Records by time
Zodariidae 0-19001901-19501951-20002001-2018
Zodarion germanicum (C. L. Koch, 1837) Not endangered 2x 2x 315x 81x 400x

Zodarion germanicum (C. L. Koch, 1837)

Czech namemravčík obecný
Threat levelNot endangered
Records400 nálezů, 59 kvadrátů
First record 1866, E. Bárta, Bárta 1869
Last record 2015 , Pavel Marhoul
Distribution areaEuropean - ME
Phytogeographic areaThermo, Meso
Původnost stanovišťclimax, semi-natural
Humidityvery dry, dry
StratumGround layer
Osvětlení stanovišťopen, partly shaded
Hojnost výskytuscarce probably
Altitude200-500

Bibliography

© Ota Zimmermann

Spiders of the Brdy Protected Landscape Area were studied. Material obtained from pitfall traps exposed during the years 2016–2017 at 15 different representative localities included a total of 4027 individuals belonging to 154 species of spiders. Cold tolerant species (e.g. Bathyphantes similis and Pocadicnemis carpatica) as well as thermophilic species (e.g. Lathys humilis and Zodarion germanicum) were recorded. The West European species Palliduphantes ericaeus reaches here the easternmost border of its  distribution, on the contrary the East European species Walckenaeria simplex has in this territory the western limit of its areal. A quarter of the recorded spider species is closely related to the original and natural habitats. Together with the published data and data from arachnological databases, the occurrence of 220 species of spiders is currently listed for the Brdy PLA, representing about 25 % of the total fauna of the Czech Republic. The results documented presence of interesting arachnofauna and confirm a high natural value of the given area.



© Ota Zimmermann

The invertebrates of the Macocha Abyss, Moravian Karst, Czech Republic, were collected in 2007–2008 and 222 species were identified in total. The relative abundance of individual taxa of land snails, harvestmen, pseudoscorpions, spiders, millipedes, centipedes, terrestrial isopods, beetles, and ants was evaluated. The cold-adapted mountain and subterranean species inhabit the bottom and lower part of the abyss, whereas the sun-exposed rocky margins were inhabited by thermophilous species. Macocha harbors several threatened species that are absent or very rare in the surrounding habitats. In the forest landscape, the Macocha Abyss represents a natural habitat with a distinct microclimatic gradient, and is an excellent refuge area for psychrophilous as well as thermophilous species, which significantly contributes to maintenance of landscape biodiversity.



© Ota Zimmermann

While the majority of the Central European landscape would be covered by forests without human influence, rocky areas form isolated, islet-like, natural, non-forest habitats. The surface of some of these non-forested areas is composed of bare bedrock or products of its erosional breakdown (without a soil layer) such as gravel, sand banks, sand dunes, scree slopes and rock outcrop habitats. These habitats harbour specialized  spider species that depend on their specific substratum and microclimate (Růžička 2000). Out of these habitats, rock walls (and scree slopes) form one of the most distinct ecological gradients of any terrestrial ecosystem (Larson et al. 1989, Růžička et al. 1995). They provide habitats with extremely warm and cold microclimatic conditions in close proximity. They also belong to habitats almost unknown until now due to the technical and practical problems of sampling.

Sandstones can form extensive systems of rocks, sometimes with a broad spectrum of meso- and microhabitats due to their very dynamic relief. Sandstone rocks are characterised by a marked contrast between forested plateau and bare vertical rock walls (Balatka and Sládek 1984). Upper margins of rocks are dry, vertical rock walls can be sun-exposed, dry and bare, or shady and humid and hence covered by mosses. Spaces with an extremely cold climate can occur in deep gorges. The aim of this study is to evaluate available data on the species composition of spider assemblages in sandstone rocks, including new data about spiders on rock walls in the Bohemian Switzerland (České Švýcarsko) National Park.



Statistics

By month


By altitude


By collecting method (190 used records)
Zodarion germanicum (C. L. Koch, 1837) ESMalesFemalesJuvenilesRecords
Zemní past500178637165
Prosev3155
Individuální sběr810420
 MalesFemalesJuvenilesRecords

By biotope (135 used records)
Zodarion germanicum (C. L. Koch, 1837) ESMalesFemalesJuvenilesRecords
suché doubravy3101
dubohabřiny267417
Lesní okraje757114
osluněné skály nižších poloh6438
okraje silnic411453
bučiny nižších poloh1001
reliktní bory na skalách5203
kamenité suti nižších poloh96212
skalní stepi na vápenci18122018
Xerotermní travinobylinná společenstva3434
lesostepní doubravy67151223
horská vřesoviště0001
haldy a výsypky005894
Acidofilní bory1001
00000000101
paseky3002
ruderály2001
suché křoviny3002
Přirozené lesy1001
výsadby jehličnanů3405
travnaté stepi6106
rašelinné bory4104
Kultury listnáčů551102
Stojaté a pomalu tekoucí vody4101
 MalesFemalesJuvenilesRecords

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