Headwaters biogeochemistry focused on different rainfall-runoff conditions, and the role of waterlogged areas: a comparative study of Czech mountains

Fraindová, Kateřina; Matoušková, Milada; Kliment, Zdeněk; Vlček, Lukáš; Vlach, Vojtěch; Springerova, Pavla

doi:10.1080/02626667.2022.2038792

Cited by 3 publications

(2 citation statements)

References 105 publications

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“…Catchments with > 20% wetlands have higher mean DOC concentrations (> 20 mg⋅l −1 ) corresponding to e.g. Ducharme et al (2021) or Fraindová et al (2022). Higher DOC concentrations were observed in these catchments even during periods of low flows compared to other catchments.…”

Section: Discussionmentioning

confidence: 88%

Dynamics of dissolved organic carbon in surface water during extreme rainfall-runoff events

Matoušková,

Fraindová,

Bejčková

et al. 2023

První Konference PERUN

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The release of a greater amount of natural organic matter (NOM) within climate change is registered in many catchments with peatbog areas. The aim of our research is to study the dynamics of releasing dissolved organic carbon (DOC) into surface water in headwater areas with peatbogs. DOC concentrations are analysed in relation to extreme rainfall-runoff (R-R) events and according to the hydrological preconditions of the basin. These preconditions are described using selected hydroclimatic variables (14 days before the R-R event). The source data comes from stations of the Faculty of Science, Charles University, and the Czech Hydrometeorological Institute. For the evaluation of relations and processes, the Principal component analysis (PCA), hysteresis loops or Pearson correlation coefficient was used. The lag time of DOCmax for Qmax, the dependence of DOCmax and groundwater levels were studied. The influence of flow rate on the decline and ascent phases of DOC concentrations by hysteresis loops and the influence of the number of partial flow maximums on the amount of transported DOC during the R-R event was analysed. Our first results show that great influence on the dynamic of DOC concentration in surface water has the change in groundwater-levels in the peatbog and the outflow amount during the R-R event. The hydroclimatic preconditions of the basin have also a significant influence on the DOC release. Changes in concentrations during R-R events also occurred for other compounds that were studied additionally. Particularly significant was the increase in metals (mainly Fe, Al, Mn) and base cation (K) and decrease in nitrate nitrogen.

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Section: Discussionmentioning

confidence: 88%

Dynamics of dissolved organic carbon in surface water during extreme rainfall-runoff events

Matoušková,

Fraindová,

Bejčková

et al. 2023

První Konference PERUN

View full text Add to dashboard Cite

show abstract

“…Catchments with > 20% wetlands have higher mean DOC concentrations (> 20 mg⋅l −1 ) corresponding to e.g. Ducharme et al (2021) or Fraindová et al (2022. Higher DOC concentrations were observed in these catchments even during periods of low flows compared to other catchments.…”

Section: Discussionmentioning

confidence: 88%

První konference PERUN

2023

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Response of dissolved organic carbon in streams draining peatbogs to extreme rainfall-runoff events: a case study from Šumava (Bohemian Forest) National Park, Czech Republic

Matouskova,

Fraindova,

Bejckova

et al. 2024

Environ Earth Sci

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The presented study investigates the dynamics of DOC concentrations in headwater peatbog areas with respect to the extreme rainfall-runoff (R-R) events hydrometeorological catchment preconditions (23 variables in total). The main data sources were automatic devices for monitoring of groundwater level, discharges and rainfalls providing data in 10 min steps installed in the Vydra River catchment and one automatic water sampler ISCO in sub-catchment of the Rokytka River basin in the Šumava (Bohemian Forest) National Park. The study period was 2018–2021, in which 18 R-R events were analysed. Data of DOC variability and catchment conditions were analysed using Spearman’s correlation coefficient, Principal Component Analysis and DOC/Q hysteresis loops. Changes in groundwater level and discharges had the greatest influence on DOC concentrations. Higher mean and maximum DOC were measured during events after a longer period without an extreme R-R event. The greater lag time of maximum DOC after peak flow and the higher mean DOC during the event were primarily due to hydrometeorological preconditions of the catchment. The highest DOC was in autumn after the previous summer period with low discharges and low groundwater levels. DOC was also positively correlated with air and water temperatures.

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Headwaters biogeochemistry focused on different rainfall-runoff conditions, and the role of waterlogged areas: a comparative study of Czech mountains

Cited by 3 publications

References 105 publications

Dynamics of dissolved organic carbon in surface water during extreme rainfall-runoff events

Dynamics of dissolved organic carbon in surface water during extreme rainfall-runoff events

První konference PERUN

Response of dissolved organic carbon in streams draining peatbogs to extreme rainfall-runoff events: a case study from Šumava (Bohemian Forest) National Park, Czech Republic

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