The traces of forestry operations from former times can still be seen, with expansive stands of hybrid poplars. The overgrown stands of hthose poplars are thick in places.
In areas where logging operations formerly took place, National Park management is now planting native trees like the Black and White Poplar, grey alder, white elm, Prunus padus (hackberry), and willows.
Broad expanses of water are characteristic of these wetlands. Apart from the wide Petronell arm of the Danube, there are numerous forks and trenches which are connected to the river when waters are high. This makes it an ideal habitat for a variety of waterfowl.
Because the area is cut off from the main current, reed beds have been able to form. These are often used by the common moorhen and the little grebe. Even the purple heron may occasionally be sighted.
The countless shells that may be seen at low water levels are a sign of good water quality.
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