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  Estimating power to detect temporal trends in LTRMP metrics

 

legendFigure 2b: Estimated power to detect temporal trends in mayfly (Ephemeridae) relative abundance under the present sampling intensity in Pool 26. Trends assumed exponential.

larger scale

Figure 2b

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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Page Last Modified: October 2, 2007