Table 1. Trapping data and coefficient of variation estimation. Traps were haphazardly spread over a homogenous habitat in two wetlands. The CV was calculated using all means (to include intra-annual variation) and using only one date per year (marked with asterisks).

Bell Marsh, Fort Lewis, Washington:

		Date							CV
Species		6/27/94*	7/5/94	6/5/95	6/22/95*	7/5/95	7/6/95	6/7/96*	Ann.	Intra-Ann.
	Traps Set	4	10	5	10	12	12	5
Rana aurora	mean	19.75	27.3	4.2	5.9	3	2.417	2.8	95%	107%
	std. dev.	7.274	14.788	4.266	2.378	1.651	1.832	1.095
	range	13-29	9-52	0-10	1-9	1-6	0-6	1-4
Hyla regilla	mean	0.75	1.3	4.2	8.1	2.667	3.583	0.6	136%	86%
	std. dev.	0.957	1.567	3.899	6.244	3.143	2.021	0.894
	range	0-2	0-4	0-8	1-23	0-9	0-7	0-2

Lost Marsh, Fort Lewis, Washington:

			Date		CV
Species		6/23/95	7/3/95	7/4/95	Intra-Ann.
	Traps Set	18	18	18
Rana	mean	1.16	0.611	0.389	55%
aurora	std. dev.	1.098	1.145	0.698
	range	0-4	0-4	0-2
Hyla	mean	19.667	7	13.611	47%
regilla	std. dev.	6.624	6.508	9.9
	range	8-36	0-27	1-32
Ambystoma	mean	2.722	2.167	0.722	55%
macrodactylum	std. dev.	1.565	2.572	0.958
	range	0-5	0-9	0-3

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