Introduction and Landscape Character
Šumava is the largest national park in the Czech Republic, covering 680 km² along the southwestern border with Bavaria. Together with the adjacent Bayerischer Wald national park in Germany, it forms one of the largest continuous forest protected areas in Central Europe — a combined territory exceeding 1,300 km². Both parks have been jointly recognised as a UNESCO biosphere reserve since 1990.
The Šumava plateau is an ancient peneplain — a landscape worn flat by millions of years of erosion — sitting at elevations between 800 and 1,378 metres (Plechý). The plateau surface is interrupted by rounded summits, glacially formed lake basins, and an extensive system of peat bogs and wet meadows that accumulated since the last ice age. The Vltava, Otava, Úhlava and Úšava rivers all have their sources within the park, making it a significant water tower for southern Bohemia.
The Ancient Forest and Natural Succession
The most scientifically significant aspect of Šumava is the survival of near-primeval Norway spruce (Picea abies) forest stands in the core zone. These stands — sometimes referred to locally as prales (ancient forest) — have developed without significant human management for several centuries. The structural complexity they exhibit differs fundamentally from managed plantation forests: multiple canopy layers, abundant standing and fallen deadwood, and a rich assemblage of fungi, lichens and bryophytes dependent on decaying substrate.
From the late 1990s, a bark beetle (Ips typographus) outbreak of considerable scale spread across parts of the core zone, killing large areas of mature spruce. This generated a lengthy political and scientific dispute between those advocating chemical or mechanical intervention and those who argued for non-intervention in accordance with national park principles. The park administration ultimately allowed natural processes to continue in core zone areas. Two decades later, results from this decision are measurable: natural spruce regeneration is established across the former outbreak zone, structural diversity has increased, and populations of deadwood-dependent beetle and fungus species have expanded.
Bark beetle-affected spruce stands in Šumava. The non-intervention policy in core zones has allowed natural forest succession to proceed (Wikimedia Commons, CC BY-SA)
Peat Bog Systems and Rare Flora
Šumava contains the most extensive peat bog system in the Czech Republic. The raised bogs — vrchoviště — developed in waterlogged plateau depressions where cold temperatures and high rainfall prevented the decomposition of organic matter. The result is an accumulation of peat, in some locations exceeding four metres in depth, that stores significant quantities of atmospheric carbon and maintains a distinctive flora of cold-adapted and moisture-dependent species.
Sphagnum mosses (Sphagnum spp.) form the structural foundation of the raised bogs, creating the waterlogged, acidic conditions that exclude most other plants. Within these sphagnum mats, the following species occur:
- Round-leaved sundew (Drosera rotundifolia) — an insectivorous plant that supplements nutrients on the nutrient-poor bog surface through capture of small insects
- Bog rosemary (Andromeda polifolia) — a low evergreen shrub confined in the Czech Republic almost exclusively to Šumava and Krkonoše
- Mud sedge (Carex limosa) and sparse cottongrass (Eriophorum vaginatum) in wetter bog hollows
- Pinus rotundata — a bog pine subspecies adapted to waterlogged acidic conditions, forming scattered krummholz patches around bog margins
The Šumava bog pine communities (Pinus rotundata) are particularly significant — this taxon, considered a distinct subspecies or variety of Scots pine, occupies bog margins and wet peaty soils. Its genetic distinctiveness from upland Scots pine populations has been confirmed through molecular studies.
The Černé jezero (Black Lake) and Čertovo jezero (Devil's Lake) near Železná Ruda are the two largest glacial cirque lakes in the Czech Republic, both within the park. Their water is exceptionally clear and nutrient-poor. Amphibian communities in and around these lakes include the alpine newt (Ichthyosaura alpestris) and the fire salamander (Salamandra salamandra).
Eurasian Lynx — Ecology and Population Status
Šumava holds the most significant population of Eurasian lynx (Lynx lynx) in Central Europe outside of the Carpathians. The species was extirpated from the Bohemian Forest by the mid-19th century; reintroduction was carried out in the Bavarian Forest in 1970–1971 using animals from Slovakia. The population expanded naturally into what is now the Czech side of the park through the 1970s and 1980s.
Camera trap monitoring coordinated between the Šumava National Park administration and Bayerischer Wald has documented between 40 and 70 individual lynx across the cross-border area in recent survey cycles, though population estimates carry uncertainty due to the species' low density and large home ranges (individual males maintain territories of 200–300 km²). Genetic sampling from scat and tissue material indicates moderate heterozygosity, with some evidence of inbreeding depression in the isolated Bohemian-Bavarian population relative to Carpathian reference populations.
The lynx diet in Šumava consists primarily of roe deer (approximately 70% of prey biomass), supplemented by red deer calves and, less frequently, chamois where they occur at the park boundary. Predation on livestock is documented but relatively rare given the predominance of forest habitat; compensation schemes for confirmed livestock losses have been in place since the early 2000s.
European Beaver and Riparian Habitat
The European beaver (Castor fiber) was reintroduced to Šumava in 1991 following absence from the region for several centuries. The current population of several hundred animals has established dam complexes across numerous small tributaries, with measurable effects on riparian hydrology. Beaver-created ponds and waterlogged zones have increased wetland area along certain stream corridors by an estimated 35–40%, expanding breeding habitat for amphibians, aquatic invertebrates and wading birds.
The Eurasian otter (Lutra lutra) is widespread throughout the park's river network. Both species coexist on the same waterways without significant documented competition, occupying somewhat different ecological niches: beavers are predominantly herbivorous and modify the habitat structurally, while otters focus on fish and amphibians.
Ecological Research and Cross-Border Programmes
The Šumava–Bayerischer Wald complex is one of the most studied forest conservation systems in Europe. Long-term research plots established in the 1990s have yielded data series covering forest succession dynamics, soil carbon stocks, hydrological regimes, large mammal population trends and bird community structure that span more than three decades.
A joint species monitoring programme between Czech and German park authorities tracks lynx, wolf (occasional dispersing individuals have been recorded since 2019), beaver and selected bird species on a coordinated annual schedule. Data from this programme feed into broader European carnivore management frameworks coordinated through the Czech Nature Conservation Agency and its German counterparts.
Full documentation of the park's scientific programmes and ecological management framework is maintained by the Šumava National Park Administration.