Elk of the Northern Herd Video Worksheet

Objectives: 4.05, 5.01, 5.02, 4.03 Video takes place in ________________ park. Describe the biome of the elk. Hint: pp. 94-104 Name 3 the predators of the elk. What is the missing thread of the food chain which would help to regulate elk population. “Predation is good for the elk herd”, explain this statement. Dominant bulls (male elk) round up female elk into their harems. This is good because strong _________ will be passed to offspring.

Mating Behavior (Grizzly's are solitary animals expect during mating)

Hibration

Mother Bear with clubs who have awakened from hibernation.

Man exterminated wolves from Yellowstone

Population growth of elk without predators J – Curve (Exponential Growth)

Collards help researches track wolves

Predators help to control population growth, making a S-curve (Logistic Growth)

What other organisms benefit from reintroduction of wolves to Yellowstone?

Other herbivores of Yellowstone

Omnivores of Yellowstone

Birds and squirrels feed on pine nuts What type or symbiotic relationship does the grizzly and the bird or squirrel who eat pine nuts share?

Grizzly’s are to heavy to climb pines to get to pine nuts Black bears can climb pines to get to pine nuts which are high In essential fats to help them Get through the winter months.

Carnivores of Yellowstone

Population size or population density Identify biotic and abiotic factors in this environment.

Predator /Prey

Predator-Prey Relationship

Limiting Factors in an Environment

Can you identify limiting factors

Predators of Elk

Taking blood samples to check for wellness of bears

7. What is the purpose of the large anthers on the male elk. 8 7. What is the purpose of the large anthers on the male elk? 8. List one density-independent limiting factor that controls elk populations. (p. 125) 9. List 3 savengers of Yellowstone who feed on dead elk. 10. Describe the niche for the following: a. Bald eagle b. Grass c. Elk d. Grizzly bear

Behaviors Hierarchy (Alpha male dominant wolf)

Pack Animals (Social Behavior) Their survival depends on how well they work together!

Territorial Behavior (wolves often loose their kill to Grizzly Bears) Older, wiser, and very large bears have learned to let Wolves do the work for them, then they step in and claim kill.

Learned Behavior Young bears watch how adults fish and try it.