Nove Mlyny middle reservoir (43)
Czechia, Europe
Site overview
KBA status: confirmed
Year of last assessment: 2002
National site name: Strední nádrz VDNM
Central coordinates: Latitude: 48.9000, Longitude: 16.6000
System: freshwater, terrestrial
Elevation (m): 172 to 180
Area of KBA (km2): 10.47886
Protected area coverage (%): 99.92
KBA classification: Regional
Legacy site: Yes
Site details
Site description: The Nové Mlýny Middle Reservoir (VDNM) is situated at the confluence of three Moravian rivers: the Dyje, Svratka, and Jihlava, surrounded by the towns of Dolní Vìstonice, Strachotín, Ivaò, and Pasohlávky. The area that was once covered by floodplain forests. The only remaining part of the village of Musov, now covered by water, is a small church with Romanesque foundations, which catches the eye as it emerges from the middle of the reservoir. The bottom of the reservoir was flattened only at some places before the reservoir was filled up with water. Thus the reservoir varies in depth and small islets emerge whenever the water level drops by just a little. At the current constant level (170.35 m above sea level), about 20 ha of islets in two main groupings emerge above the water: Nine islets at Dolní Vìstonice (so-called Písky) covering about 10 ha, and islets Kostelní, Høbitovní, Ivaòský and a complex of six depositions surrounding the Musov church and covering about 8 ha. At the above-mentioned constant water level, the area of the reservoir is 1,013 ha.
Rationale for qualifying as KBA: This site qualifies as a Key Biodiversity Area of international significance that was identified using previously established criteria and thresholds for the identification of Important Bird and Biodiversity Areas (IBAs) and for which available data indicate that it does not meet global KBA criteria and thresholds set out in the Global Standard.
Additional biodiversity: The area is an important breeding site, wintering site and migration stopover of migrating waterbirds - more than 20,000 waterbirds gather there regularly. The area is an important breeding site, wintering site and migration stopover of migrating waterbirds - more than 20,000 waterbirds gather there regularly.
Habitats
Land use: fisheries/aquaculture (97%) | hunting | nature conservation and research (100%) | water management (100%)
| IUCN Habitat | Coverage % | Habitat detail |
|---|---|---|
| Shrubland | 4 | |
| Forest | 2 | |
| Wetlands(Inland) | 90 | |
| Artificial - Terrestrial | 4 |
Threats
Summary of threats to biodiversity at KBA: Threats include recreational activities (angling and canoeing), pressure from which is expected to increase, and hunting (considerably reduced since 1998). `Other' threats are posed by water-level fluctuations, and the effects of nutrient enrichment and pollution. A management plan adopted in 1996 addresses some of these problems. 1996 also saw construction work begin on a biocorridor connecting riverine habitats above and below the reservoirs.