1. Food Webs in the Backyard and Beyond

2. What is the difference between a population, community, and ecosystem?
Population: a bunch of the same species living in the same area
Example?
Community: a bunch of populations living in the same area
Ecosystem: a community plus abiotic (non-living) factors

3. Today you’re going to describe the community in your backyard
Go outside….
Look, listen, and write down all the living organisms you can find.

4. How could we organize species in a food web?
By feeding relationships: Producer: an organism, such as a plant, that converts light energy to chemical energy. Consumer: organisms that obtain energy by consuming other organisms. Decomposer: a consumer that gets its energy from the remains and waste products of organisms.

5. Keystone Species

6. Keystone Species