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Spring Water pH in Forest Catchments Is Modified through Fluctuating Discharge under Climate Change

Beierkuhnlein, Carl und Djordjevic, Bojan und Höger, Johannes und Wilkens, Vincent und Shrestha, Samip Narayan und Smith, Timothy und Weiser, Frank (2024) Spring Water pH in Forest Catchments Is Modified through Fluctuating Discharge under Climate Change. Hydrobiology, 3, Seiten 325-336. Multidisciplinary Digital Publishing Institute (MDPI). doi: 10.3390/hydrobiology3040020. ISSN 2673-9917.

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Kurzfassung

Over the course of industrialization in the 20th century, vast emissions of air pollutants have occurred. The exhaust gasses contain sulfur and nitrogen oxides, which are converted to sulfuric acid and nitric acid in the atmosphere. This causes acid rain to enter aquatic and terrestrial ecosystems, the most serious consequence of which is large-scale forest dieback across Europe and North America. However, through various political measures, the exhaust gasses have been reduced and, thus, acid rain and forest dieback were stopped. Nevertheless, the lingering effects of this pollution are still present today and are reflected in hydrochemistry. More recently, fluctuating precipitation regimes are causing additional stress to ecosystems in Central Europe. Climatic extremes are becoming more pronounced with climate change. Substantial differences between drought years and years with regular precipitation are directly altering the discharge of springs. Now, two overlapping and interacting syndromes of environmental pressures can be studied in these small catchments at a landscape scale: (1) acidification and (2) climate change. In this long-term study, the waters of 102 forest springs, located in two neighboring forest landscapes in north-eastern Bavaria, Germany (Frankenwald and Fichtelgebirge), were investigated over 24 years (1996 to 2020). By linking changes in pH values with changes in precipitation and spring discharge, we found that pH increases with decreasing discharge and decreasing precipitation. This effect was strongest in the Frankenwald compared to the Fichtelgebirge. We hypothesize that this temporal pattern reflects the longer residence time and, in consequence, the increased buffering of acidic interflow in small catchments during periods of drought. However, this should not be misinterpreted as rapid recovery from acidification because this effect fades in times of enhanced precipitation. We recommend that fluctuations in weather regimes be considered when investigating biogeochemical patterns throughout forest landscapes.

elib-URL des Eintrags:https://elib.dlr.de/209434/
Dokumentart:Zeitschriftenbeitrag
Titel:Spring Water pH in Forest Catchments Is Modified through Fluctuating Discharge under Climate Change
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Beierkuhnlein, CarlUniversität BayreuthNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Djordjevic, BojanDepartment of Biogeography, University of Bayreuth, Universitätsstraße 30, 95447 Bayreuth, GermanyNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Höger, JohannesDepartment of Biogeography, University of Bayreuth, Universitätsstraße 30, 95447 Bayreuth, GermanyNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Wilkens, VincentDepartment of Biogeography, University of Bayreuth, Universitätsstraße 30, 95447 Bayreuth, GermanyNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Shrestha, Samip Narayansamip.shrestha (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Smith, TimothyDepartment of Biogeography, University of Bayreuth, Universitätsstraße 30, 95447 Bayreuth, GermanyNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Weiser, FrankDepartment of Biogeography, University of Bayreuth, Universitätsstraße 30, 95447 Bayreuth, GermanyNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:11 Oktober 2024
Erschienen in:Hydrobiology
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Ja
In SCOPUS:Nein
In ISI Web of Science:Nein
Band:3
DOI:10.3390/hydrobiology3040020
Seitenbereich:Seiten 325-336
Verlag:Multidisciplinary Digital Publishing Institute (MDPI)
ISSN:2673-9917
Status:veröffentlicht
Stichwörter:acid rain; drought; helocrene springs; catchment acidification; climate change; Frankenwald; Fichtelgebirge
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Luftverkehr und Auswirkungen
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AI - Luftverkehr und Auswirkungen
DLR - Teilgebiet (Projekt, Vorhaben):L - Klima, Wetter und Umwelt
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Deutsches Fernerkundungsdatenzentrum > Dynamik der Landoberfläche
Hinterlegt von: Shrestha, Samip Narayan
Hinterlegt am:29 Nov 2024 10:59
Letzte Änderung:29 Nov 2024 10:59

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