Ecosystems: Trophic Cascade Effects

Ecosystems

Oct 2

Written By Gachuzee

HW: Work on Ecosystem Vocabulary Video Project. (No repeat examples.)
CW: Completed Trophic Cascade - Wolves & Sea Otters worksheet.
DN: What is a tertiary consumer?
Reminders: [1] Tomorrow is the last day to sign up to work in pairs. Group Project is Due TUESDAY (10/8). [2] Late Wheel Projects are due Friday.

5min> Students complete the Do Now by answering questions.

5min< Watch How Wolves Change Rivers video.

5min Mark worksheet indicating which species increased or decreased in population.

5min Teacher demonstrates how to draw food webs based on population (bigger letters for bigger numbers).

5min Students draw new food web that includes wolves.

10min Students explain the changes to the wolves population and add a new line that shows changes to the deer populations during the same time.

5min Watch Army of Sea Urchins & Forest Guardians videos.

5min Complete drawings before (w/o otters) and after (w/ otters).

5min Collect materials. Clean up. Wrap up.

Gachuzee

Ecosystems: Imaginary Food Web