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Stack #4549669
| Question | Answer |
|---|---|
| How did the islands form in Lake Guri? | A man made hydroelectric dam that flooded the valley and the islands are old mountaintops. |
| What type of ecosystem existed before the formation of Lake Guri? | A tropical rainforest. |
| How did the loss of top predators affect the ecosystems on this islands? | Prey population exploded and overgrazed the food supply. They stopped grooming, being playful, and Howler monkeys stopped howling. Leaf cutter ants also exploded and died off. |
| Is the ecosystem more or less diverse than the original ecosystem? | Less |
| The process of breaking up one whole ecosystem into many small parts is known as what? | Fragmentation |
| What was the first National Park in the U.S. | Yellowstone. |
| What has been happening to the Lamar river at Yellowstone? | Stream banks eroding because of the lack of stream side buffers. Shallow but wider. Water temp gos up and less oxygen |
| What has happened to the Willows and Aspens of Yellowstone | Gone as they were being eaten by the Elk |
| What caused the decline of the aspen in Yellowstone National Park? When did this begin to occur? | The elk ate the Aspens this began in 1930 when the last wolf was shot |
| How has the reintroduction of the wolves into Yellowstone affected the Yellowstone ecosystem,? | 1. Formed packs and started killing the elk 2. Willows and Aspens started to regrow 3. Stream bank erosion slowed down and stopped getting wider 4. Trees gave shade to the river lowering the temp and oxygen levels went up |
| Where did the reintroduced wolves of Yellowstone come from? | Canada |
| What is a keystone species? | A species that affects many other species |
| wolves are a what? | Keystone species |
| What effect do wolves have on the ecosystems of Yellowstone? Outside of Yellowstone? | Restored balance of the ecosystem by killing the elk. Eating livestock outside the park. |
| what is causing the coral reefs around Jamaica to die/ What has allowed this to happen? | Overfished big fish Overfished small fish Algae took over Coral reefs die |
| what % of large fish have disappeared | 90% |
| How are the island nations of the Caribbean trying to bring back fish and coral? | establish marine reserves where people can’t fish to bring back marine life. |
Created by:
Carterar