Ecological Archives E096-012-A1
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 A. Effects of warming and plant functional groups on litter mass loss.
Table A1. Effects of warming, the presence/absence of plant functional groups, and interactions between warming and plant functional group presence, on litter mass loss for: (a) All litter species (means), (b) Calluna litter, (c) Eriophorum litter, and (d) Hypnum litter.
Source of variation |
df |
F |
P | df |
F |
P |
|
Year 1 |
Year 2 |
||||
a) All litter |
|
|
||||
Litter species identity |
2 |
42.9 |
<0.0001 |
2 |
3.1 |
0.05 |
Warming |
1 |
0.0 |
0.95 |
1 |
1.7 |
0.20 |
Shrub presence/absence |
1 |
1.2 |
0.27 |
1 |
12.9 |
0.0004 |
Graminoid presence/absence |
1 |
0.2 |
0.64 |
1 |
2.2 |
0.14 |
Bryophyte presence/absence |
1 |
2.1 |
0.15 |
1 |
1.5 |
0.22 |
Warming × shrub |
1 |
0.1 |
0.78 |
1 |
3.9 |
0.05 |
Warming × graminoid |
1 |
0.8 |
0.37 |
1 |
0.1 |
0.75 |
Warming × bryophyte |
1 |
1.7 |
0.20 |
1 |
0.6 |
0.43 |
|
|
|
|
|
|
|
b) Calluna litter |
|
|
|
|
|
|
Warming |
1 |
0.1 |
0.83 |
1 |
0.0 |
0.98 |
Shrub presence/absence |
1 |
1.8 |
0.18 |
1 |
2.9 |
0.10 |
Graminoid presence/absence |
1 |
0.7 |
0.40 |
1 |
0.3 |
0.59 |
Bryophyte presence/absence |
1 |
0.0 |
0.96 |
1 |
0.0 |
0.89 |
Warming × shrub |
1 |
0.6 |
0.44 |
1 |
0.9 |
0.35 |
Warming × graminoid |
1 |
0.2 |
0.62 |
1 |
0.5 |
0.47 |
Warming × bryophyte |
1 |
0.3 |
0.57 |
1 |
0.0 |
0.97 |
|
|
|
|
|
|
|
c) Eriophorum litter |
|
|
|
|
|
|
Warming |
1 |
0.2 |
0.63 |
1 |
1.7 |
0.20 |
Shrub presence/absence |
1 |
1.4 |
0.24 |
1 |
6.9 |
0.01 |
Graminoid presence/absence |
1 |
0.0 |
0.85 |
1 |
1.7 |
0.20 |
Bryophyte presence/absence |
1 |
0.1 |
0.75 |
1 |
0.5 |
0.47 |
Warming × shrub |
1 |
0.1 |
0.73 |
1 |
0.4 |
0.54 |
Warming × graminoid |
1 |
0.0 |
0.99 |
1 |
0.6 |
0.45 |
Warming × bryophyte |
1 |
0.0 |
0.93 |
1 |
1.0 |
0.32 |
|
|
|
|
|
|
|
d) Hypnum litter |
|
|
|
|
|
|
Warming |
1 |
0.1 |
0.75 |
1 |
0.9 |
0.34 |
Shrub presence/absence |
1 |
0.0 |
0.90 |
1 |
1.5 |
0.04 |
Graminoid presence/absence |
1 |
1.7 |
0.20 |
1 |
2.5 |
0.12 |
Bryophyte presence/absence |
1 |
4.5 |
0.04 |
1 |
1.6 |
0.22 |
Warming × shrub |
1 |
0.1 |
0.76 |
1 |
2.4 |
0.13 |
Warming × graminoid |
1 |
0.9 |
0.36 |
1 |
0.1 |
0.76 |
Warming × bryophyte |
1 |
1.7 |
0.20 |
1 |
0.2 |
0.64 |
P values in bold are statistically significant (P < 0.05).