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Performance Task #3

Performance Task #3. PART I. Classroom Activity (20 min.). wct = westslope cutthroat trout bt = bull trout mwf = mountain whitefish np = northern pikeminnow pc = peamouth chub s = suckers ( longnose and largescale ) lt = lake trout lwf = lake whitefish

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Performance Task #3

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  1. Performance Task #3 PART I. Classroom Activity (20 min.)

  2. wct = westslope cutthroat trout bt = bull trout mwf = mountain whitefish np = northern pikeminnow pc = peamouth chub s = suckers (longnose and largescale) lt = lake trout lwf = lake whitefish kok = kokanee salmon yp = yellow perch m = Mysis shrimp r = rotifers cl = cladocerans co = copepods

  3. Ellis et al., 2011

  4. Ellis et al., 2011

  5. How should lake trout be managed? ---------------------------------------- • Reduce numbers? • Hands-off approach (let nature take its course)?

  6. Reference • Bonnie K. Ellis, Jack A. Stanford, Daniel Goodman, Craig P. Stafford, Daniel L. Gustafson,David A. Beauchamp, Dale W. Chess, James A. Craft, Mark A. Deleray, and Barry S. Hansen. (2011). Long-term effects of a trophic cascade in a large lake ecosystem. Proceedings of the National Academy of Sciences,108 (3) 1070-1075; published ahead of print January 3, 2011,doi:10.1073/pnas.1013006108.

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