Merav Ben-David, Gail M. Blundell, John W. Kern, Julie A. K. Maier, Evelyn D. Brown, and Stephen C. Jewett. 2005. Communication in river otters: creation of variable resource sheds for terrestrial communities. Ecology 86:1331–1345.

Appendix A (Table A1). Results of models describing the relation between otter counts and terrestrial and marine habitat variables for coastal river otters in Prince William Sound, Alaska, USA.

Model			Social		Nonsocial
	Variables		Coefficient	P value	Coefficient	P value
Otter count	Old growth presence		0.39	0.082	0.45	0.004
	Vegetative slope		0.02	0.013	-0.003	0.527
	Tidal slope		0.03	<0.0001	-0.003	0.556
	Dominant marine vegetation	Leafy Brown	0.34	0.247	0.39	0.039
		Other	0.00		0.00
	Dominant marine substrate	Rock Reef/Boulders	-0.51	0.001	-0.30	0.695
		Cobbles/Gravel	-1.43		-0.30
		Sand/Mud	0.00		0.00
		Mixed	-1.55		-0.43