Dr. Kavanaugh reviewed the river continuum concept and talked to the students about habit, biological indicators, and what they mean for the health of the river. Each student took turns holding the shocker and rotated between holding the live well and scooping up with the stunned fish with axillary nets. The diversity of fish species we found and their intolerance of pollution indicated a vibrant and healthy river.
The results from macro-invertebrate sampling painted a similar picture. Students divided into groups of two and used D-frame nets to collect as many species as possible. The cool, clear water passing quickly over a small ripple provided a great habitat for macros; many of which are pollution intolerant.
After eating lunch on the island, the group continued paddling down to the convergence of the Mad and Great Miami and took out at RiverScape (after playing in the fountains of course). The paddle provided an opportunity for students to see Dayton in a whole new light preparing them to begin learning about river cities the next week.