Ecological Archives E096-067-A5

Melissa Whitman and James D. Ackerman. 2015. Terrestrial orchids in a tropical forest: best sites for abundance differ from those for reproduction. Ecology 96:693–704.

Appendix E. Plots of Moran’s I statistic over distance (meters) for null Generalized Additive Model (GAM), with and without smoothing for X,Y coordinates as a method to reduce spatial autocorrelation bias.



Fig. E1. Spatial autocorrelation significant (P = 0.001) for null model (orchid presence ~ 1).



Fig. E2. Spatial autocorrelation nonsignificant (P = 0.999), for null model with GAM smoothing function (orchid presence ~ s(X,Y) +1).

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