Download Ecological Pyramids Foldable

Ecological Pyramids Foldable
1. Follow my instructions to construct your foldable.
2. Lay your foldable out flat so that you can see all four
quadrants. Choose three (3) quadrants to work with and
leave the fourth quadrant blank.
3. Visit the “Food Web Resources” link on the webpage and as
a group, choose one (1) food web with which to work.
4. Complete the activity by correctly placing the organism into
its correct trophic level.
!
-Make a note of the type and number of trophic levels
!
that are present in the food web that you have chosen.
5. When you’re finished, be sure to view the completed food
web.
Ecological Pyramids Foldable
6. Use the three flaps of your foldable to draw a pyramid
of numbers, a pyramid of biomass, and a pyramid of energy
for your chosen food web.
!
-You may estimate the amount of biomass and
!
number of organisms in each trophic level but your
!
pyramid MUST have the correct number of trophic
!
levels and should accurately represent the food web
!
with which you worked!
!
!
-The pyramid of energy should demonstrate your
understanding of the 10% rule.
7. When you are finished, fold the blank flap of your foldable
underneath the other three flaps and glue the flaps together
to finish your ecological pyramids foldable!
Ecological Pyramids
Energy Pyramid
Shows the relative amount of
energy available at each trophic
level. Organisms use about 10
percent of this
energy for
life processes.
The rest is lost
as heat.
Biomass Pyramid
Represents the amount of
living organic matter at each
trophic level. Typically, the
greatest biomass is at the
base of the pyramid.
Pyramid of Numbers
Shows the relative
number of individual
organisms at each
trophic level.