Download Producers Plants, bacteria, algae Photosynthetic Primary consumers

AP BIOLOGY
ECOLOGY
ACTIVITY #5
NAME_____________________
DATE___________HOUR_____
ECOSYSTEMS
TROPHIC LEVELS
Producers
Plants, bacteria, algae
Photosynthetic
Primary
consumers
Herbivores
Eat producers
Secondary
Consumers
Primary carnivores
Eat primary
consumers
Tertiary
Consumers
Secondary carnivores
Eat secondary
consumers
ECOLOGICAL PYRAMIDS
Pyramid of numbers
• Most = producers
• Least = top consumers
Pyramid of energy
• Most = producers
• Least = top consumers
10% of energy available at
each trophic level is
converted into new biomass
at above level
FOOD CHAIN
Cow eats corn; people eat cow
Linear
Simple
Length limited by available energy
FOOD WEBS
•
•
•
•
•
•
•
Expanded
More complex
Producers
o Major plants
o Shaded green
Primary consumers
o Animals that eat
plants
o Shaded purple
Secondary
consumers
o Animals that eat
herbivores
o Shaded yellow
Higher consumers
o More complicated
because may be
both secondary
and tertiary
o Shaded in red
Detritivores
o Fungi, bacteria
that eat the dead
o Shaded in blue