Vegetation Science Group

Department of Botany and Zoology | Faculty of Science | Masaryk University

Vegetation of the Czech Republic

Association KCA01
Dryopterido dilatatae-Pinetum mugo Unar in Unar et al. 1985

Dryopterido dilatatae-Pinetum mugo

Photo on botanickafotogalerie.cz

This association includes 0.5–2 m tall scrub of Pinus mugo, which locally covers extensive areas on nutrient-poor acidic soils in the subalpine belt of the Krkonoše Mountains. The canopy can be open or closed. Near the alpine timberline, it may contain stunted individuals of Picea abies or Sorbus aucuparia. The herb layer is species-poor with acidophilous grasses such as Avenella flexuosa, Calamagrostis villosa and Nardus stricta, dwarf shrubs such as Vaccinium myrtillus and V. vitis-idaea and acidophilous dicot herbs. In the Krkonoše Mountains the altitudinal belt in which this vegetation type is continuous ranges from 1230 to 1500 m a. s. l., but small patches can occur on avalanche tracks as low as 1050 m. In the Czech part of the Šumava Mountains this association occurs as azonal vegetation, forming small patches on talus slopes at altitudes of 1080–1360 m. Plantations of non-native Pinus mugo in the Hrubý Jeseník and Králický Sněžník Mountains are floristically and physiognomically similar to the natural stands of this association.

Orig. (Unar et al. 1985): Dryopterido-Pinetum mughi Unar as. nova (Dryopteris dilatata)

Syn.: Vaccinio myrtilli-Pinetum mugo Hadač 1956 (§ 31, younger homonym; non Vaccinio myrtilli-Pinetum mugo Morton 1927), Vaccinio myrtilli-Pinetum mugo Jeník 1961 (§ 31, younger homonym)

Diagnostic species: Pinus mugo; Calamagrostis villosa, Gentiana asclepiadea, Homogyne alpina, Trientalis europaea, Vaccinium myrtillus, V. vitis-idaea; Cetraria islandica, Dicranum fuscescens

Constant species: Picea abies, Pinus mugo; Avenella flexuosa, Calamagrostis villosa, Homogyne alpina, Trientalis europaea, Vaccinium myrtillus, V. vitis-idaea; Cetraria islandica

Dominant species: Pinus mugo; Avenella flexuosa, Calamagrostis villosa, Vaccinium myrtillus; Dicranum scoparium

Formal definition: Pinus mugo cover > 25 % AND (Vaccinium myrtillus cover > 50 % OR Group Festuca supina OR Group Trientalis europaea) NOT Group Eriophorum vaginatum NOT Group Veratrum lobelianum NOT Sphagnum capillifolium s. l. cover > 5 % NOT Sphagnum magellanicum cover > 5 % NOT Sphagnum recurvum s. l. cover > 5 % NOT Sphagnum russowii cover > 5 %

Source: Chytrý M. (2013): KCA01 Dryopterido dilatatae-Pinetum mugo Unar in Unar et al. 1985. In: Chytrý M. (ed.), Vegetace České republiky. 4. Lesní a křovinná vegetace [Vegetation of the Czech Republic 4. Forest and shrub vegetation]. Academia, Praha, pp. 159-163.