Table 1

Results from the nested analyses of variance of treatment effects on the biomass (g/m2) of plant functional groups in low shrub tundra, Kangerlussuaq, Greenland

Source of variation

Variable
 W
 E
 Y
 E*W
 E*W*Y

F
 p
 F
 p
 F
 p
 F
 p
 F
 p

B. nana leaf
 1.051
 0.332
 1.677
 0.221
 10.546
 0.003a
 3.365
 0.099
 0.627
 0.771
B. nana stem
 0.330
 0.579
 2.460
 0.130
 8.780
 0.004a
 24.907
 0.001a
 0.122
 0.999
Graminoids
 4.363
 0.065
 0.074
 0.789
 100.602
 <0.001a
 0.517
 0.490
 0.228
 0.990
Forbs
 1.777
 0.215
 0.000
 0.985
 10.216
 0.003a
 3.730
 0.085
 0.646
 0.754

W: warming treatment, E: exclosure treatment, Y: year. a marks significance level of p ≤ 0.05.

Pedersen and Post BMC Ecology 2008 8:17   doi:10.1186/1472-6785-8-17