Coastal and interior Douglas-fir provenances differ in growth performance and response to drought episodes at adult age

Table 3 Variance components as a percentage of total model variance; significant parameters (P ≤ 0.05) in bold for each variable

Source of variation	LWP	MRD	EWD	LWD	STD	BA	GI₂₀₀₃	GI₂₀₀₄
Site	0.00	0.07	0.06	0.12	0.03	0.20	0.03	0.17
Provenance	0.30	0.09	0.38	0.08	0.36	0.47	0.09	0.13
Site × Provenance	0.04	0.03	0.03	0.04	0.03	0.04	0.05	0.07
Residuals	0.66	0.81	0.53	0.76	0.58	0.29	0.83	0.63

WP: latewood proportion, MRD: mean ring density, LWD: mean latewood density, EWD: mean earlywood density, STD standard deviation of intra-ring density, BA: basal area, GI₂₀₀₃ growth index in 2003, GI₂₀₀₄ growth index in 2004

ISSN: 1297-966X