Spatiogenetic characteristics of beech stands with different degrees of autochthony

BMC Ecology

Table 6 Four descriptors of cluster structure (poc := proportion of individuals organized in clusters, ecs := effective cluster size, acs := average cluster size, enc := effective number of clusters) for the primary and α-isolated cluster structures

genetic difference d₀ used in d_sg, α = 0. 185
stand	primary cluster structure				α-isolated cluster structure
	poc	ecs	acs	enc	poc	ecs	acs	enc
Laubach A	.644	4.29	3.40	19.79	.386	9.86	5.10	5.17
Laubach C	.507	3.56	3.00	10.13	.310	3.09	2.75	7.12
Horn	.652	3.54	3.06	30.21	.268	2.18	2.10	20.17
Karlshafen	.641	3.51	2.94	25.96	.296	2.48	2.33	16.96
genetic difference d_Jused in d_sg, α = 0. 159
stand	primary cluster structure				α-isolated cluster structure
	poc	ecs	acs	enc	poc	ecs	acs	enc
Laubach A	.652	3.42	2.97	25.16	.295	2.44	2.29	16.01
Laubach C	.704	3.72	3.13	13.44	.394	2.43	2.33	11.53
Horn	.616	3.14	2.73	32.18	.244	2.00	2.00	20.00
Karlshafen	.592	3.07	2.63	27.35	.331	2.96	2.47	15.89
genetic difference d_urused in d_sg, α = 0. 153
stand	primary cluster structure				α-isolated cluster structure
	poc	ecs	acs	enc	poc	ecs	acs	enc
Laubach A	.182	2.83	2.67	8.47	.045	2.00	2.00	3.00
Laubach C	.479	3.94	3.40	8.63	.296	2.71	2.63	7.74
Horn	.232	3.00	2.71	12.67	.146	2.25	2.18	10.67
Karlshafen	.296	5.14	3.23	8.17	.155	2.73	2.44	8.07

N := number of individuals in a stand, N_c:= number of individuals organized in clusters, k := number of clusters, n_i:= size of the _i-th cluster. poc = N_c/N, $e c s = \sum_{i} n_{i}^{2} / N_{c}$ , acs = N_c/k, $e n c = N_{c}^{2} / \sum_{i} n_{i}^{2}$ ; hence, N_c= poc·N = acs·k = ecs·enc

ISSN: 1472-6785