Biology 20 River Study
The bio 20 class had the opportunity to investigate a number of abiotic factors that influences the health of the Red Deer River. We looked at dissolved oxygen levels, temperature, and the benthic invertebrate populations. By examining what invertebrates are found in the ecosystem we can infer the health of the ecosystem since some insect populations are pollution resistant while others are intolerant to pollution. Although there was evidence of pollution on the shore of the river where we tested the data collected suggests that the river is doing great! For the first time a group actually recovered 3 different minnows using the sample technique involving the Neil's cylinder. The cold weather on the sample day meant that hot chocolate was required upon returning to class.