1.3 food webs
DESCRIPTION
1.3 Food Webs. Goals. 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 . Consumers must compete for food sources. Populations of species can change over time. - PowerPoint PPT PresentationTRANSCRIPT
1.3 Food Webs
Goals
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.
Consumers must compete for food sources.Populations of species can change over
time.
How it really is
Animals must work to get energy from food.Sometimes prey may have different types of
predators.The predators must compete to get that
food.At the same time, those animals may have
multiple predators.These linking food chains are called food
webs.
Examples
Examples
Examples
Examples
Worst case scenarios
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.
Let’s discuss the cane toad.
Australia’s sugar cane
Sugarcane toad
Eating habits
Greyback cane beetle