What did we do last class Last class

What did we do last class? - Last class we figured out that wildebeest are a keystone species in the Serengeti Lesson 9

LESSON 10: How can we apply the rules of our model to explain population changes in other ecosystems?

Consensus Building What did we figure out last class about the role of the wildebeest in the Serengeti? How has the wildebeest population changed? How has this affected the Serengeti ecosystem?

Comparison Study Are wildebeest unique in their impact on their ecosystem? Do you know of any other keystone species?

Comparison Study You are going to pick from a list of organisms that live in ecosystems from around the world and determine their impact as a keystone species in their environment. What criteria will you need to use to determine the impact of the organism you choose?

Other Keystone Species Pisaster ochraceus, sea star, Tatoosh Island, WA Sea otters, Monterey Bay, CA Wolves, Isle Royale National Park, MI Castor canadensis, beaver, North America Parrot fish, Great Barrier Reef, Australia Prairie dogs, North America Red mangrove, various locations Snow geese, migratory

Comparison Study Use this time to research your chosen organism and evaluate the claim that it is a keystone species using the criteria we developed.

Sharing Ideas What did you figure out about your organism?

What’s Next - This lesson is the end of the bend. Lesson 11