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Eroding productivity of walleye populations in northern Wisconsin lakes

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Andrew L. Rypel, Daisuke Goto, Greg G. Sass, and M. Jake Vander Zanden, Eroding productivity of walleye populations in northern Wisconsin lakes: Canadian Journal of Fisheries and Aquatic Sciences.

Summary

Abstract (from Canadian Science Publishing): Managing fisheries through rapid environmental change requires diverse approaches for identifying and adapting to novel ecological conditions. For the Wisconsin Ceded Territory, we calculated 473 adult walleye (Sander vitreus) production (P), biomass (B), and P/B estimates for 1990–2012. Frequency distributions for production statistics were right-skewed, indicating the fishery is generally dominated by low production populations. Mean P, B, and P/B were significantly elevated in natural recruitment (NR) lakes compared with combination (NR + stocking) and stocked-only lakes. Furthermore, combination populations had significantly higher production compared with stocked-only lakes. In NR lakes, [...]

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  • National CASC
  • National and Regional Climate Adaptation Science Centers

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Wildlife and Plants
Water, Coasts and Ice
Science Tools For Managers
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journalCanadian Journal of Fisheries and Aquatic Sciences
parts
typedoi
value10.1139/cjfas-2017-0311
typeVolume
value75
typeIssue
value12
typePages
value2291-2301

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