water bodies

One of the distinctive aspects of the karst environment is the almost total absence of surface water. This condition is mainly due to the permeability of the bedrock which is filled with cracks. The water therefore flows preferentially along underground paths, leaving the surface free of aquatic environments.
The few exceptions include the lakes Pietrarossa and Doberdò in the Karst towards Gorizia and the Rosandra torrent in the province of Trieste. The ponds, small depressions in the ground where rainwater collects were created with the help of clayey material and were used for to provide animals with drinking water but also to supply water for local populations.
It is difficult to define a zoning of the vegetation growing around these water bodies, since it varies greatly depending on the structure, depth and exposure of the pond. They represent important stopover places (stepping stones) that connect wetlands with each other, allowing hygrophilous species to disperse and thus acting as ecological corridors (Nimis et al., 2006).
In the system of ponds present at Carsiana you can see hygrophilous species characteristic of these environments including Yellow Flag (Iris pseudacorus), and the Fen Ragwort (Senecio paludosus) occupying the strip which is subject to emersion and immersion. The shores on the other hand are home instead to the Jointed Rush (Juncus articulatus and the Hard Rush J. inflexus). In the deeper central part of the ponds can be seen species with floating leaves such as the European White Waterlily (Nymphaea alba) and the Yellow Pond-lily (Nuphar lutea).

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