Jeffrey R. Dunk, William J. Zielinski, and Haiganoush K. Preisler. 2004. Predicting the occurrence of rare mollusks in northern California Forests. Ecological Applications 14:713–729.

Variable	Ancotrema voyanum (450 ha)			Helminthoglypta talmadgei (1250 ha)			Monadenia churchi (1250 ha)			Monadenia fidelis klamathica (<200 ha)			Monadenia fidelis ochramphalus (50 ha)
	Present	Absent		Present	Absent		Present	Absent		Present	Absent		Present	Absent
Plantations (ha)	75.83 (58.63)	52.02 (65.04)*		223.18 (222.47)	66.85 (90.40)*		64.50 (78.11)	87.68 (134.97)		31.69 (22.99)	33.18 (38.70)		17.67 (11.87)	6.04 (10.56)**
Young conifer, low density (ha)	33.18 (43.49)	62.71 (71.79)**		166.54 (169.49)	221.27 (160.60)		247.81 (161.69)	234.60 (195.97)		6.09 (9.87)	21.53 (25.29)**		3.74 (9.21)	6.24 (8.59)
Young conifer (ha)	37.35 (40.65)	53.27 (43.76)		182.71 (100.97)	170.87 (106.53)		135.35 (132.26)	185.17 (165.20)**		20.03 (15.77)	22.98 (33.24)		4.01 (3.60)	5.69 (8.21)
Hardwoods (ha)	23.46 (44.04)	19.21 (40.59)		1.71 (4.85)	43.42 (89.41)*		48.15 (78.06)	38.28 (66.39)*		18.90 (20.80)	14.36 (24.71)		3.41 (6.37)	1.95 (6.45)
Late seral conifer, low density (ha)	17.70 (24.59)	26.61 (39.82)		27.54 (43.86)	68.19 (109.23)*		7.42 (21.27)	15.75 (35.38)		11.32 (16.00)	15.19 (19.98)		3.39 (5.40)	5.05 (9.08)
Late seral conifer (ha)	142.69 (105.67)	99.94 (85.42)*		222.31 (166.99)	256.88 (176.29)		243.21 (188.62)	239.18 (194.80)		34.14 (36.31)	38.28 (39.12)		5.59 (7.96)	11.33 (11.95)*
Late seral hardwood dominated (ha)	48.96 (68.89)	50.70 (83.06)		0.00 (0.00)	106.72 (206.20)**		16.57 (59.54)	24.91 (65.86)		58.56 (41.80)	28.74 (40.31)*		5.09 (7.16)	4.75 (9.52)
Streams (km)	8.63 (3.53)	7.72 (3.48)		27.33 (4.99)	25.34 (9.92)		30.71 (13.32)	23.67 (11.04)**		2.79 (1.38)	3.26 (1.38)		1.24 (0.64)	0.97 (0.70)
Roads (km)	5.43 (3.37)	5.62 (4.53)		16.10 (8.23)	11.37 (10.91)		14.86 (10.70)	16.24 (11.05)		4.19 (2.49)	2.47 (2.04)*		1.26 (0.71)	0.52 (0.59)**

  *P < 0.10, **P < 0.05.