Biodiversity is part of ecosystem functioning. It is largely stimulated by the micro-habitats, which are real little living environments sheltered by the trees. The micro-habitats are havens very varied depending of the morphology of the trees.
We talked a lot about forests, of their important role for biodiversity and of plentiful ecosystem services returned by trees to society.
Trees "drink" water from the ground, and evacuate a large part of this water by evaporation and the transpiration of their foliage.