Upper Midwest Environmental Sciences Center

Figure 2a: Estimated power to detect temporal trends in mayfly relative abundance under the current sampling intensity in Pool 4. Trends assumed exponential.

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Estimating power to detect temporal trends in LTRM metrics

Figure 2a: Estimated power to detect temporal trends in mayfly (Ephemeridae) relative abundance under the present sampling intensity in Pool 4. Trends assumed exponential.

larger scale

Figure 2a

Disclaimer: This information is provided to help better inform ongoing LTRM 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, LTRM statistician, Upper Midwest Environmental Sciences Center, La Crosse, Wisconsin, at brgray@usgs.gov.

Page Last Modified: April 17, 2018