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Trees of the seas and logs of the lakes

Trees of the seas and logs of the lakes. Sclerochronology group. How to core a fish. otolith thin section. Freshwater Drum. Lake Winnebago. Modern: Materials & Methods. Visually crossdated Measured in image pro plus. COFECHA series intercorrelation: 0.611 mean sensitivity: 0.199 n = 85.

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Trees of the seas and logs of the lakes

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  1. Trees of the seas and logs of the lakes Sclerochronology group

  2. How to core a fish

  3. otolith thin section

  4. Freshwater Drum Lake Winnebago

  5. Modern: Materials & Methods • Visually crossdated • Measured in image pro plus

  6. COFECHA series intercorrelation: 0.611 mean sensitivity: 0.199 n = 85

  7. Chronology development • Negative exponential detrending (ARSTAN) • 15-year spline detrending (ARSTAN) • Regional curve standardization (SAS)

  8. zebra mussels 2000s EPS > 0.85

  9. Air temperature correlations p < 0.001 (56 years)

  10. Air temperature correlations

  11. Winter SST vs. drum

  12. Archaeological Otoliths

  13. Metzig Garden 1 otolith 8500-6500 BC N Doty Island 448 Otoliths 1680-1712 Sauer Resort 9 otoliths 1390-1530 (calibrated 1317-1419)* Kargus Site 50 otoliths 1330-1390 Bell Site 2 otoliths 1222-1275 58 otoliths 1680-1730 Menominee Park I 12 otoliths 1150-1350 Fahrney Point 38 otoliths 1728-1730

  14. Crossdating

  15. COFECHA series intercorrelation: 0.587 mean sensitivity: 0.154 N = 19

  16. 34 years of site occupancy Harvest Dates N Historical Records: occupied 1680-1712 Strong year classes?

  17. RCS modern and arch samples

  18. Bivalve Sclerochronology

  19. 1 year

  20. Sample Collection Site

  21. Measurements using Image Pro

  22. Bivalve measurements and lifetimes n = 13 Shells Increment Width Year (arbitrary)

  23. Special thanks to: • John Ossi, Media Cybernetics • Jim Speer, Carolyn Copenheaver • Shelley Griffin and Climate Group for computer support • Mountain Lake Biological Station • Jeffrey Behm and Richard Mason, University of Wisconsin – Oshkosh • Ronald Bruch, Kendall Kamke, Bob Olynyk, Doug Rinzel, Ryan Koenigs, Hilary Meyers, Danielle Sippel, Seth Herbst, & Adam Sable, Wisconsin Department of Natural Resources

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