The continuous thinning of trees is an integral part of forest management along the river, and special care is taken to leave dead wood undisturbed. The growth of native tree species that are appropriate to the location is also encouraged. Deadwood should ideally remain in sunny locations, either on the shore or in the water to promote thermophilic species such as reptiles and various species of insects. Any work deemed necessary to rejuvenate the woodlands is carried out in predefined and relatively small areas and never on a large scale that involves radical pruning. The riparian vegetation on the water’s edge serves not only as a nesting and breeding site for a multitude of birds, but also as a food source. Many wood-living insects user old trees and deadwood as their habitat. Special care is therefore taken with regard to the management of old trees to ensure that trees with cavities and insect nests are left undisturbed at sensitive times of the year. Target species such as cormorants, grey herons, black storks and white tailed eagles have all made these woodlands their home, as have a vast number of woodpeckers and other birds that nest in holes in trees. "Problem trees", which represent potential hazards to human health or infrastructure, are examined separately by external experts and assessed according to their conservation value, risk potential and structural characteristics. Recommendations are then made and the appropriate action taken