Today in science we started by reviewing some vocabulary. Students brainstormed and charted ideas for the terms: trophic level, cascade, invasive species and native species. The following notes document our discussion.
Students completed their journal entries to the below questions and then continued on with Ecobeaker Lesson #3 - Big Fish, Little Fish
Lake Invaders: Exercise #2 - Go Fish Follow-up
1.
How is the Lake Invaders computer model different from the food
chain/web we have seen or drawn in the past? How are they similar?
2. Describe what happened to the lake ecosystem when the trout (top predator) was removed?
3. What do you think might happen to the populations of other species when we add pike to the lake ecosystem?
The following image is of a marine trophic level sequence. We will be discussing what happens to a specific level when an organism is removed from the overall food chain. In most instances trophic cascades occur.
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