Spatial controls on dissolved organic carbon in upland waters inferred from a simple statistical model

Verfasser / Beitragende:
[Donald Monteith, Peter Henrys, Chris Evans, Iain Malcolm, Ewan Shilland, M. Pereira]
Ort, Verlag, Jahr:
2015
Enthalten in:
Biogeochemistry, 123/3(2015-04-01), 363-377
Format:
Artikel (online)
ID: 605517002
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024 7 0 |a 10.1007/s10533-015-0071-x  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s10533-015-0071-x 
245 0 0 |a Spatial controls on dissolved organic carbon in upland waters inferred from a simple statistical model  |h [Elektronische Daten]  |c [Donald Monteith, Peter Henrys, Chris Evans, Iain Malcolm, Ewan Shilland, M. Pereira] 
520 3 |a Dissolved organic carbon (DOC) concentrations in upland surface waters in many northern hemisphere industrialised regions are at their highest in living memory, provoking debate over their "naturalness”. Because of the implications for drinking water treatment and supply there is increasing interest in the potential for mitigation through local land management, and for forecasting the likely impact of environmental change. However, the dominant controls on DOC production remain unresolved, hindering the establishment of appropriate reference levels for specific locations. Here we demonstrate that spatial variation in long-term average DOC levels draining upland UK catchments is highly predictable using a simple multiple logistic regression model comprising variables representing wetland soil cover, rainfall, altitude, catchment sensitivity to acidification and current acid deposition. A negative relationship was observed between DOC concentration and altitudethat, for catchments dominated by organo-mineral soils, is plausibly explained by the combined effects of changing net primary production and temperature-dependent decomposition. However, the magnitude of the altitude effect was considerably greater for catchments with a high proportion of wetland cover, suggesting that additional controls influence these sites such as impeded respiratory loss of carbon in wet soils and/or an increased susceptibility to water level drawdown at lower altitudes. The model suggests (1) that continuing reductions in sulphur deposition on acid sensitive organo-mineral soils, will drive further significant increases in DOC and, (2) given the differences in the magnitude of the observed altitude-DOC relationships, that DOC production from catchments with peat-dominated soils may be more sensitive to climate change than those dominated by mineral soils. However, given that mechanisms remain unclear, the latter warrants further investigation. 
540 |a Springer International Publishing Switzerland, 2015 
690 7 |a Dissolved organic carbon  |2 nationallicence 
690 7 |a Dissolved organic matter  |2 nationallicence 
690 7 |a Upland waters  |2 nationallicence 
690 7 |a Acidification  |2 nationallicence 
690 7 |a Recovery  |2 nationallicence 
690 7 |a Climate change  |2 nationallicence 
690 7 |a Land use  |2 nationallicence 
700 1 |a Monteith  |D Donald  |u NERC Centre for Ecology & Hydrology, Lancaster Environment Centre, Library Avenue, Bailrigg, LA1 4AP, Lancaster, UK  |4 aut 
700 1 |a Henrys  |D Peter  |u NERC Centre for Ecology & Hydrology, Lancaster Environment Centre, Library Avenue, Bailrigg, LA1 4AP, Lancaster, UK  |4 aut 
700 1 |a Evans  |D Chris  |u NERC Centre for Ecology & Hydrology, Environment Centre Wales, Deiniol Road, LL57 2UW, Bangor, UK  |4 aut 
700 1 |a Malcolm  |D Iain  |u Marine Scotland Freshwater Laboratory, Faskally, PH16 5LB, Pitlochry, Perthshire, Scotland, UK  |4 aut 
700 1 |a Shilland  |D Ewan  |u Environmental Change Research Centre, University College London, Gower Street, WC1E 6BT, London, UK  |4 aut 
700 1 |a Pereira  |D M.  |u NERC Centre for Ecology & Hydrology, Lancaster Environment Centre, Library Avenue, Bailrigg, LA1 4AP, Lancaster, UK  |4 aut 
773 0 |t Biogeochemistry  |d Springer International Publishing  |g 123/3(2015-04-01), 363-377  |x 0168-2563  |q 123:3<363  |1 2015  |2 123  |o 10533 
856 4 0 |u https://doi.org/10.1007/s10533-015-0071-x  |q text/html  |z Onlinezugriff via DOI 
898 |a BK010053  |b XK010053  |c XK010000 
900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s10533-015-0071-x  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Monteith  |D Donald  |u NERC Centre for Ecology & Hydrology, Lancaster Environment Centre, Library Avenue, Bailrigg, LA1 4AP, Lancaster, UK  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Henrys  |D Peter  |u NERC Centre for Ecology & Hydrology, Lancaster Environment Centre, Library Avenue, Bailrigg, LA1 4AP, Lancaster, UK  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Evans  |D Chris  |u NERC Centre for Ecology & Hydrology, Environment Centre Wales, Deiniol Road, LL57 2UW, Bangor, UK  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Malcolm  |D Iain  |u Marine Scotland Freshwater Laboratory, Faskally, PH16 5LB, Pitlochry, Perthshire, Scotland, UK  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Shilland  |D Ewan  |u Environmental Change Research Centre, University College London, Gower Street, WC1E 6BT, London, UK  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Pereira  |D M.  |u NERC Centre for Ecology & Hydrology, Lancaster Environment Centre, Library Avenue, Bailrigg, LA1 4AP, Lancaster, UK  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Biogeochemistry  |d Springer International Publishing  |g 123/3(2015-04-01), 363-377  |x 0168-2563  |q 123:3<363  |1 2015  |2 123  |o 10533