Successfully reported this slideshow.
Activate your 14 day free trial to unlock unlimited reading.
Diversity = Variety
What does “Diversity”
BIODIVERSITY or BIOLOGICAL
DIVERSITY is the variety of the
earth’s species , the genes they
contain , the ecosystem in which
they live and the ecosystem
processes such as energy flow
and nutrient cycling that sustain
all life .
Biodiversity exists on several levels:
A SPECIES is a group of
organisms capable of
interbreeding and produce
SPECIES DIVERSITY is the
number and abundance of
species present in different
communities. It mainly consists
of two components:
Species richness and Species
GENETIC DIVERSITY is the variety of
genetic material within a species or a
The Genetic Makeup of a population through
successive generations is due to :
Mutations - random changes in DNA
ECOSYSTEM DIVESITY is the variety of different
types of ecosystems such as terrestrial and aquatic
ecosystems found in an area or on the earth.
It can be describes for a specific geographical region
or a political entity such as country or state.
A region may have several ecosytems or it can have
only one ecosystem. For example: DESERTS AND
OCEANS having low ecological diversity while
MOUNTAIN AREA that has lakes, forests, grasslands
would have high ecological diversity.
Have you all ever thought WHY THIS MUCH OF
BIODIVERSITY IS ESSENTIAL?
WHY cant we all human beings live alone on
this planet earth?
Why should we care about any other species?
How our fate is connected to “DIVERSITY” ?
The most important question “who cares for
Better crop varieties
Education and Research
Balance of nature
Regulation of climate
Degradation of waste
Cleaning of air and water
Cycling of nutrients
Control of potential pest and disease causing
Detoxification of soil and sediments
Stabilization of land against erosion
Carbon sequestration and global climate change
Maintenance of Soil fertility
•With only 2.4 % of
the world’s area, India
accounts for 7–8 % of
the world’s recorded
plant and animal
• India’s ten
possess an exemplary
diversity of ecological
habitats like alpine
wetlands, coastal and
•HENCE , we can
conclude that INDIA
HAS LARGE SPECIES
AS WELL AS
HOTSPOT-A region with high biodiversity with most of spices being Endemic.
India have three Biodiversity Hotspots- East Himalayan Region, Western Ghats and
Narrow geographical area
Low breeding rate
Overexploitation of selected species
Innovation by exotic species.
Global warming and climate change
Conserving Biodiversity in protected Habitats-
In situ conservation – WILDLIFE
SANCTUARIES, NATIONAL PARKS
Ex situ conservation – ZOO, BOTANICAL
Seed Bank, Gene Bank, Pollen Bank, DNA