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Detail článku

Ročník:

55/2018

Název česky:

Píďalky Glacies alpinata a Psodos quadrifaria v Krkonoších, II. část: Recentní výskyt v západní části hřebenových partií a celkové shrnutí jejich rozšíření

Název anglicky:

Geometrids Glacies alpinata and Psodos quadrifaria in the Giant Mts, II. part: Recent occurrence in the western part of the ridges and the overall summary of their distribution

Autor (autoři):

Oldřich Čížek; Tomáš Kadlec; Tomáš Jor; Jiří Hadrava; Barbora Jelínková; Markéta Staňková; Barbora Dubská; Tomáš Flégl; Adam Malkiewicz

Klíčová slova česky:

alpínský stupeň, rozšíření, biotop, sudetská pohoří, Česko, Polsko

Klíčová slova anglicky:

alpine zone, distribution, biotope, Sudeten Mountains, Czechia, Poland

Od strany:

103

Do strany:

110

Abstrakt česky:

V roce 2016 a 2017 proběhl detailní průzkum rozšíření píďalek Glacies alpinata (Scopoli, 1763) a Psodos
quadrifaria (Sulzer, 1776) (Lepidoptera: Geometridae, Ennominae) na české a polské straně západní části vrcholových
partií Krkonoš. Tato práce navazuje na mapování obou druhů ve východní části Krkonoš (Čížek et al. 2016)
a přináší celkové shrnutí rozšíření obou druhů v Krkonoších.

Abstrakt anglicky:

A detailed survey of Glacies alpinata (Scopoli, 1763) and Psodos quadrifaria (Sulzer, 1776) (Lepidoptera:
Geometridae, Ennominae) on the Czech and Polish side of the western part of the Krkonoše Mts was carried out in
2016 and 2017. The article follows the mapping of these two species in the eastern part of the Krkonoše Mts (Čížek
et al. 2016) and brings a preliminary summary of the distribution of both species in relation to preferred habitat.

Souhrn anglicky:

The species Glacies alpinata occurs in both primary
treeless areas of the Giant Mts. In general, it was
more abundant and also more widespread on the
eastern part of the ridges across the inhabited biotopes.
Habitat requirements will be analyzed and
discussed in detail in a separate study. However, currently
it is possible to summarize that this species is
distributed in treeless areas of both ridges. The loose
edges of Pinus mugo stands were especially determined
to be the hotspots of its distribution. G. alpinata
also extends to biotopes with the occurrence
of Molinia caerulea or Calamagrostis villosa grasslands
(see Fig. 3). The species are present in places
where Vaccinium myrtillus, Vaccinium vitis-idaea or
Vaccinium uliginosum is typically dominant or have
very abundant occurrence. The places with G. alpinata
typically had the frequent presence of Calluna
vulgaris.
There were two sites which did not correspond with
this description. The first was the heathland on the
western slopes of the Vysoké Kolo/Wielki Szyszak at
an altitude of ca 1470 m above sea level (see Fig. 2).
In this biotope, Calluna vulgaris was dominant (coverage
of vegetation ca 60–80 %) with a minimum
of herbs and without Pinus mugo and other higher woody plants. The second place was on the peat bog
in the eastern treeless area of Čertova louka/Torfowisko
pod Smogornią (see Fig. 4). The species was
found on biotopes dominated by Carex spp. or Eriophorum
spp. with Oxycoccus spp. and Empetrum
spp. Species of the genus Vaccinium were only locally
present, while Calluna vulgaris occurred also in the
drier areas. Woody plants (Picea abies, Pinus mugo)
were present individually or in small groups, however,
G. alpinata occurred also in places without their
occurrence.
Psodos quadrifaria was found only on the eastern
primary treeless area. It is generally less widespread
in the Giant Mts than G. alpinata and also
reaches lower abundances. It occurs in similar
places as G. alpinata but is significantly more
bound to loose edges of the Pinus mugo stands
(see Fig. 3) and practically does not occur in open
biotopes.

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