Occurrence and Population Density of the Endemic Species Cordulegaster buchholzi (Anisoptera: Cordulegastridae) on the Cyclades Islands in Greece
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43310%2F23%3A43924256" target="_blank" >RIV/62156489:43310/23:43924256 - isvavai.cz</a>
Alternative codes found
RIV/62156489:43410/23:43924256
Result on the web
<a href="https://doi.org/10.3390/insects14110896" target="_blank" >https://doi.org/10.3390/insects14110896</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/insects14110896" target="_blank" >10.3390/insects14110896</a>
Alternative languages
Result language
angličtina
Original language name
Occurrence and Population Density of the Endemic Species Cordulegaster buchholzi (Anisoptera: Cordulegastridae) on the Cyclades Islands in Greece
Original language description
Our research was focused on determining the geomorphological characteristics of streams, characteristics of sediment in streams, habitat, emergence sites and flight period. Larvae were recorded in 19 streams (altitude of 35-680 m a.s.l.), with an average minimum width of 44.2 cm, an average maximum width of 352.9 cm, an average minimum depth of 9 cm and an average maximum depth (in pools) of 55 cm, with an average stream gradient of 12 grades (range 0.6-45 grades). In terms of grain size, the sediment in these biotopes can be characterized as sandy gravel, medium-grained gravel with an admixture of fine sand and an admixture of coarse-grained gravel prevails (with dominancy of fraction 2-5 mm with a representation of 47%). The larval density reached 0.1-62.2 larvae per 1 m2 of suitable sediment. Exuviae (100 exuviae found in total) occurred at an average of 66 cm horizontal distance from the shore and an average vertical height of 124 cm above the ground. The average total distance of larval movement was 190 cm. The emergence site was categorized as larvae-dominated tree trunks (57% of cases), rocks (51%) and overhanging rocks (11%). The flight period was recorded from 17th May to 15th July (literary record-to 15th August) with peak flight activity noted in the third quarter of June. Considering the size of the area-extent of occurrence, the population of C. buchholzi is strongly threatened; according to the IUCN categories it should be classified as endangered (EN).
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
10619 - Biodiversity conservation
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Insects
ISSN
2075-4450
e-ISSN
2075-4450
Volume of the periodical
14
Issue of the periodical within the volume
11
Country of publishing house
CH - SWITZERLAND
Number of pages
16
Pages from-to
896
UT code for WoS article
001114591600001
EID of the result in the Scopus database
2-s2.0-85178091544