1. A comparison of fish quality in three different lakes By: Jorge Barbosa, Andrea Martin, Amanda Saralegui, and Chris “got his butt kicked by Andrea” Whitman

2. What we wanted to know… Does the presence of exotics result in an overall lower quality in the native fish Does the presence of exotics result in an overall lower quality in the native fish Hypothesis: The condition of the native fish will be relatively poor in the presence of introduced exotic species. Hypothesis: The condition of the native fish will be relatively poor in the presence of introduced exotic species.

3. Methods Trap Nets Trap Nets Minnow Traps Minnow Traps Seine Nets Seine Nets Really AWFUL gill nets Really AWFUL gill nets Eckman grab Eckman grab Plankton Nets Plankton Nets Multiprobe Multiprobe Secci Disk Secci Disk LOTS of Time LOTS of Time

9. t-Test: Two-Sample Assuming Unequal Variances cranberrycatlin Variable 1Variable 2 Mean10.248769.202674 Variance26.1092328.29012 Observations14957 Hypothesized Mean Difference0 df98 t Stat1.276518 P(T<=t) one-tail0.102395 t Critical one-tail1.660551 P(T<=t) two-tail0.204789 t Critical two-tail1.984467

15. t-Test: Two-Sample Assuming Unequal Variances CatlinWolf Variable 1Variable 2 Mean9.20267419.96216 Variance28.29012115.924 Observations57385 Hypothesized Mean Difference0 df137 t Stat-12.0489 P(T<=t) one-tail1.51E-23 t Critical one-tail1.656053 P(T<=t) two-tail3.01E-23 t Critical two-tail1.977432

18. Overall Results Competition with Exotic Species is not the only factor that causes a poor quality in native fish Competition with Exotic Species is not the only factor that causes a poor quality in native fish Other factors may include predation of small fish, poor quality of food, availability of food, spatial limitations, and human factors Other factors may include predation of small fish, poor quality of food, availability of food, spatial limitations, and human factors We hate Wolf Lake We hate Wolf Lake