](https://www.plus.ac.at/wp-content/uploads/2023/10/Bildmontage_Tree-holes-2000x838.png)
We investigate waterfilled tree holes and their inhabiting fauna as a further multitrophic metacommunity system with focus on anthropogenic influence, e.g. urbanization (see Urban tree holes) and forest management (see Biodiversity exploratories, Connect Plus).