marginally nonsignificantp = 0.060
Although this effect was marginally nonsignificant based on the omnibus test ( p = 0.060), the mean effect size estimate for external fertilisers was negative ( r b = −0.13 [−0.21, −0.05]; Table 1 ) whereas for internal fertilisers the estimate was not statistically different from zero ( r b = −0.01 [−0.11, 0.08]; Table 1 ).