Lake IBI Sampling for the SLICE Lakes

1. Lake IBI Sampling for the SLICE Lakes Kimberly Strand Ecological Resources November 2008

2. SLICE Lakes • 23 of 24 • Sampled between June 10 – September 12 • 53 fish species were sampled via nearshore sampling • Ten Mile Lake • Sampled in 2006

3. Sampling Techniques • Seining • 15’ or 50’ seine, small mesh • Backpack shocking • Regular usage • One person netting, one wearing backpack

4. Sampling Difficultiesand Modifications • Shelf Rock, Silt, Cattail Mats, Large Boulders • Seine • Skip seining or use boat • Backpack • Shock from boat

5. Sampling Difficultiesand Modifications

6. Distribution of SLICE lakes in ecoregions

7. Ecoregions • Western Cornbelt Plains • IBI scores ranged from 23 to 90 • 29 fish species sampled • Sampling issues • Cattail edges, silt • Lake classes • 4 represented • 1 verified • 1 tentatively verified • 2 not verified

8. Ecoregions • Central Hardwood Forest • IBI scores ranged from 32 to 131 • 36 fish species sampled • Sampling difficulties • Cattail edges, silt • Lake Classes • 5 represented • 2 verified • 2 tentatively verified • 1 not verified

9. Ecoregions • Northern Lakes and Forest • IBI scores ranged from 70 to 136 • 36 fish species sampled • Sampling difficulties • Cattail edge, silt, large boulders • Lake Classes • 5 represented • 1 verified • 2 tentatively verified • 2 not verified

10. Ecoregions • Border Lakes • IBI scores ranged from 50 to 111** • 26 fish species sampled • Sampling difficulties • Shelf rock, silt, cattail edge, large boulders • Lake classes • 5 represented • None verified The scores for this area may be artificially high or low because the IBI protocols were not designed for this area

11. Recommendations/Goalsfor 2009 • Expand the use of the tool • Work on IBI that is appropriate for NE lakes • Formalize the derivations from the original protocols • Determine the year to year variability of IBI scores • Determine relationships between IBI scores and other SLICE data

12. Questions