thesis - Theses

Cerna K. et al.
Pinus mugo threatens butterflies in Sudetes Mts.
habitats (Benes et al. 2000).
The traps were made of plastic pans (upper diameter: 13 cm, depth: 6 cm) and
painted inside with yellow Industrol 6200. We filled them with detergent water solution
(1 ml of detergent per 1 l of water, about 2 cm deep). We spaced them along the transects
approx. 20 m apart from each other at each study site (with larger sites having more traps)
in the Hruby Jesenik Mts. The traps were exposed during the entire course of indigenous
Lepidoptera species occurrence (Konvicka et al., 2002; Kuras et al., 2001, 2003) from
July 15 to September 3 in 2005 and checked every week; there were seven checks in total
(Table 1). We sieved the contents of the traps andrecorded species and sex of trapped
butterflies (Table 2).
#Table 1 and Table 2 approximately here#
2.3 Vegetation classification
Vegetation classification was based on the Habitat Catalogue of the Czech Republic
(Chytry et al., 2001) which specifies habitats according to dominant, diagnostic and other
plant species. There were five habitat types present in the studied alpine sites: (1) Alpine
heathlands dominated by Calluna vulgaris; (2) Subalpine Vaccinium vegetation
dominated by Vaccinium myrtillus and Vaccinium vitis-idaea; (3) Alpine grasslands
dominated by Avenella flexuosa, Nardus stricta, and Festuca supina; (4) Subalpine tallherb
vegetation dominated by Molinia coerullea; and (5) Pinus mugo scrub dominated by
dwarf pine. Vegetation cover was analyzed in percent according to the above mentioned
habitat types (1 - 5) within 10 m diameter around each trap and proportional habitat
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