Table S2.

Linear mixed model of the crown radius in m of all analyzed trees (response variable), with the individual tree code as random effect and fixed effects distance to next obstacle (trees and buildings) related to the intercardinal direction factor.

ParameterFixed effectValue ± SDP
aIntercept4.49 ± 0.27< 0.001
distanceijDistance to obstacle0.001 ± 0.004< 0.001
directionNijDirection N−0.08 ± 0.060.01
directionNEijDirection NE−0.002 ± 0.060.06
directionNWijDirection NW−0.13 ± 0.060.06
directionSijDirection S0.10 ± 0.060.06
directionSEijDirection SE0.14 ± 0.060.06
directionSWijDirection SW−0.001 ± 0.060.06
directionWijDirection W−0.18 ± 0.060.06
Random effect dij0.31-
ε0.10-
  • Levels of direction: 8 (E, N, NE, NW, S, SE, SW, W).

  • SD (standard deviation).