Figure 1d. Estimated power to detect temporal trends in mayfly relative abundance in Pool 13, all current samples allocated to the impounded stratum (n = 120). Trends assumed exponential.

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Long Term Resource Monitoring Program

Estimating power to detect temporal trends in LTRMP metrics

Figure 1d. Estimated power to detect temporal trends in mayfly (Ephemeridae) relative abundance in Pool 13, all present samples (n = 120) allocated to the impounded stratum. Trends assumed exponential.

larger scale

Figure 1d

Disclaimer: This information is provided to help better inform ongoing LTRMP partner discussions. The power plots are generated from small sample sizes; all plots should be treated as approximate.

Contact: Questions or comments may be directed to Brian Gray, LTRMP statistician, Upper Midwest Environmental Sciences Center, La Crosse, Wisconsin, at brgray@usgs.gov.

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