1. 1.3 Food Webs

2. Goals Recognize that consumers eat a variety of food sources for energy, many overlapping with other other consumers. Recognize that consumers eat a variety of food sources for energy, many overlapping with other other consumers. This linking together of food chains are called food webs. This linking together of food chains are called food webs. Consumers must compete for food sources. Consumers must compete for food sources. Populations of species can change over time. Populations of species can change over time.

3. How it really is Animals must work to get energy from food. Animals must work to get energy from food. Sometimes prey may have different types of predators. Sometimes prey may have different types of predators. The predators must compete to get that food. The predators must compete to get that food. At the same time, those animals may have multiple predators. At the same time, those animals may have multiple predators. These linking food chains are called food webs. These linking food chains are called food webs.

4. Examples

5. Examples

6. Examples

7. Examples

8. Worst case scenarios Food webs can change drastically if specific organisms are increased, decreased, or removed. Food webs can change drastically if specific organisms are increased, decreased, or removed. Organisms could be affected by diseases, natural disasters, human disasters, human involvement, and other reasons. Organisms could be affected by diseases, natural disasters, human disasters, human involvement, and other reasons. Let’s discuss the cane toad. Let’s discuss the cane toad.

9. Australia’s sugar cane

10. Sugarcane toad

11. Eating habits

12. Greyback cane beetle