Mapping the target species of Dalmatian scilla or amethyst meadow squill

Mapping the target species of Dalmatian scilla or amethyst meadow squill

Dalmatian scilla (Chouardia litardierei) is an endemic Illyrian-Balkan species that grows on open, occasionally flooded or wet habitats, mainly meadows, grasslands, and basophilic outcrops. As it is a strictly protected species, and a target species of the Natura 2000 Ecological Network HR200918 in the wider area of ​​the Krka National Park, it is necessary to investigate and monitor the state of the population.

Mapping of the Dalmatian scilla was carried out in May 2024 by the firm Oikon d.o.o. Institute for Applied Ecology, when the state of the plant population and the habitat was assessed. From 19 potential sites, the species was recorded in 10 of them. The abundance of the species was estimated using the transect method, and different densities and amounts were determined depending on the degree of succession and the condition of the habitat. The site located on the right bank of the Krka River, near Visovac Lake, stood out as a very well-preserved habitat with the greatest population density and abundance.

As the greatest threat to the species represents the reduced use and maintenance of grasslands, as well as the cessation of grazing and mowing, succession occurs, along with the disappearance of a suitable habitat for the species. Given that the Dalmatian scilla grows on wet flooded meadows along the Krka River, one of the essential threats would certainly be climate change, which could further harm the population.

In order to ensure continuous favorable conditions, the species needs to be monitored regularly, with some sites restored, and localities in good condition maintained, while noted threats that threaten the survival of the population should be prevented in a timely manner.