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Blaen, PJ, Milner, AM, Hannah, DM et al. (2 more authors) (2013) Impact of changing hydrology on nutrient uptake in high arctic rivers. River Research and Applications. ISSN 1535-1459
Abstract
Despite the importance of river nutrient retention in regulating downstream water quality and the potential alterations to nutrient fluxes associated with climate-induced changes in Arctic hydrology, current understanding of nutrient cycling in Arctic river systems is limited. This study adopted an experimental approach to quantify conceptual water source contributions (meltwater, groundwater), environmental conditions and uptake of NO , NH , PO and acetate at 12 headwater rivers in Svalbard and so determine the role of changing hydrology on nutrient uptake in these Arctic river systems. Most rivers exhibited low demand for NO and PO , but demand for NH and acetate was more variable and in several rivers comparable with that measured in sub-Arctic regions. The proportion of meltwater contributing to river flow was not significantly related to nutrient uptake. However, NH uptake was associated positively with algal biomass, water temperature and transient storage area, whereas acetate uptake was associated positively with more stable river channels. Mean demand for NH increased when added with acetate, suggesting NH retention may be facilitated by labile dissolved organic carbon availability in these rivers. Consequently, nutrient export from Arctic river systems could be influenced in future by changes in hydrological and environmental process interactions associated with forecasted climate warming.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2013, Wiley Blackwell. This is an author produced version of a paper published in River Research and Applications. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Geography (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 11 Dec 2013 13:20 |
Last Modified: | 05 Aug 2017 14:16 |
Published Version: | http://dx.doi.org/10.1002/rra.2706 |
Status: | Published |
Publisher: | Wiley Blackwell |
Identification Number: | 10.1002/rra.2706 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:77146 |
Available Versions of this Item
- Impact of changing hydrology on nutrient uptake in high arctic rivers. (deposited 11 Dec 2013 13:20) [Currently Displayed]