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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
| Content Provider | Semantic Scholar |
|---|---|
| Author | Millett, James Edmondson, Stuart |
| Copyright Year | 2015 |
| Abstract | AimsTo 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.MethodsHerbivore 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.ResultsSoil 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.ConclusionsGrazing can impact significantly on leaf N resorption, but this impact depends on the grazing regime. |
| Starting Page | 411 |
| Ending Page | 420 |
| Page Count | 10 |
| File Format | PDF HTM / HTML |
| DOI | 10.1007/s11104-015-2628-9 |
| Alternate Webpage(s) | https://dspace.lboro.ac.uk/dspace-jspui/bitstream/2134/19023/3/Millett%20%20Edmondson%20final%20resub%20%20no%20track%20changes%20no%20mendley.pdf |
| Alternate Webpage(s) | https://doi.org/10.1007/s11104-015-2628-9 |
| Volume Number | 396 |
| Journal | Plant and Soil |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
