Fig. 2From: Effects of local neighbourhood diversity on crown structure and productivity of individual trees in mature mixed-species forestsExamples for the variable outcomes resulting from different tree neighbour selection approaches: left: overlapping tree crowns; right: fixed radius of 10 m. A: C. betulus, DBH = 19.4 cm, height = 23.6 m; B: Q. robur, DBH = 81.0 cm, height = 31.0 m. Solid circle radius = 12.62 m; dashed circle radius = 22.62 m. NN = Number of neighbours; NSR = Neighbourhood species richnessBack to article page