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Table 4 Differences in individual height, biomass and its allocation between fruiting and non-fruiting plants in ancient and recent forests, assessed using linear models (n = 100 per variant)

From: Forest land use discontinuity and northern red oak Quercus rubra introduction change biomass allocation and life strategy of lingonberry Vaccinium vitis-idaea

Response Variable Estimate SE t Pr(>|t|)
Mean height (cm) (Intercept) 10.1095 0.2406 42.0183 < 0.0001
Adj. R2 = 0.122 Land use: recent forest 0.9530 0.2778 3.4303 0.0007
Fruiting: yes −1.8780 0.2778 −6.7598 < 0.0001
Dry stem biomass (g) (Intercept) 0.1147 0.0049 23.5465 < 0.0001
Adj. R2 = 0.071 Land use: recent forest −0.0088 0.0056 −1.5659 0.1182
Fruiting: yes −0.0309 0.0056 −5.4852 < 0.0001
Dry foliage biomass (g) (Intercept) 0.1854 0.0081 22.7968 < 0.0001
Adj. R2 = 0.141 Land use: recent forest −0.0762 0.0094 −8.1100 < 0.0001
Fruiting: yes 0.0114 0.0094 1.2151 0.2251
Dry aboveground biomass (g) (Intercept) 0.3953 0.0118 33.4828 < 0.0001
Adj. R2 = 0.241 Land use: recent forest −0.1209 0.0136 −8.8674 < 0.0001
Fruiting: yes −0.0966 0.0136 −7.0902 < 0.0001
Leaf mass fraction (Intercept) 0.4384 0.0111 39.4632 < 0.0001
Adj. R2 = 0.469 Land use: recent forest −0.0533 0.0128 −4.1551 < 0.0001
Fruiting: yes 0.2355 0.0128 18.3591 < 0.0001
Stem mass fraction (Intercept) 0.2909 0.0088 33.1052 < 0.0001
Adj. R2 = 0.232 Land use: recent forest 0.1122 0.0101 11.0603 < 0.0001
Fruiting: yes 0.0057 0.0101 0.5597 0.5760
  1. t - test statistic, adjusted (Adj.) R2 – coefficient of determination