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64. Salabka Natural Monument (PP) |
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Steep slope with dominant heather cover below the wooded margin of the
Bohnice plateau, best visible from the upper part of the K Bohnicím street
as a slope juxtaposed to the vineyard of the same name. Cadastre: Troja.
Area: 0.8499 ha. Elevation: 225 - 260 m above sea level. Established by
the Ordinance of Prague Municipality No. 4/1982 of May 27, 1982.
Protection of the heath with adjacent xerophilous steppe vegetation and
characteristic fauna.
Dark grey to black greywackes with shale intercalations forming part of
the Kralupy-Zbraslav group of the Upper Proterozoic. Generally monotonous
strata inclination (about 30o towards Northwest). Slight regional metamorphosis.
Themother rocks are not covered with any Quaternary sediments, but merely
with a shallow layer of weathered detritus and shallow soils of ranker
type.
According to vegetation reconstruction the area used to be covered with
a woodrush oak wood. At present it is covered with the community of the
heather and the cypress spurge, alternating with tnermophilous grass covers
in shallow soil-filled notches, consisting chiefly of the community of
Scabiosa ochroleuca and Brachypodium pinnatum. The slope foot is becoming
overgrown with thermophilous shrubs, weeds and ruderal plant species.
Characteristic invertebrate species bound with theheather, such as Lochmaea
suturalis and Altica oleracea breddini from the leaf beetles, Amara infima
and Bradycellus ruficolis from the ground beetles, further the steppe wingless
snout beetle species of Trachyphloeus bifoveolatus, T. asperatus and Harpalus
rufipalpis. The butteflies are represented by both swallowtail species,
the spiders e.g. by Lycosidae.
No woods. The heath was converted in the past toa pasture with occasional
burning. Without this exploitation bringing about the rejuvenation of perennial
heather shrubs or enabling the germination of seeds from a seed bank after
burning the heath ages and after a certain period (of some 25 years) it
withers and dies in the whole area. Therefore, it is recommended either
to introduce regular sheep grazing (approx. 5 animals per 1 ha per year)
or organize controlled burning in winter successively in small patches
at about 10 years intervals. The area is protected with a fence.
Kubíková (1976, 1986), Kučera, Kettnerová (1994).
The Salabka natural monument provides protection to a large thermophilous heath.
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Protected areas | CONTENTS |
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