Transcript 117 Vital Community Lab

Weds 4/18
*only people who need make up work during tutorial today
1. Draw 3
different food
chains for 3
different
ecosystems
Agenda:
1. Finish Notes briefly
2. Vital Community
Game
3. Food pyramids
worksheet
When any organism dies, its eventually
eaten by scavengers called:
- detrivores (like vultures, worms and
crabs)
and broken down by
-decomposers
(mostly bacteria and
fungi)
The exchange of energy
continues.
• Food Pyramids
These are called trophic levels
Energy
• In a food web or pyramid, energy is lost
– each time one organism eats another
– So there have to be more producers than
there are consumers
• A food web is another way to represent
feeding relationships.
Niche
– The role and location of an organism
• Desert scavenger
– Vulture
• Ocean top predator
http://www.youtube.com/watch?v=D1aRSeTmQE
• Community, population….
• Carrying capacity
Vital Commodity Lab
Food Web Game
• Each student will be take the role of an
– Organism in an ocean food web
• You will get a paper bag
– With a certain number of beans
– With a Role Card that explains
• What organisms you can eat
• What organisms eat you
• The food web will “mingle”
– and try to find food
• When you meet an organism that you can eat
– Get 5 beans from them and put 1 in LOSSES
• When you meet an organism that can eat you
– Give them 5 beans (they put 1 in LOSSES)
• Neither organism can eat the other
– BOTH put 2 beans in LOSSES
• Plankton only
– After EACH encounter get 10 beans from SUPPLY
– Then put 2 beans in LOSSES
• If you run out of beans
– You died, sit down :(
• If you cheat or run around
– You will have to sit down :(
Completing the Chart
• Count the number of beans you have left
– Report number to teacher when asked
• Each student needs to fill out chart