At stony sites, three-dimensional solutions (P€aij€anne:
final stress = 11.5; Saimaa: final stress = 11.2) in the
NMS ordination analysis best described the variation
in macroinvertebrate community composition in both
lakes. Sites were clustered according to crayfish status
across axes 2 and 3 in P€aij€anne and axes 1 and 3 in
Saimaa (Fig 4a,b).