Ecological Archives E096-012-A2
Susan E. Ward, Kate H. Orwin, Nicholas J. Ostle, Maria J. I. Briones, Bruce C. Thomson, Robert I. Griffiths, Simon Oakley, Helen Quirk, and Richard D. Bradgett. 2015. Vegetation exerts a greater control on litter decomposition than climate warming in peatlands. Ecology 96:113–123. http://dx.doi.org/10.1890/14-0292.1
Appendix B. Effects of vegetation diversity (number of plant functional groups).
Table B1. Effects of vegetation diversity (number of plant functional groups (PFGs) on litter decomposition, N mineralization, and soil biota.
Source of variation |
df |
F | P | Diversity differences |
|
|
|
||
Shrub litter decomposition (% mass loss) |
|
|
||
Warming |
1 |
0.0 |
0.97 |
|
Vegetation diversity |
3 |
0.7 |
0.57 |
Not significant |
Warming × diversity |
3 |
0.2 |
0.88 |
(at P < 0.05) |
|
|
|
|
|
Graminoid litter decomposition (% mass loss) |
|
|
||
Warming |
1 |
0.6 |
0.45 |
|
Vegetation diversity |
3 |
0.1 |
0.96 |
Not significant |
Warming × diversity |
3 |
1.2 |
0.30 |
(at P < 0.05) |
|
|
|
|
|
Bryophyte litter decomposition (% mass loss) |
|
|
||
Warming |
1 |
0.1 |
0.72 |
|
Vegetation diversity |
3 |
0.3 |
0.81 |
Not significant |
Warming × diversity |
3 |
0.2 |
0.93 |
(at P < 0.05) |
|
|
|
|
|
N mineralization (µg g dry wt soil-1) |
|
|
||
Warming |
1 |
2.2 |
0.14 |
Significant for 2 PFGs |
Vegetation diversity |
3 |
3.4 |
0.03 |
compared with 0 and |
Warming × diversity |
3 |
0.6 |
0.63 |
1 PFG. |
|
|
|
|
|
Enchytraeid abundance (m-2) |
|
|
||
Warming |
1 |
3.3 |
0.07 |
|
Vegetation diversity |
3 |
0.6 |
0.64 |
Not significant |
Warming × diversity |
3 |
1.3 |
0.28 |
(at P < 0.05) |
|
|
|
|
|
Diptera larvae abundance (m-2) |
|
|
||
Warming |
1 |
5.1 |
0.03 |
|
Vegetation diversity |
3 |
1.6 |
0.20 |
Not significant |
Warming × diversity |
3 |
1.8 |
0.15 |
(at P < 0.05) |
|
|
|
|
|
Bacterial community structure |
|
|
|
|
Warming |
1 |
2.2 |
0.05 |
|
Vegetation diversity |
3 |
0.2 |
0.24 |
Not significant |
Warming × diversity |
3 |
0.9 |
0.54 |
(at P < 0.05) |
|
|
|
|
|
Fungal community structure |
|
|
|
|
Warming |
1 |
0.9 |
0.62 |
|
Vegetation diversity |
3 |
1.1 |
0.45 |
Not significant |
Warming × diversity |
3 |
1.2 |
0.09 |
(at P < 0.05) |