Please feel free to chat amongst yourselves until we begin at the top of the hour.

Seminar Agenda

IcebreakerFood Chain versus Food WebLake Michigan Food WebQuestions & Answers

Any questions?Any questions?

Ice Breaker!

What is your favorite food? 

Food Chains vs. Food Webs

Food Chains vs. Food Webs

What is a “Food Chain”?

Food Chains vs. Food Webs

What is a common Food Chain in your

area?

Food Chains vs. Food Webs

What is missing

from this “Food

Chain”?

Food Chains vs. Food Webs

Food Chains vs. Food WebsKey Concepts / Terms:Photosynthesis: the process a plant uses to combine

sunlight, water, and carbon dioxide to produce oxygen and sugar (energy)

Producer: organisms that make their own food from sunlight and/or chemical energy (the base of every food chain)

Consumer: organisms that consume the producersPrimary Consumer: eat the producer Secondary: eat the primary consumer

As the energy flows from organism to organism, energy is lost at each step.

Food Chains vs. Food WebsKey Concepts / Terms:In food chains and food webs, only about 10% of the energy expressed as calories from eating a creature get transferred

up into the next level of the food chain.

What happens to the other 90% of the calories?

Food Chains vs. Food Webs

What is a “Food Web”?

Food Chains vs. Food Webs

What are advantages to existing in a “Food Web”?

Lake Michigan Food Web

http://www.glerl.noaa.gov/pubs/brochures/foodweb/LMfoodweb.pdf

Lake Michigan Food Web

What might happen to the population of blue-green algae if the amphipods

started dying?

Lake Michigan Food Web

What would happen to the population of Lake

whitefish if the amphipods started dying?

Lake Michigan Food Web

What might happen to the mollusks if the amphipods

started dying?

Any questions?Any questions?