Effects of composition of experimental landscapes on (a) number of species (i.e. across entire landscape), (b) average number of species in sparse turfs (Sparse, Sharp and Gradual), and (c) in dense turfs (Dense, Sharp and Gradual).

† Tested against the pooled term: Residual+C×S.
Composition is a fixed factor with four levels in a) and three levels in b) and c). Site is random with two levels; n  = 3. All four variables are averages calculated for each experimental landscape. Means and SNK tests are in Fig. 2.