Table 4. Mean values ±1 SE of seven environmental factors measured near alive and dead Pilosocereus robinii plants at BPKW and BPKE.

	Alive			Dead
Percent Canopy Cover	48.94	±	4.86	48.59	±	4.12
Mean Elevation (m)	0.97	±	0.05	1.07	±	0.05
Mean Diameter (cm)	5.91	±	0.62	5.26	±	0.47
Mean Distance (cm)	130.4	±	10.96	107.27	±	8.59
Mean Height (m)	3.54	±	0.16	3.41	±	0.17
Tallest Height (m)	5.64	±	0.29	5.86	±	0.28
Soil salinity (ppm)	385	±	71	517	±	96

Elevation and soil salinity discriminated live from dead plants, but the other factors did not. Mean diameter, mean distance, and mean height refer to the nearest living woody neighbor >2 m tall from P. robinii plants. Further description of environmental variables can be found in text.