Table 2. ANOVAs for the effects of area, site, burial height, nutrient availability and their interactions on total biomass, specific shoot height (SSH) and root to shoot ratio of Sporobolus virginicus clones.
Total biomass (g DW) | SSH (cm g−1 DW) | Root to shoot ratio | |||||
Source | d.f. | MS | F | MS | F | MS | F |
Area = A | 1 | 0.02 | 0.14 | 9936 | 10.01 | 0.05 | 2.63 |
Burial = B | 3 | 0.39 | 0.71 | 49224 | 9.66*** | 0.12 | 2.44 |
Nutrient = N | 1 | 2.82 | 3.08 | 2692 | 0.53 | 0 | 0.04 |
Site(A) = S(A) | 2 | 0.18 | 1.34 | 993 | 0.17 | 0.02 | 0.35 |
A × B | 3 | 0.55 | 4.16** | 5058a | 0.01a | ||
A ×N | 1 | 0.92 | 6.92* | 9523a | 0.11a | ||
N × B | 3 | 0.48 | 3.62** | 4553 | 0.89 | 0.01 | 0.23 |
B × S(A) | 6 | 0.03a | 2244a | 0.01a | |||
N × S(A) | 2 | 0.11a | 8647 | 1.7 | 0.06a | ||
A × N × B | 3 | 0.12a | 115a | 0.06a | |||
N × B × S(A) | 6 | 0.14a | 3287a | 0.05a | |||
Residual | 62 | 0.14a | 5717a | 0.05a | |||
SNK | A2: NB = AC >PB > CB; | CB >PB > NB = AC | |||||
NB: A2> A1; | |||||||
N-: A2> A1; N+: A1> A2; | |||||||
A1 & A2: N+ > N- | |||||||
N+: NB = AC = PB > CB; | |||||||
NB & AC & PB, N+> N- |
Denotes post-hoc pooling, P>0.25; new F-values are given for those tested against the pooled term. Results of SNK tests are also reported. NB = no burial, AC = artifact control, CB = complete burial, PB = partial burial. A1, A2 = area 1 or 2, S1, S2 = site 1 or 2, N− = no nutrient added, N+ = nutrient added.
= P<0.05.
= P<0.01.
=
P<0.001.