Fig. 2From: A field experimental study on the impact of Acer platanoides, an urban tree invader, on forest ecosystem processes in North AmericaMineralization rate (a), nitrification rate (b), and relative nitrification (c) in soils under red maple adults in mixed forest (RMmix), Norway maple adults in mixed forest (NMmix), and Norway maple adults in monospecific stand (NMmon). The graph shows means ± 1 SDBack to article page