Stročov National Nature Monument

Stročov NNM was declared in 1990 on an area of 2ha and is managed by the Blaník Protected Landscape Area Administration. The locality includes wet meadows which are predominantly covered with vegetation communities from the Molinion (moor-grass) and Violion caninae (dog violet) alliances. The protected area lies below the dam wall of the small Stročovský rybník Fishpond on the north-eastern edge of the village of Líbeznice in the Středočeský kraj - Central Bohemian Region. Rare plant species, such as the pink stonecrop (Sedum villosum) grow on the meadows.
 
The vegetation is dominated by meadow communities of the Molinion alliance and tall-herb growths of the Calthion alliance, passing into sedge communities of the Caricion fuscae. Rare plants which grow in this part of the monument include devilsbit scabious (Succisa pratensis), purple moor-grass (Molinia caerulea), great burnet (Sanguisorba officinalis), marsh valerian (Valeriana dioica), marsh cinquefoil (Potentilla palustris), the ragwort Tephroseris crispa and carnatian sedge (Carex panicea). We can also find an abundant population of broad-leaved marsh orchids (Dactylorhiza majalis) on the meadows. Short-stemmed grasslands of the Violion caninae have developed on the drier, northern part of the monument and here we can also observe the dog violet (Viola canina), mat-grass (Nardus stricta) and numerous louseworts (Pedicularis sylvatica).
 
The most valuable vegetation type at Stročov are the low spring area growths of the Cardamino-Montion, which occur along the shallow meadow water channels, with a richly-developed moss layer and species including the marsh speedwell (Veronica scutellata), brooklime (Veronica beccabunga) and procumbent pearlwort (Sagina procumbens). Numerous pink stonecrops (Sedum villosum) grow here as they prefer to grow amongst low, spring-area mosses such as Philonotis fontana and Bryum pseudotriquetrum.
 
In addition to the typical invertebrates of wet meadows, the flea beetle Antrophagus caraboides and the leaf beetle (Phyllotreta aerea) live on the site, as do the sub-montane Diptera species such as the long-legged fly Medetera dichrocera and the parasitic fly Siphona setosa. The occurrence of the fleabeetle Ochthephilum fracticorne, the fruit fly Cryptaciura rotundivestris and the blow fly Pollenia labialis is of botanical significance
 
The meadow is traditionally cut by local farmers once or twice a year and the hay is dried and removed. The maintenance of the current water regime on the meadows is of great importance and they should not be drained – except for the small water channels, alongside which the pink stonecrop grows. These channels are sensitively renewed every 3 – 5 years, so that they do not become overgrown with sedges and other strongly competitive vegetation. Before this intervention can be carried out, the pink stonecrops are raised along with their moss carpets and returned to their places after the channels are renewed. The species-rich meadow is home to abundant growths of lousewort and broad-leaved marsh orchid but the main subject of the protection at Stročov is the numerous population of the critically endangered pink stonecrop (Sedum villosum).
 
The territory is accessible along the dam wall of the Stročovský fishpond, from where visitors can look out over the meadow, and this dam wall can be reached from the Nové Líbeznice road. The actual wet meadows are not easily accessible and would easily be damaged if too many visitors trampled on them.