KIT | KIT-Bibliothek | Impressum | Datenschutz

Hydrology and riparian forests drive carbon and nitrogen supply and DOC : NO$_{3}$ $^{–}$ stoichiometry along a headwater Mediterranean stream

Ledesma, José L. J. ORCID iD icon 1; Lupon, Anna; Martí, Eugènia; Bernal, Susana
1 Institut für Geographie und Geoökologie (IFGG), Karlsruher Institut für Technologie (KIT)


In forest headwater streams, metabolic processes are predominately heterotrophic and depend on both the availability of carbon (C) and nitrogen (N) and a favourable C:N stoichiometry. In this context, hydrological conditions and the presence of riparian forests adjacent to streams can play an important, yet understudied role in determining dissolved organic carbon (DOC) and nitrate (NO$_{3}$ $^{–}$) concentrations and DOC : NO$_{3}$ $^{–}$ molar ratios. Here, we aimed to investigate how the interplay between hydrological conditions and riparian forest coverage drives DOC and NO$_{3}$ $^{–}$ supply and DOC : NO$_{3}$ $^{–}$ stoichiometry in an oligotrophic headwater Mediterranean stream. We analysed DOC and NO$_{3}$ $^{–}$ concentrations and DOC : NO$_{3}$ $^{–}$ molar ratios during both base flow and storm flow conditions at three stream locations along a longitudinal gradient of increased riparian forest coverage. Further, we performed an event analysis to examine the hydroclimatic conditions that favour the transfer of DOC and NO$_{3}$ $^{–}$ from riparian soils to the stream during storms. Stream DOC and NO$_{3}$ $^{–}$ concentrations were generally low (overall averages ± SD were 1.0 ± 0.6 mg C L $^{–1}$ and 0.20 ±
... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000150268
Veröffentlicht am 31.08.2022
DOI: 10.5194/hess-26-4209-2022
Zitationen: 3
Web of Science
Zitationen: 3
Zitationen: 3
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Geographie und Geoökologie (IFGG)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2022
Sprache Englisch
Identifikator ISSN: 1607-7938
KITopen-ID: 1000150268
Erschienen in Hydrology and Earth System Sciences
Verlag Copernicus Publications
Band 26
Heft 15
Seiten 4209–4232
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Vorab online veröffentlicht am 12.08.2022
Nachgewiesen in Scopus
Web of Science
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
KITopen Landing Page