1) Relative neighbor effect is the positive or negative effect that a neighbor plant has on a target individual.

1) Relative neighbor effect is the positive or negative effect that a neighbor plant has on a target individual. In figure 1, sites b,d, and g are showing a different relative RNE (Relative Neighbor Effect) at low elevations, compared to the other sites. In figure 1, what does it mean to have a positive RNE? Why might these low elevation sites have a positive RNE?