Vojtěch Lanta , Jiří Doležal, Jan Samata

Vegetation patterns in a cut-away peatland in relation to abiotic and biotic factors: a case study from the Sumava Mts., Czech Rebuplic

Lanta V., Doležal J., Samata J. Vegetation patterns in a cut-away peatland in relation to abiotic and biotic factors: a case study from the Sumava Mts., Czech Rebuplic.

Tiivistelmä

We studied the natural regeneration of a cut-over peat bog in the Sumava Mountains, Czech Republic. The spontaneous revegetation by vascular plants has been limited by extreme abiotic conditions left after peat mining. Only 1-2% of the total area was recolonized by Sphagnum mosses. This was mainly because drainage channels are still drying out the bog. Only plants tolerant to water stress such as Juncus effusus, Molinia caerulea, Eriophorum angustifolium and E. vaginatum were able to establish there. A key species colonizing bare surface is a clonal plant E. angustifolium. It forms circular polycormons of densely aggregated ramets. As in other radially spreading phalanx plants, the oldest (central) part of the system gradually dies, previously connected ramets become separated, and ring polycormon becomes open to recolonization by other plant species. We analyzed the relationships between species richness of the ring and their size, percentage litter cover, distance to seed sources, and soil fertility. The number of plant species was higher in the middle of the polycormons. The soil was more fertile in the central area than in the surroundings. We conclude that the restoration of highly disturbed habitats can be facilitated by clonal behavior of pioneer populations.

Avainsanat
fertilization; potassium; volume growth; refertilization; pine mire; phosphorus yield

Vastaanotettu 31.10.2017 Julkaistu 1.1.2004

Katselukerrat 1626

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