We’ve tried several times to take our McCurdy High School Earth Sciences class to the Rio Chama to explore the riparian ecosystem, test water quality, and survey benthic macroinvertebrates. Each time the weather has foiled our plans. Finally last Thursday we got our chance!
We began the day on the Rio Chama, where students put on waders and learned how to safely wade in the river. Students took turns using the kick nets and picking benthic macroinvertebrates off of the kick nets with tweezers. We took samples from the middle of the river and from the river bank.
On the river bank, we found mayflies, midges, leeches, snails, craneflies, and one bristle worm. In the center of the river, we found caddis larva, worms, craneflies, midge pupae, midge larva, and mayflies. The crane flies in the center of the river were much larger, and overall we found a much greater diversity of benthic macroinvertebrates. We suspect this is because the center of the river has had water through the winter, while the banks did not. The river level has risen steadily during April, as seen below in the stream gauge data.
Students also helped calibrate our water quality sensors and test river temperature, pH, turbidity, conductivity, and level of dissolved oxygen.
After all of this data collection, we headed up to Abiquiu Lake to celebrate the students’ hard work with a picnic.
Our McCurdy students have done a fantastic job this year. We’ve covered a lot of material, and the students have made great progress in their Earth Science knowledge. We hope to see some of these students in the future at Northern New Mexico College!