Shrub-oak seedling spatial associations change in response to the functional composition of neighbouring shrubs in coastal dune forest communities

Table 2 Association frequency and percentage of patterns of the seedlings of the three oak species with the four functional groups of shrubs in the eleven 315-m² plots derived from pair correlation function and chi-square analyses

Analysis Method	Functional group	Positive	Negative	Independent	Total
Pair correlation function	Fagaceae	9 (56.25)	4 (25)	3 (18.75)	16
	Intraspecific	7 (43.75)	2 (12.5)	1 (6.25)	10
	Interspecific	2 (12.5)	2 (12.5)	2 (12.5)	6
	Spiny	3 (42.86)	3 (42.86)	1 (14.29)	7
	Fabaceae	3 (37.5)	2 (25)	3 (37.5)	8
	Ericaceae	2 (16.67)	7 (58.33)	3 (25)	12
Chi-square	Fagaceae	7 (43.75)	7 (43.75)	2 (12.5)	16
	Intraspecific	(6) (37.5)	3 (18.75)	1 (6.25)	10
	Interspecific	1 (6.25)	4 (25)	1 (6.25)	6
	Spiny	2 (28.57)	3 (42.86)	2 (28.57)	7
	Fabaceae	3 (37.5)	2 (25)	3 (37.5)	8
	Ericaceae	3 (25)	6 (50)	3 (25)	12

The values in bold correspond to the highest values of association pattern recorded among the three types of associations (positive, negative and independent) for each of the four functional groups of shrubs. Fagaceae shrubs are sub-divided into intraspecific and interspecific association

ISSN: 1297-966X