Table 1.

Results of generalized mixed linear models (GLMMs) performed to assess the variation in open fruit set, pollen limitation, pollen production and pollen receipt among two fragments of forest (BP, BH) and one continuous population (GB) ofP. virginiana

Response variable	Statistics	P-value	Random effect s.d.
Open fruit set*	F2,96 = 13·305	< 0·001	2·72E-06
Pollen limitation†	F2,87 = 6·8713	< 0·01	0
Pollen production†	F2,44 = 3·478	0·18	0·16267
Pollen receipt†	F2,42 = 11·113	< 0·01	0·14195

Only the minimal adequate models are shown, with population as the only fixed effect and patch nested in each population as random effect.

Significant values are given in bold.

*GLMM with binomial distribution function.

^†GLMM with Poisson distribution.