Jezero

Jezero is a small nature reserve on the northern edge of the village of Vacenovice in the Hodonín district of South Moravia, Czech Republic. Covering just under 8 hectares, it protects a mosaic of wet and waterlogged meadows, a shallow water body, and willow-poplar groves with a rich herb layer. The site was granted legal protection in 2000 to preserve a botanically, zoologically, and scenically valuable wetland complex.

What does the landscape look like?

Jezero is a remnant of the once-common floodplain wetlands that used to line South Moravian rivers before large-scale agricultural drainage reshaped the region. A shallow pool sits at the heart of the reserve, ringed by reeds and sedge stands, while further from the water the terrain shifts into damp meadows and eventually into groves of willow and poplar. This layering of habitats within such a small footprint is what makes the reserve unusually rich for its size.

Which species is it protecting?

Botanists have recorded meadow thistle, the broad-leaved marsh orchid (Dactylorhiza majalis), and Davall's sedge (Carex davalliana) here — species tied specifically to wet meadows that have not been drained or fertilized. Their continued presence is a strong indicator of the site's ecological condition, since all three disappear quickly once groundwater levels drop or nutrient loads rise.

The wetland character of the reserve makes it especially valuable for amphibians. Species recorded at Jezero include the common spadefoot toad (Pelobates fuscus), which needs sandy, sun-exposed ground near shallow breeding pools, along with the European tree frog (Hyla arborea), the agile frog (Rana dalmatina), and several other frog species. Some reptiles also inhabit the drier margins of the site. This concentration of amphibians makes the reserve a notable point on the region's map of herpetofauna conservation.

Who looks after the reserve?

The site is managed by the Nature Conservation Agency of the Czech Republic, which monitors habitat conditions and oversees the management plan. In recent years, wetland restoration works have been carried out within the reserve, aimed at improving water retention and creating better conditions for both the aquatic vegetation and the amphibian populations that depend on it.

Frequently asked questions

Where exactly is Jezero located? The reserve lies on the northern edge of the village of Vacenovice, in the Hodonín district of the South Moravian Region in the Czech Republic.

How large is the protected area? It covers just under 8 hectares.

When was the area protected? Jezero received official nature protection status in 2000.

What are the most notable animals here? Amphibians dominate — particularly the common spadefoot toad, the European tree frog, and the agile frog, all of which rely on the reserve's shallow water and wet meadows to breed.

Can visitors walk through the reserve freely? As a protected natural area, Jezero calls for care from visitors — staying on marked paths and avoiding disturbance to plant and animal habitats is the expected approach.

What sets Jezero apart from other reserves in the region? Its small size combined with a dense layering of habitats — open water, reed beds, wet meadows, and willow-poplar groves — packs an unusually high concentration of protected species into a compact area.