Environmental stability of Western Carpathian spring-fens and
its influence on Ostracod assemblages

a 2019

Environmental stability of Western Carpathian spring-fens and its influence on Ostracod assemblages

VÝRAVSKÝ, David; Marie ZHAI; Jindřiška BOJKOVÁ; Vendula POLÁŠKOVÁ; Marek POLÁŠEK et al.

Základní údaje

Originální název

Environmental stability of Western Carpathian spring-fens and its influence on Ostracod assemblages

Autoři

VÝRAVSKÝ, David; Marie ZHAI; Jindřiška BOJKOVÁ; Vendula POLÁŠKOVÁ; Marek POLÁŠEK; Dana KLÍMOVÁ HŘÍVOVÁ a Michal HORSÁK

Vydání

9th European Ostracodologists' Meeting, 2019

Další údaje

Typ výsledku

Konferenční abstrakt

Utajení

není předmětem státního či obchodního tajemství

Příznaky

Mezinárodní význam

Změněno: 6. 9. 2019 17:30, Mgr. David Výravský, Ph.D.

Anotace

V originále

Western Carpathian spring fens are unique biotopes hosting a high diversity of various groups of organisms. These groundwater dependent systems are considered as relatively stable environment, however, possible temporal fluctuations in environmental conditions have not been sufficiently studied. In this study we have evaluated the environmental stability, i.e. water and temperature regime, at 34 spring fens and its influence on ostracod assemblages, while controlling for effects of other significant environmental variables and spatial structure. Altogether 20 ostracod taxa were found during one shot sampling in June 2008, 2011 and 2012. 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 showed two gradients of environmental stability: in water temperature (i.e., mean July water temperature) and groundwater level fluctuation, which were not correlated. Water temperature amplitude ranged from 4.3 to 17.3 °C and groundwater level fluctuation ranged from 0 to 9.5 cm. Groundwater level fluctuation was the most significant variable driving the spring fen ostracod assemblages. Its effect was only partly shared with Ca+Mg content and spatial structure, which were also significant. However, ostracods showed no response to the gradient in water temperature, in contrast to another microcrustacean group, harpacticoids, co-occurring at the same sites, which were strongly dependent on the thermal regime. We suggest that ostracod species with affinity to spring environment are not necessarily cold stenothermal and to a certain degree they can tolerate fluctuations in water temperature.

Citovat

VÝRAVSKÝ, David; Marie ZHAI; Jindřiška BOJKOVÁ; Vendula POLÁŠKOVÁ; Marek POLÁŠEK; Dana KLÍMOVÁ HŘÍVOVÁ a Michal HORSÁK. Environmental stability of Western Carpathian spring-fens and its influence on Ostracod assemblages. In 9th European Ostracodologists' Meeting. 2019.

@proceedings{1553936,
   author = {Výravský, David and Zhai, Marie and Bojková, Jindřiška and Polášková, Vendula and Polášek, Marek and Klímová Hřívová, Dana and Horsák, Michal},
   booktitle = {9th European Ostracodologists' Meeting},
   title = {Environmental stability of Western Carpathian spring-fens and its influence on Ostracod assemblages},
   year = {2019}
}

TY  - CONF
ID  - 1553936
AU  - Výravský, David - Zhai, Marie - Bojková, Jindřiška - Polášková, Vendula - Polášek, Marek - Klímová Hřívová, Dana - Horsák, Michal
PY  - 2019
TI  - Environmental stability of Western Carpathian spring-fens and its influence on Ostracod assemblages
N2  - Western Carpathian spring fens are unique biotopes hosting a high diversity of various groups of organisms. These groundwater dependent systems are considered as relatively stable environment, however, possible temporal fluctuations in environmental conditions have not been sufficiently studied. In this study we have evaluated the environmental stability, i.e. water and temperature regime, at 34 spring fens and its influence on ostracod assemblages, while controlling for effects of other significant environmental variables and spatial structure. Altogether 20 ostracod taxa were found during one shot sampling in June 2008, 2011 and 2012. 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 showed two gradients of environmental stability: in water temperature (i.e., mean July water temperature) and groundwater level fluctuation, which were not correlated. Water temperature amplitude ranged from 4.3 to 17.3 °C and groundwater level fluctuation ranged from 0 to 9.5 cm. Groundwater level fluctuation was the most significant variable driving the spring fen ostracod assemblages. Its effect was only partly shared with Ca+Mg content and spatial structure, which were also significant. However, ostracods showed no response to the gradient in water temperature, in contrast to another microcrustacean group, harpacticoids, co-occurring at the same sites, which were strongly dependent on the thermal regime. We suggest that ostracod species with affinity to spring environment are not necessarily cold stenothermal and to a certain degree they can tolerate fluctuations in water temperature.
ER  -

Přehled o publikaci