scholarly journals Recent distribution, population densities and ecological requirements of the stone crayfish (Austropotamobius torrentium) in the Czech Republic

2009 ◽  
pp. 13 ◽  
Author(s):  
P. Vlach ◽  
L. Hulec ◽  
D. Fischer
Keyword(s):  
Czech Republic ◽  
Population Densities ◽  
The Czech Republic ◽  
Ecological Requirements ◽  
Austropotamobius Torrentium ◽  
Stone Crayfish

Frequency of new marble-colored morph in wild population of Austropotamobius torrentium (Decapoda: Astacidae)

Biologia ◽  
2013 ◽  
Vol 68 (4) ◽  
Author(s):  
Jiří Patoka ◽  
Kateřina Římalová-Kadlecová ◽  
Michal Bílý ◽  
Ján Koščo
Keyword(s):  
Czech Republic ◽  
Central Europe ◽  
Wild Population ◽  
Frequency Of Occurrence ◽  
The Czech Republic ◽  
Color Morphs ◽  
Crayfish Population ◽  
Austropotamobius Torrentium ◽  
Stone Crayfish ◽  
Crayfish Species

AbstractIn contrast with the usual coloration of stone crayfish (Austropotamobius torrentium), we newly discovered a rare marble morph in a brook in the Czech Republic (Central Europe). During mark-recapture sessions, we captured by hand 1,103 individuals over the 3 years 2008–2010 from which only 5 were marble-colored. This color morph’s frequency of occurrence was thus less than 1% within the estimated subadult and adult stone crayfish population. Although many biological papers and determination keys regarding crayfish are based upon analysis of exoskeletal coloration, recent studies have asserted that this characteristic provides unreliable guidance when determining species inasmuch as it easily results in errors because many crayfish species exhibit an extensive variety of color morphs.

scholarly journals THE STONE CRAYFISH AUSTROPOTAMOBIUS TORRENTIUM (SCHRANK) IN THE CZECH REPUBLIC

2002 ◽  
pp. 707-713
Author(s):  
P. KOZAK ◽  
Z. DURIS ◽  
T. POLICAR
Keyword(s):  
Czech Republic ◽  
Native Species ◽  
Military Training ◽  
Astacus Leptodactylus ◽  
Terrestrial Environment ◽  
The Czech Republic ◽  
Orconectes Limosus ◽  
Terrestrial Environments ◽  
Austropotamobius Torrentium ◽  
Stone Crayfish

Five species of crayfish, comprising two native species Austropotamobius torrentium and Astacus astacus, one introduced European species, Astacus leptodactylus and two alien American species, Orconectes limosus and Pacifastacus leniusculus, occur in open waters of the Czech Republic. The stone crayfish is highly endangered species in the country, known only from several recent records. Four localities have been confirmed for the presence of the stone crayfish in the Czech Republic. Basic characteristics of the following stone crayfish occurring localities are described: Míza and Upořský brook in Křivoklát protected area, Zubřina brook near Domažlice, Luční brook near Trutnov and Klabava brook in Brdy Military Training Area. The present localities have been investigated for chemical, structural and terrestrial environments. Properties of these waters (morphology, supply of substrate, current, aquatic and terrestrial environment) are compared with literature data. Strong conservation actions are necessary to save the endangered stone crayfish on most north-eastern limit of its distribution.

scholarly journals Predicted climate change will increase the truffle cultivation potential in central Europe

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Tomáš Čejka ◽  
Miroslav Trnka ◽  
Paul J. Krusic ◽  
Ulrich Stobbe ◽  
Daniel Oliach ◽  
...  
Keyword(s):  
Climate Change ◽  
Czech Republic ◽  
Central Europe ◽  
Agricultural Land ◽  
Economic Benefits ◽  
The Czech Republic ◽  
Truffle Cultivation ◽  
Ecological Requirements ◽  
Wide Range ◽  
Future Warming

AbstractClimate change affects the distribution of many species, including Burgundy and Périgord truffles in central and southern Europe, respectively. The cultivation potential of these high-prized cash crops under future warming, however, remains highly uncertain. Here we perform a literature review to define the ecological requirements for the growth of both truffle species. This information is used to develop niche models, and to estimate their cultivation potential in the Czech Republic under current (2020) and future (2050) climate conditions. The Burgundy truffle is already highly suitable for cultivation on ~ 14% of agricultural land in the Czech Republic (8486 km2), whereas only ~ 8% of the warmest part of southern Moravia are currently characterised by a low suitability for Périgord truffles (6418 km2). Though rising temperatures under RCP8.5 will reduce the highly suitable cultivation areas by 7%, the 250 km2 (3%) expansion under low-emission scenarios will stimulate Burgundy truffles to benefit from future warming. Doubling the moderate and expanding the highly suitable land by 352 km2 in 2050, the overall cultivation potential for Périgord truffles will rise substantially. Our findings suggest that Burgundy and Périgord truffles could become important high-value crops for many regions in central Europe with alkaline soils. Although associated with uncertainty, long-term investments in truffle cultivation could generate a wide range of ecological and economic benefits.

The rare species Synura lapponica (Synurophyceae) new to the Czech Republic, local vs. global diversity in colonial synurophytes

Biologia ◽  
2009 ◽  
Vol 64 (6) ◽  
Author(s):  
Yvonne Němcová ◽  
Martina Pichrtová
Keyword(s):  
Czech Republic ◽  
Rare Species ◽  
Environmental Variables ◽  
Considerable Increase ◽  
Sampling Effort ◽  
Seasonal Fluctuations ◽  
The Czech Republic ◽  
Ecological Requirements ◽  
Bipolar Distribution ◽  
First Time

AbstractSynura lapponica Skuja, a freshwater colonial flagellate (Synurophyceae, Stramenopila), has been reported for the first time in the Czech Republic. This study evaluates the ecological requirements of the species, and includes a survey of the literature. Although S. lapponica has been reported thus far only in the Northern Hemisphere, the probability of its bipolar distribution is relatively high (22%). Distribution is probably ecologically determined, water temperature (correlated with latitude or seasonal fluctuations), and lower pH seem to be the primary environmental variables. A local vs. global ratio reflects, to a certain extent, the degree of sampling effort expended in the studied area, but a considerable increase in the number of revealed taxa was apparent when the area was expanded.

scholarly journals Monitoring the population dynamics of the horse chestnut leafminer Cameraria ohridella with a synthetic pheromone in Europe

2012 ◽  
Vol 38 (No. 4) ◽  
pp. 131-138 ◽  
Author(s):  
J. Kindl ◽  
B. Kalinová ◽  
J. Freise ◽  
W. Heitland ◽  
S. Augustin ◽  
...  
Keyword(s):  
Population Dynamics ◽  
Czech Republic ◽  
Sex Pheromone ◽  
Central Europe ◽  
Horse Chestnut ◽  
Population Densities ◽  
The Czech Republic ◽  
Synthetic Pheromone ◽  
Synthetic Sex Pheromone ◽  
Insect Phenology

A monitoring system for Cameraria ohridella males based on a synthetic sex pheromone was tested in the Czech Republic, Germany, France and Greece. From the obtained data on the insect phenology we concluded that in Central Europe C. ohridella typically has three generations per year. The pheromone monitoring can be used to detect the pest when it appears in uninfested areas and is also suitable to determine population densities.

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