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Teaching Notes for Changes in Lake Ice: Ecosystem Response to Global Change

Author(s): Rachel Arnold

Northwest Indian College

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This is an FMN participant modification of the TIEE module "Changes in Lake Ice: Ecosystem Responses to Global Change," authored by Robert Bohanan, Marianne Krasny, and Adam Welman in 2005.

Licensed under CC Attribution-ShareAlike 4.0 International according to these terms

Version 1.0 - published on 10 Jul 2017 doi:10.25334/Q4537K - cite this

Adapted from: Changes in Lake Ice: Ecosystem Response to Global Change v 1.0


The module was implemented at Northwest Indian College by Dr. Rachel J. Arnold. 

  • Course: ENVS 430 - Aquatic Ecology
  • Course Level:Senior majors in Native Environmental Science
  • Instructional Setting: Lab & Lecture
  • Implementation Timeframe: 1 lab period (3 hours)


I used the handout that gave the students an overview of the lakes and the data that was being collected on them.  However, next year I will modify this into a PowerPoint so we can have more visuals and a classroom discussion as we move through the study.

I only had two students, so they did not work in groups, but instead handled 20 years of data on their own in addition to plotting the overall graph.  The students were well-versed with Excel so this was easily accomplished.

We discussed what the snowpack data might tell us if we had long-term data.  I will be incorporating a local example into the class next year, and may still this year if I find a good dataset!  I will also be incorporating a cultural component to the module next year by talking about the Native Americans that lived in the area and the tribes that are still there.

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