marginally significantP = 0.054
3 Results 3.1 Impacts of ecosystem engineers on the growth of associated plants The microhabitat type had significant effects (marginally significant for L. longifolium in the DML population; P = 0.054) on both individual height and mass for all study species in all populations, except for L. perenne mass parameters in the YLS population ( Table 1 ; Figure 2 ).