Lecture 22 goals

Lecture 22 goals - Lecture 13 - Exploitation - Goals 1....

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Lecture 13 - Exploitation - Goals 1. Distinguish between predators, grazers and browsers based on their feeding habits. a. Predators—animals that prey on other animals, removing them from the prey pop. Herbivores-- eat whole plants or parts of plants (can act as predators or as parasites (eat parts of plants)) b. Grazers--eat grasses; ex: cow and horse c. Browsers--eat woody vegetation; deer 2. Compare and contrast examples of reduction of food population density by consumers. Populations are controlled from below by resources and from above by consumers Consumers benefit at the expense of their resources All life forms are both consumers and the victim of consumers Similar processes also occur in plants a. One side of the fence line has more plant growth than the other b. Cactus growth area was introduced by Cactoblasts and Cactoblasts took over and consumed all the cactus b a 3. Evaluate the roles of food and predators in controlling boreal hare populations. 4.
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Lecture 22 goals - Lecture 13 - Exploitation - Goals 1....

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