Please use this identifier to cite or link to this item:
Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: Catchment land use effects on fluxes and concentrations of organic and inorganic nitrogen in streams
Authors: Vogt, Esther
Braban, Christine F
Dragosits, Ulrike
Durand, Patrick
Sutton, Mark A
Theobald, Mark R
Rees, Robert M
McDonald, Chris
Murray, Scott
Billett, Michael
Contact Email:
Keywords: Nitrogen
Organic nitrogen
Stream export
Catchment flux
Land use
Issue Date: 1-Jan-2015
Publisher: Elsevier
Citation: Vogt E, Braban CF, Dragosits U, Durand P, Sutton MA, Theobald MR, Rees RM, McDonald C, Murray S & Billett M (2015) Catchment land use effects on fluxes and concentrations of organic and inorganic nitrogen in streams, Agriculture, Ecosystems and Environment, 199, pp. 320-332.
Abstract: We present annual downstream fluxes and spatial variation in concentrations of dissolved inorganic nitrogen (NH 4+and NO3−) and dissolved organic nitrogen (DON) in two adjacent Scottish catchments with contrasting land use (agricultural grassland vs. semi-natural moorland). Inter- and intra-catchment variation in N species and the relation to spatial differences in agricultural land use were studied by determining catchment N input through agricultural activities at the field scale and atmospheric inputs at a 25m grid resolution. The average agricultural N input of 52 kg N ha−1 yr−1 to the grassland catchment was more than 4 times higher than the input of 12 kg N ha−1 yr−1 to the moorland catchment, supplemented by 12.3 and 8.2 kg N ha−1 yr−1 through atmospheric deposition, respectively. The grassland catchment was associated with an annual downstream total dissolved nitrogen (TDN) flux of 14.4 kg N ha−1 yr−1, which was 66% higher than the flux of 8.7 kg ha−1 yr−1 from the moorland catchment. This difference was largely due to the NO3− flux being one order of magnitude higher in the grassland catchment. Dissolved organic N fluxes were similar for the two catchments (7.0 kg ha−1yr−1) with DON contributing 49% to the TDN flux in the grassland compared with 81% in the moorland catchment. The results highlight the importance of diffuse agricultural N inputs to stream NO3− concentrations and the importance of quantifying all the major aquatic N species for developing a better understanding of N transformations and transport in the atmosphere-soil-water system.
Type: Journal Article
DOI Link:
Rights: The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.
Affiliation: Centre for Ecology & Hydrology (CEH)
Centre for Ecology & Hydrology (CEH)
Centre for Ecology & Hydrology (CEH)
Institut National de la Recherche Agronomique
Centre for Ecology & Hydrology (CEH)
Centre for Ecology & Hydrology (CEH)
Scotland's Rural College (SRUC)
Scotland's Rural College (SRUC)
Scotland's Rural College (SRUC)
Biological and Environmental Sciences

Files in This Item:
File Description SizeFormat 
Vogt et al_AEE_2015.pdf2.48 MBAdobe PDFUnder Embargo until 31/12/2999     Request a copy

Note: If any of the files in this item are currently embargoed, you can request a copy directly from the author by clicking the padlock icon above. However, this facility is dependant on the depositor still being contactable at their original email address.

This item is protected by original copyright

Items in the Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

If you believe that any material held in STORRE infringes copyright, please contact providing details and we will remove the Work from public display in STORRE and investigate your claim.