Population Density and Abundance of the Northernmost Population of Cordulegaster heros (Anisoptera: Cordulegastridae) in Europe (Czech Republic) with Notes on Its Biogeographical Range
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43310%2F22%3A43922097" target="_blank" >RIV/62156489:43310/22:43922097 - isvavai.cz</a>
Alternative codes found
RIV/62156489:43410/22:43922097
Result on the web
<a href="https://doi.org/10.3390/d14100854" target="_blank" >https://doi.org/10.3390/d14100854</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/d14100854" target="_blank" >10.3390/d14100854</a>
Alternative languages
Result language
angličtina
Original language name
Population Density and Abundance of the Northernmost Population of Cordulegaster heros (Anisoptera: Cordulegastridae) in Europe (Czech Republic) with Notes on Its Biogeographical Range
Original language description
Cordulegaster heros is a Balkan species with a disjunctive area extending into Central Europe. The population in the Chřiby Mts. in the southeastern Czech Republic is the northernmost population, and this population was intensively studied from 2010 to 2021 to establish basic data on its abundance. In the territory, the geomorphological characteristics of streams, characteristics of sediment in streams, habitat, emergence time, and period of flight were recorded, and population viability was evaluated. Larvae were recorded in 10 small forest streams (altitude of 235-426 m a.s.l.), with an average minimum width of 51.9 cm, an average maximum width of 177.7 cm, an average minimum depth of 6.5 cm, an average maximum depth (in pools) of 21 cm, and an average stream gradient of 1.9 grades. The sediments in each stream exhibited a grain size distribution with an average fraction less than 0.05 mm represented by 6.3%, a fraction of 0.05-0.1 mm represented by 21.1%, a fraction of 0.1-2 mm represented by 52.1%, a fraction of 2-5 mm represented by 12.1%, a fraction of 5-20 mm represented by 8%, and a fraction of 20+ mm represented by 0.3%. The larval abundance was 0.1-6.7 larvae per 1 m2 of suitable sediment. The emergence period was recorded from 28 May to 1 July. The emergence site was categorized as larvae-dominated plant leave (57% of cases), plant stalks (21%), and tree trunks (17%). Exuviae occurred at an average of 154 cm at horizontal distance from the shore and an average vertical height of 77 cm above the ground. The average total distance of larval movement was 205 cm. The flight period in 2021 was recorded from 15 June to 11 August with peak flight activity noted in the third week of June. The northernmost population of C. heros was evaluated as viable and stable.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10616 - Entomology
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Diversity
ISSN
1424-2818
e-ISSN
1424-2818
Volume of the periodical
14
Issue of the periodical within the volume
10
Country of publishing house
CH - SWITZERLAND
Number of pages
16
Pages from-to
854
UT code for WoS article
000872425100001
EID of the result in the Scopus database
2-s2.0-85140773052