The joint plot of NMDS ordination for plant species composition. All replicate plots of each study site with vegetation surveys done in late May, July and early September in 2004 and 2005. The vectors of environmental variables with strongest correlation to ordination axes (r > |0.5|) are shown. The upper panel (a) includes axis 1 and axis 2 and the lower panel (b) includes axis 1 and axis 3.

  Part of: Niemi M, Pöyry J, Heiskanen I, Uotinen V, Nieminen M, Erkomaa K, Wallenius K (2014) Variability of soil enzyme activities and vegetation succession following boreal forest surface soil transfer to an artificial hill. Nature Conservation 8: 1-25.