Nature Conservation Agency of the Czech Republic, Regional Office Kokořínsko – Máchův kraj Protected Landscape Area Administration, Mělník, Czech Republic
CORRESPONDING AUTHOR
Luboš Beran
Nature Conservation Agency of the Czech Republic, Regional Office Kokořínsko – Máchův kraj Protected Landscape Area Administration, Česká 149, CZ–276 01 Mělník, Czech Republic
The data on the distribution of Pisidium pseudosphaerium in the Czech Republic were summarised and analysed in an attempt to answer the question of whether the species was really very rare or only overlooked. P. pseudosphaerium was recorded at 17 sites, most of them found in the last 15–20 years, while earlier records were very rare. Very abundant populations (metapopulations) were found in eight sites, while the abundance in the other sites was much lower. P. pseudosphaerium is a vulnerable species inhabiting natural or only slightly altered sites (now often within protected areas); disappearance of such sites from most of the Czech Republic is the probable reason for its rarity.
REFERENCES(13)
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Beran L., Juřičková L., Horsák M. 2005. Mollusca (Měkkýši). In: Farkač J., Král D., Škorpík M. (eds). Červený seznam ohrožených druhů České republiky. Bezobratlí. Agentura ochrany přírody a krajiny ČR, Praha, pp. 69–74.
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Jungbluth J. H., Knorre D. 2009. Rote Liste der Binnenmollusken (Schnecken (Gastropoda) und Muscheln (Bivalvia)) in Deutschland. Mitt. dtsch. malakozool. Ges. 81: 1–28.
Malacological news from the Czech and Slovak Republics in 2015–2019 Tomáš Čejka, Luboš Beran, Ondřej Korábek, Jaroslav Hlaváč, Jitka Horáčková, Radovan Coufal, Magda Drvotová, Michal Maňas, Veronika Horsáková, Michal Horsák Malacologica Bohemoslovaca
Měkkýši Národní přírodní památky Hrabanovská černava (střední Čechy) [Molluscs of the Hrabanovská černava National Nature Monument (Central Bohemia)] Luboš Beran, Jana Škodová Malacologica Bohemoslovaca
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