Seasonal changes of organic matter quality and quantity at the outlet of a forested karst system (La Roche Saint Alban, French Alps)

Model-aided quantification of dissolved carbon and nitrogen release after windthrow disturbance in an Austrian karst system

“…Nitrate and dissolved organic carbon (DOC) have both been considered in drinking water directives and water preparation processes (Gough et al, 2014;Mikkelson et al, 2013;Tissier et al, 2013;Weishaar et al, 2003). Though nitrate pollution of drinking water is usually attributed to fertilization of crops and grassland, an excess input of atmospheric nitrogen (N) from industry, traffic and agriculture into forests has caused reasonable nitrate losses from forest areas Erisman and Vries, 2000;Gundersen et al, 2006;.…”

“…While many studies identify N and DOC as source of contamination in karst systems (Einsiedl et al, 2005;Jost et al, 2010;Katz et al, 2001Katz et al, , 2004Tissier et al, 2013) or provide static vulnerability maps (Andreo et al, 2008;Doerfliger et al, 1999), only very few studies use models to quantify the temporal behaviour of a contamination through the systems (Butscher and Huggenberger, 2008). Some studies use N and DOC to better understand karst processes (Charlier et al, 2012;Mahler and Garner, 2009;Pinault et al, 2001) or for advanced karst model calibration (Hartmann et al, 2013b(Hartmann et al, , 2014b, but to our knowledge there are no applications of such approaches to quantify the drainage processes of N and DOC, and particularly so after strong impacts on ecosystems (e.g.…”

Geochemical mapping of organic carbon in stalagmites using liquid-phase and solid-phase fluorescence

“…In fact, carbon measurement procedures described in the literature are either quantitative but low-resolution destructive methods Hartland et al, 2014;Li et al, 2014;Ramseyer et al, 1997;Smailer & White 2013;Van Beynen et al, 2001) or semi-quantitative but high-resolution spectroscopic methods (Baker et al, 1996;Baker et al, 1997). Spectroscopic techniques have also been used to determine the organic carbon concentrations of karst waters (Charlier et al, 2010;Tissier et al, 2013). In the present research, we applied this approach to speleothems via a new procedure in which spectroscopic analyses are combined with a carbon extraction method that consumes only small amounts of material.…”

“…Fluorescence spectra are simulated by the linear combination of: -2 to 3 lognormal functions, needed to simulate Raman and Rayleigh emissions (first and second order, when present), -3 to 4 lognormal functions, used to simulate OM fluorescence (Tissier et al, 2013).…”

Comparative Study of the Physicochemical Response of Two Karst Systems During Contrasting Flood Events in the French Jura Mountains

“…High-frequency monitoring of physicochemical parameters contributes to a better understanding of the hydrogeological functioning of karst systems (e.g., Pronk et al 2006;Fournier et al 2007;Mudarra et al 2013;Tissier et al 2013). In this study, two karst systems were monitored belonging to the ''Jurassic Karst'' (JK) hydrogeological observatory in the French Jura Mountains (https://zaaj.univfcomte.fr/spip.php?article13&lang=en).…”