Postřekovské rybníky: Mapping the Protected Wetland Landscapes of the Plzeňský kraj Region

The Postřekovské rybníky reserve was formally established in 1990, after a period in which many small pond systems in western Bohemia had been simplified, drained, or placed under more intensive use. The protected designation was intended to safeguard what remained of the traditional fishpond landscape between Postřekov and Klenčí pod Čerchovem, along with its associated wet meadows and biological diversity.

Although the ponds themselves are considerably older, dating back to the long history of fish farming in the Bohemian lowlands and foothills, the reserve marks a turning point in how the landscape is treated. It shifted the area from being simply a working agricultural landscape to being recognized also as a conservation site of regional and national importance. Subsequent surveys documented more than 300 vascular plant species and highlighted the reserve's exceptional value for breeding and migratory birds, reinforcing its status as a wetland of supralocal significance.

The landscape of Postřekovské rybníky is shaped by a dense mosaic of small water bodies set into gentle, low-lying terrain near the foothills of the Czech, or Bohemian, Forest. The reserve rests at elevations roughly between 416 and 434 metres above sea level, an altitude that supports cool, moisture-retaining conditions ideal for wetland vegetation.

Rather than dramatic landforms, the scene here is one of subtle repetition: a chain of more than twenty small fishponds linked by the floodplain of the Klenečský stream, with damp meadows and reed fringes between them. The ponds are small and irregularly shaped, reflecting their historical origins as village-scale fish farms rather than large industrial reservoirs. Together with their surroundings, they create a textured environment of open water, marshy edges, grassy strips, and scattered wet woodland.

This fine-grained terrain is exactly what gives the reserve its character. The visible landscape is not spectacular in the alpine or mountain sense, but it is quietly intricate, with small differences in elevation and soil moisture producing a patchwork of habitats within a relatively compact area.

Ecologically, Postřekovské rybníky is defined by its pond and meadow complex. The combination of open water, shallow pond edges, reed beds, and surrounding wet grassland produces a layered environment where aquatic, marsh, and meadow species can be found within short distances of one another. This variability is central to the reserve's biodiversity.

Botanists have recorded more than 300 species of vascular plants across the site, a high figure for an area of about 96.5 hectares and a clear indication of how rich a traditional fishpond landscape can be. The mix of permanently wet pond margins, seasonally flooded meadows, and drier grassy patches supports a wide range of wetland, meadow, and ruderal plants adapted to changing water levels and traditional mowing regimes.

The pond system also creates favorable conditions for invertebrates, including rare ground beetles such as Amara concinna and uncommon leaf beetles, which in turn support the broader food web on which the reserve's birdlife depends. The site's classification as a wetland of supralocal importance reflects this combination of botanical richness, invertebrate diversity, and stable aquatic habitats.

The birdlife of Postřekovské rybníky is its most prominent natural feature. The reserve is recognized both as a nesting ground for several important species and as a stopover during migration periods, giving it year-round ornithological value.

Among breeding species, the white-spotted bluethroat, the Central European subspecies of the bluethroat, is the reserve's signature bird and a major reason for its protected status. The marsh harrier also nests here, along with the Eurasian penduline tit, various ducks, and a range of waders that use the pond margins and wet meadows for feeding. The combination of open water, reed beds, and wet grassland provides nesting cover, foraging habitat, and feeding edges in close proximity.

During migration the reserve becomes a temporary refuge for additional species. Curlews, hen harriers, red-crested pochards, and several species of godwits and other shorebirds pause here, drawn by the same qualities that support breeding birds: a network of shallow, productive ponds set within meadows. This dual role, breeding area plus migratory stopover, gives the reserve a strong identity as a wetland of national importance for bird conservation in the western Bohemian region.

The conservation significance of Postřekovské rybníky lies in its preservation of a small but exceptionally well-kept traditional fishpond landscape, and in the biological value that landscape continues to support. Protected formally in 1990 and administered by the Agency for Nature Conservation and Landscape Protection of the Czech Republic, the reserve safeguards roughly 96.5 hectares of ponds and wet meadows along the Klenečský stream.

The site's value extends well beyond its boundaries. It is classified as a wetland of supralocal significance, reflecting its botanical richness, its diversity of breeding and migratory birds, and its importance for rare invertebrates adapted to traditional pond systems. The protection status is intended not only to maintain current habitats but also to preserve the centuries-old pattern of extensive pond management that produced them.

In practical terms, the reserve demonstrates how continued, light-intensity human use of ponds and meadows can remain compatible with high biodiversity. Conservation here depends less on excluding human activity than on preserving the careful balance of water management, mowing, and traditional fish farming that keeps the mosaic of habitats intact.

The ponds and meadows around Postřekov sit within a region with a long tradition of small-scale fish farming and village-based land management. Local communities historically built and maintained the chain of more than twenty small ponds not only for fish production but also as part of a working rural landscape that combined water, meadow, and settlement.

This long-standing interaction between people and the land is an essential part of the reserve's identity. The wet meadows have been shaped by traditional mowing and grazing regimes, and the ponds continue to be managed in ways that sustain both their economic and ecological roles. As a result, the reserve is not a wilderness retreat but a living cultural landscape, in which ongoing human care is part of why the site is biologically valuable.

The standout qualities of Postřekovské rybníky are its dense network of small, traditionally managed fishponds, its exceptionally rich wetland flora, and its strong bird focus, particularly as a breeding area for the white-spotted bluethroat and a stopover for migratory waders and waterfowl. The reserve's value rests equally on its habitats and on the centuries-old pattern of land use that continues to shape them.

Its most distinctive trait is that all of these elements are concentrated into a compact, accessible area of roughly 96.5 hectares, where ponds, meadows, reed edges, and floodplain form a coherent and biologically rich whole. This combination of scale, biological quality, and cultural continuity makes Postřekovské rybníky a particularly representative example of the traditional Bohemian fishpond landscape.

The reserve rewards visits across much of the year, but its character shifts noticeably with the seasons. Late spring and early summer bring active breeding birds, dense meadow vegetation, and the most complete expression of the site's overlap between wildlife and traditional land use, while autumn migration brings a wider variety of waterbirds and waders passing through or pausing on the ponds.

Wet conditions dominate the landscape in any season, so cooler or milder days often offer the best experience for walking, observation, and quiet enjoyment of the meadows and pond margins. The traditional mowing of surrounding meadows, usually carried out in summer, also affects the visual texture of the reserve, opening up views across the fields and creating fresh conditions for late-season plant and insect activity.