Little ecological divergence associated with speciation in two African rain forest tree genera

Table 1 Sister species characteristics in Isolona and Monodora as well as results from the PCA and, the similarity and background tests.

				Mann-Whitney U					Identity test		Background test (1)
Species pair	% geographical overlap	Smaller Range species	MRCA age (95% confidence interval)	PC1	PC2	PC3	D	I	D	I	D	I
*Isolona*
pleurocarpa-zenkeri	19.6	pleurocarpa	4.5 (1.4-7.9)	*	NS	***	0,25	0,50	***	***	more /more	more /more *
dewevrei-thonneri	8.9	dewevrei	2.5 (0.4-4.8)	***	NS	***	0,41	0,63	***	***	NS/NS	NS/NS
heinsenii-linearis	32	linearis	2.6 (0.7-4.8)	*	NS	NS	0,40	0,62	***	***	less ***/NS	less **/more
campanulata-cooperi	16	cooperi	2.8 (0.9-5.2)	NS	*	NS	0,53	0,69	***	***	NS/more *	NS/NS
congolana-hexaloba	12.6	congolana	6 (2.7-9.8)	***	**	**	0,44	0,60	***	***	NS/NS	NS/NS
*Monodora*
carolinae-stenopetala	0	no overlap	2.6 (0.9-4.4)	NS	**	**	0,21	0,49	***	***	*** more/NS	*** more/NS
hastipetala-junodii	89.3	hastipetala	1.5 (0.2-3.2)	NS	*	NS	0,05	0,35	***	***	less /less **	less /less **
laurentii-myristica	14.3	laurentii	2.4 (0.6-4.8)	*	NS	NS	0,55	0,70	***	***	more */more *	more */more *
myristica-undulata	35.7	undulata	1.6 (NE)	**	***	***	0,43	0,64	***	***	NS/NS	more */NS
crispata-tenuifolia	43	crispata	3.8 (NE)	NS	***	NS	0,46	0,66	***	***	more **/more	more **/more
laurentii-undulata	0	no overlap	2.4 (0.6-4.8)	NS	**	**	0,23	0,50	***	***	more */more *	more **/more

NE = not estimated
*** P < 0,001
** P < 0,01
* P < 0,05
NS not significant
1) the first value corresponds to the test of the first species vs the background of second, and then vice versa

ISSN: 2730-7182