Millett Edmondson final resub no track changes no mendley.pdf (208.39 kB)
Download fileThe impact of 36 years of grazing management on soil nitrogen (N) supply rate and Salix repens N status and internal cycling in dune slacks
journal contribution
posted on 2015-10-14, 10:56 authored by Jonathan MillettJonathan Millett, Sally EdmondsonAims: To determine the impact of long-term rabbit and sheep grazing on Salix repens N status (green and abscised leaf N content and C:N ratio), internal N dynamics and soil N supply rate in dune slacks. Methods: Herbivore exclosures were erected in dune slacks at Ainsdale Sand Dunes NNR, creating three grazing treatments: rabbit grazing; rabbits excluded for 36 years; rabbit grazing followed by sheep and rabbit grazing for 18 years. Soil N supply rate was analysed using ion exchange membranes; leaf N dynamics of S. repens were measured over one summer. Results: Soil N supply rate was higher in ungrazed plots. There was no difference in green leaf NMASS or C:N ratio between treatments, but N dynamics differed. Adding sheep to existing rabbit grazing reduced S. repens N resorption efficiency (REFF) from 67 to 37 %; excluding rabbits had no impact. Litter NMASS was lower and C:N ratio higher in ungrazed plots. Conclusions: Grazing can impact significantly on leaf N resorption, but this impact depends on the grazing regime.
Funding
This study was funded by the Botanical Society of the British Isles.
History
School
- Social Sciences
Department
- Geography and Environment
Published in
Plant and SoilCitation
MILLETT, J. and EDMONDSON, S., 2015. The impact of 36 years of grazing management on soil nitrogen (N) supply rate and Salix repens N status and internal cycling in dune slacks. Plant and Soil, 396(1), pp. 411–420.Publisher
© Springer International Publishing SwitzerlandVersion
- AM (Accepted Manuscript)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2015Notes
The final publication is available at Springer via http://dx.doi.org/10.1007/s11104-015-2628-9ISSN
0032-079XPublisher version
Language
- en