Upper Midwest Environmental Sciences Center

Figure 4a: Estimated power to detect temporal trends in bluegill catch-per-unit effort in Pool 8 in all sampled strata (backwater, main channel border, wing dam, side channel strata) under current sampling intensity (historical median n = 96). Trends assumed exponential. CPUE represents mean catch per 15 minutes effort. Estimates based on design-based, across-episode annual means.
Estimating power to detect temporal trends in LTRM metrics

 

legendFigure 4a: Estimated power to detect temporal trends in bluegill (Lepomis macrochirus) catch-per-unit effort (CPUE) in Pool 8 in all sampled strata (backwater, main channel border, wing dam, side channel strata) under the present sampling intensity (historical median n = 96). Trends assumed exponential. The CPUE represents mean catch per 15-min effort. Estimates based on design-based, across-episode annual means.

larger scale

Figure 4a

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 28, 2020