2019
Influence of environmental stability on microcrustacean assemblages in Western Carpathian spring-fens
VÝRAVSKÝ, David, Marie ZHAI, Dana KLÍMOVÁ HŘÍVOVÁ, Jindřiška BOJKOVÁ, Michal HORSÁK et. al.Základní údaje
Originální název
Influence of environmental stability on microcrustacean assemblages in Western Carpathian spring-fens
Autoři
VÝRAVSKÝ, David, Marie ZHAI, Dana KLÍMOVÁ HŘÍVOVÁ, Jindřiška BOJKOVÁ, Michal HORSÁK, Vendula POLÁŠKOVÁ a Marek POLÁŠEK
Vydání
6th Fresh Blood for Fresh Water Conference, 2019
Další údaje
Typ výsledku
Konferenční abstrakt
Utajení
není předmětem státního či obchodního tajemství
Příznaky
Mezinárodní význam
Změněno: 6. 9. 2019 17:47, Mgr. David Výravský
Anotace
V originále
In this study we have evaluated the environmental stability, characterized as water and temperature regime, in 34 spring fens in the Western Carpathians, and its influence on microcrustacean assemblages (Ostracods, Harpacticoids). Altogether 20 ostracod and 19 harpacticoid taxa were found at the 34 spring fens during one shot sampling in June 2008, 2011 and 2012. The median number of species per site was 7 and the median total abundance was 236 individuals. Water temperature was recorded every 30 min for 24 months and water levels were measured manually six times (April 2016 to April 2018). The spring fens differed in thermal stability: stable sites were situated only in colder climatic areas, while fluctuating sites were scattered along the whole climatic gradient. Temperature and water regime (i.e., mean July water temperature, surface water depth) were the most significant variables influencing microcrustacean assemblages. Their effects were only partly shared with other environmental variables (Ca+Mg content, nutrients and mean January air temperature). Two groups of species according to their specialization were identified: a) species with a relatively high affinity to spring habitat, which prevailed at the stable sites, and b) ubiquitous species, which were constricted almost only to the fluctuating sites, i.e. sites that warmed up in summer. We suggest that the “ubiquitous” species are weaker competitors in the stable environment.