Thomas C. Edwards, Jr., D. Richard Cutler, Niklaus E. Zimmerman, Linda Geiser, and Jim Alegria. 2005. Model-based stratifications for enhancing the detection of rare ecological events. Ecology 86:1081–1090.

Appendix A (Table A1). The expected number of detections based on model-assisted sampling for Pseudocyphellaria rainierensis from classification tree model of Lobaria oregana.

	No. of sites in PILOT	No. of detections in PILOT data set		No. of sites proposed	No. of expected detections
		Pseudocyphellaria rainierensis			Pseudocyphellaria rainierensis
0.0 – 0.2	228	2		12	0.1
0.2 – 0.4	11	0		36	0.0
0.4 – 0.6	36	0		60	0.0
0.6 – 0.8	3	0		84	0.0
0.8 – 1.0	22	0		108	0.0
Total	300	2		300	0.1

   Note: The class-wise expected detection frequency is calculated as the fraction occurencies per PILOT site number (per class) × the number of proposed sites from the model-assisted design: e.g., 2/228*12 = 0.1 for Pseudocyphellaria rainierensis of class 0.0 – 0.2.