Pyramids

1. PRESENTED BY-
K.MANIKANTH

2.  These are defined as the representation
pathway of energy through an ecosystem.
 These are also known as food pyriamds.
 Ecologists use three basic type of pryraimds.

3. TYPES OF
PYRIAMDS
PYRAMIDS
OF NUMBER
PYRAMIDS
OF
BIOMASS
PYRAMIDS
OF ENERGY

4.  Shows the number of organisms at each trophic
level in a community.
 Large population fill large spaces on the pyramids.
 Usually these pyramids have more producers than
consumers, but inverted pyramids are used with
decomposers, parasites and some insects.

5. 1 HAWK
10 SONG BIRDS
75 INSECTS
100 PLANTS

6.  Shows the quantites estimate of the total mass or
amount of living material.
 Usually represented in the volume or a weight.
 Usually show progressive reduction in biomass as
you travel up a pyramid.
 On an average there is a 90% reduction of biomas
at each level on the pyramids.

7. 0.3 g HAWK
3g SONG BIRDS
30g INSECTS
300g PLANTS

8.  Shows the energy content( in kilocalories) per
square meter per year of the biomass of each
trophic level.
 These also have large bases and progressively get
smaller.
 Shows how energy is lost to the environment as
heat. The 10% rule states only 10% of usable
energy is passed to the next organism(of next
tropic level).

9. 1
HAWK(363.8
Kcal/m/yr)
10 SONG
BIRD(3638
Kcal/m/yr)
75 INSECTS(36380 Kcal/m/yr)
100 PLANTS(363800 Kcal/m/yr)

11.  RESEARCH AND DEVELOPMENT
 Environmental study has a very good scope in field of
research and development.As new technology is being
introduced day by day.
 NATURAL RESOURCE MANGEMENT
 Here, we can employe people in the forest management
department.

12. NATURAL RESOURCE CONSERVATION AND
ENVIRONMENTAL POLLUTION CONTROL
 Now a days new NGOs are getting open ,which are
formed with the main moto of saving natural resources.
PROPER WASTE MANAGEMENT
Government is employing educated people so that they can
make plans about how the can be dispose.