a strong trendP = 0.052
By April, measurements still showed a strong trend towards being higher in invaded plots (F 1,3 = 9.83, P = 0.052), although the difference was reduced by May (Fig. 4 ).
By April, measurements still showed a strong trend towards being higher in invaded plots (F 1,3 = 9.83, P = 0.052), although the difference was reduced by May (Fig. 4 ).