Diversity and production in an Afromontane Forest

Forest Ecosystems

Table 2 Relationship between by the basal area increment cm²/year during the 25-year period 1972 to 1997 and the four structure variables (symbols defined previously), expressed by the coefficients of a multiple linear regression, for the ten most common species, represented by at least 50 individuals. RSE = residual standard error; iba = average basal area increment cm²/year

Species	N	iba	M	D	W	T	RSE	R²
Apodytes dimidiata	124	2.9	0.8420 ns	3.333^c	0.8156 ns	0.3424 ns	3.089	0.51
Elaeodendron croceum	125	2.3	1.9731^b	3.1575^c	−0.5256 ns	−0.1873 ns	1.748	0.67
Curtisia dentata	303	3.4	1.4611^a	3.389^c	−0.1106 ns	1.131 ns	3.015	0.58
Gonioma kamassi	379	1.8	1.205 ^c	0.9251^c	0.6956^a	0.3578 ns	1.383	0.63
Nuxia floribunda	53	2.3	0.5292 ns	1.762 ^a	0.6324 ns	1.221 ns	1.736	0.68
Ocotea bullata	82	5.3	−0.3746 ns	6.6231^b	−7.1909^a	5.3022 ns	6.027	0.53
Olea capensis macrocarpa	569	8.7	−0.7417 ns	11.87^c	0.5479 ns	2.824 ns	7.538	0.63
Podocarpus latifolius	292	5.3	0.4192 ns	6.286^c	−1.235 ns	4.063^b	3.957	0.69
Pterocelastrus tricuspidatus	142	6.7	0.6504 ns	7.1894^c	5.0142^a	1.4604 ns	5.010	0.68