Intra- and interspecific competition differently influence growth and stem quality of young oaks (Quercus robur L. and Quercus petraea (Mattuschka) Liebl.)

Table 5 Mean distance between target oaks and competing trees from different groups of species

Site	Type of competitors
	Competing oaks (m)		Pioneer species (m)		Mid- and late-successional species (m)
	Mean	S.E.	Mean	S.E.	Mean	S.E.
Altenheim	1.72	0.05	n.a.	n.a.	1.92	0.05
Kaisereiche	1.87	0.05	2.08	0.14	2.27	0.09
Lerchenfeld	1.84	0.05	2.1	0.08	2.23	0.52
Gerlingen	1.03	0.04	2.63	0.08	2.4	0.11
Gerchsheim	0.9	0.07	1.5	0.25	2.07	0.14
Königheim	1.07	0.09	2.46	0.25	2.39	0.13
Leonberg	1.06	0.03	1.76	0.12	2.03	0.06

ISSN: 1297-966X