Article (Scientific journals)
Effects of agricultural land use on fluvial carbon dioxide, methane and nitrous oxide concentrations in a large European river, the Meuse (Belgium)
Borges, Alberto; Darchambeau, François; Lambert, Thibault et al.
2018In Science of the Total Environment, 610–611 (-), p. 342-355
Peer Reviewed verified by ORBi
 

Files


Full Text
1-s2.0-S0048969717320454-main.pdf
Publisher postprint (4.1 MB)
Download

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Meuse river
Abstract :
[en] We report a data-set of CO2, CH4, and N2O concentrations in the surface waters of the Meuse river network in Belgium, obtained during four surveys covering 50 stations (summer 2013 and late winter 2013, 2014 and 2015), from yearly cycles in four rivers of variable size and catchment land cover, and from 111 groundwater samples. Surface waters of the Meuse river network were over-saturated in CO2, CH4, N2O with respect to atmospheric equilibrium, acting as sources of these greenhouse gases to the atmosphere, although the dissolved gases also showed marked seasonal and spatial variations. Seasonal variations were related to changes in freshwater discharge following the hydrological cycle, with highest concentrations of CO2, CH4, N2O during low water owing to a longer water residence time and lower currents (i.e. lower gas transfer velocities), both contributing to the accumulation of gases in the water column, combined with higher temperatures favourable to microbial processes. Inter-annual differences of discharge also led to differences in CH4 and N2O that were higher in years with prolonged low water periods. Spatial variations were mostly due to differences in land cover over the catchments, with systems dominated by agriculture (croplands and pastures) having higher CO2, CH4, N2O levels than forested systems. This seemed to be related to higher levels of dissolved and particulate organic matter, as well as dissolved inorganic nitrogen in agriculture dominated systems compared to forested ones. Groundwater had very low CH4 concentrations in the shallow and unconfined aquifers (mostly fractured limestones) of the Meuse basin, hence, should not contribute significantly to the high CH4 levels in surface riverine waters. Owing to high dissolved concentrations, groundwater could potentially transfer important quantities of CO2 and N2O to surface waters of the Meuse basin, although this hypothesis remains to be tested.
Research center :
FOCUS - Freshwater and OCeanic science Unit of reSearch - ULiège
UEE - Urban and Environmental Engineering - ULiège
Disciplines :
Aquatic sciences & oceanology
Author, co-author :
Borges, Alberto  ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Chemical Oceanography Unit (AGO)
Darchambeau, François ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Chemical Oceanography Unit (AGO)
Lambert, Thibault ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Chemical Oceanography Unit (AGO)
Bouillon, S.
Morana, Cédric ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Chemical Oceanography Unit (COU)
Brouyère, Serge  ;  Université de Liège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Hakoun, Vivien 
Jurado Elices, Anna ;  Université de Liège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Tseng, H.-C.
Descy, Jean-Pierre 
Roland, Fleur ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Chemical Oceanography Unit (AGO)
Language :
English
Title :
Effects of agricultural land use on fluvial carbon dioxide, methane and nitrous oxide concentrations in a large European river, the Meuse (Belgium)
Publication date :
2018
Journal title :
Science of the Total Environment
ISSN :
0048-9697
eISSN :
1879-1026
Publisher :
Elsevier Science, Amsterdam, Netherlands
Volume :
610–611
Issue :
-
Pages :
342-355
Peer reviewed :
Peer Reviewed verified by ORBi
European Projects :
FP7 - 600405 - BEIPD - Be International Post-Doc - Euregion and Greater Region
Funders :
CE - Commission Européenne [BE]
Available on ORBi :
since 12 August 2017

Statistics


Number of views
305 (34 by ULiège)
Number of downloads
793 (14 by ULiège)

Scopus citations®
 
141
Scopus citations®
without self-citations
130
OpenCitations
 
106

Bibliography


Similar publications



Contact ORBi