Table 1.

Mean reflectance scores and t test statistics comparing RGB values of slug and substrate images from forested (N = 104 images) and blanket bog (N = 71 images) habitats

		Forested habitats		Blanket bog habitats		Between-habitats t-tests
	Channel	Mean	SD	Mean	SD	Mean Diff.	t(173)	p
Slug	R	111.68	20.31	53.54	15.34	58.16	21.53	<0.001
	G	98.45	17.69	47.44	15.72	50.98	19.56	<0.001
	B	88.95	17.96	48.66	19.71	40.27	13.99	<0.001
Substrate	R	111.12	23.09	53.21	16.04	57.95	19.62	<0.001
	G	94.14	21.34	50.74	16.41	43.38	15.18	<0.001
	B	86.89	20.04	52.78	20.85	34.09	10.87	<0.001