J 2021

Spring water table depth mediates within-site variation of soil temperature in groundwater-fed mires

HORSÁK, Michal; Veronika HORSÁKOVÁ; Marek POLÁŠEK; Radovan COUFAL; Petra HÁJKOVÁ et. al.

Základní údaje

Originální název

Spring water table depth mediates within-site variation of soil temperature in groundwater-fed mires

Autoři

HORSÁK, Michal (203 Česká republika, garant, domácí); Veronika HORSÁKOVÁ (203 Česká republika, domácí); Marek POLÁŠEK (203 Česká republika, domácí); Radovan COUFAL (203 Česká republika, domácí); Petra HÁJKOVÁ (203 Česká republika, domácí) a Michal HÁJEK (203 Česká republika, domácí)

Vydání

Hydrological Processes, Hoboken, John Wiley & Sons, 2021, 0885-6087

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10503 Water resources

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 3.784

Kód RIV

RIV/00216224:14310/21:00119259

Organizační jednotka

Přírodovědecká fakulta

UT WoS

000678409000003

EID Scopus

2-s2.0-85111377684

Klíčová slova anglicky

climate change; soil thermal buffering; spring mire; temperature datalogger; water saturation; within-site variation

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 10. 3. 2022 16:01, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

Groundwater-dependent ecosystems represent globally rare edaphic islands of scattered distribution, often forming areas of regionally unique environmental conditions. A stable groundwater supply is a key parameter defining their ecological specificity, promoting also soil thermal buffering. Still, a limited number of studies dealt with the importance of water temperature in mire ecosystems and virtually no data exist on within-site variation in the temperature buffer effect. Three temperature dataloggers, placed in patches potentially differing in groundwater supply, were installed in each of 19 Western Carpathian spring mire sites from May 2019 to July 2020. Spring source plots statistically differed in water temperature parameters from the plots located towards the spring mire margin, which did not significantly differ from one another. At the majority of sites, the temperature values changed gradually from spring source to mire margins, fitting the pattern expected in the groundwater temperature buffering scenario. Dataloggers placed in the spring sources were the most distinctive from the others in thermal buffering parameters in conditional principal component analysis. The difference between the spring source and its margin was on average 3.25 degrees C for 95th percentile of the recorded water temperature data points (i.e. warm extremes) and 1.91 degrees C for 5th percentile (i.e. cold extremes). This suggests that if the temperature at spring source area is considered, thermal buffering within a site may mitigate mainly warm extremes. Thus, our data may provide an important baseline for predictions of possibly upcoming changes in spring mire hydrology caused by climate change. Both warming and precipitation decrease can give rise to the loss or substantial reduction of buffering effect if the contrasting parameters now recorded at the central part shift to those found towards the margins of groundwater-fed areas.

Návaznosti

GA19-01775S, projekt VaV
Název: Současná a budoucí diverzita evropských slatinišť v měnícím se světě
Investor: Grantová agentura ČR, Současná a budoucí diverzita evropských slatinišť v měnícím se světě