Seminar 4Food Chain/Food Web

Before we begin…

http://soldiersangelswashington.files.wordpress.com/2009/03/teamwork_puzzle_web1.jpg

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Unit 5 – Balance• Reading – Ch. 4 (heat)• Discussion – Nature

Imbalances• Seminar – Human equilibrium• Assignment – Temperature &

equilibrium virtual lab

Seminar Background•Food Chain•Food Web

Seminar Topics•Examples of food chains.•Food chain or a food web? Better to live as part of a food web than on a food chain?

•Lake Michigan food web, population of blue-green algae if the amphipods started dying?

Seminar Topics – Con’t•Population of Lake whitefish if the amphipods started dying?

•Mollusks if the amphipods started dying?

•Other 90% of the calories (energy)?

Energy Pyramid

http://www.vtaide.com/png/foodchains.htm

Food Chain Example

http://nzdl.sadl.uleth.ca/gsdl/collect/envl/archives/HASH0192.dir/p023.gif

Whitefish Mollusks Amphipods

Trophic Levels

http://www.cod.edu/PEOPLE/FACULTY/FANCHER/TrophicPyramids.htm