CONSERVATION OF BIODIVERSITY
v The
convention on Biological Diversity held in June, 1992 stressed the need of the
conservation of Biodiversity for sustainable development and perpetuation of
human beings on earth.
v Conservation
is defined as “ the management of human use of the biosphere so that it may
yield the greatest sustainable benefit to the present generation while
maintaining its potential to meet the needs and aspirations of the future
generations”.
v The two
basic approaches to wildlife conservation in protected habitats are:
1) In- situ
conservation 2) Ex- situ conservation.
1 In- situ conservation
v It simply
means conservation of species in its natural ecosystem or even in man made
ecosystems.
v This
strategy emphasizes protection of total ecosystem through a network of
“protected area”.
v Protected
Areas: an area of land and/or sea specially dedicated to the protection and
maintenance of biological diversity and managed through legal effective means.
v There are
different categories of protected areas which are managed with different
objectives. These include; Biosphere reserves, National parks, Wild Life
Sanctuaries etc.
v At
present we have 11 major biosphere reserves, 80 National parks, 420 wildlife
sanctuaries in our country covering 4% of the geographic area.
v The JIM
CORBETT National Park was 1st national park established in India.
What is
Difference among Biosphere reserves, National parks, Wild Life Sanctuaries ?
Examples of Biosphere reserves of India:
1. Nilgiri-
5,520 sq.km
2. Nanda
Devi- 5,860.69 sq. km
3. Manas –
2837 sq. km
4. Gulf of
Mannar – 10,500 sq. km
5. Great
Nicobar – 885 sq. km
6. Panchmarhi
– 4,926.28 Sq Km Examples of some National park in India
1. Kaziranga- Assam, Gir National Park- Gujarat,
Periyar – Kerala, Sariska – Rajasthan Examples of some Wild Life Sanctuaries of
India:
1. Ghana
Bird sanctuaries
2. Hazaribagh
sanctuaries
3. Abohar
wild life sanctuaries
4. Jaldapara
wild life sanctuaries
5. Mudamalai
wild life sanctuaries
2 Ex- situ conservation
v It is
defined as “the conservation of component of biological diversity (Sample of
genetic diversity, particularly of endangered species) outside their natural
habitats”.
v It
involves maintenance and breeding of endangered plant and animal species under
partially or wholly controlled conditions. E.g. Zoos, Botanical Gardens,
Aquaria, Nurseries, DNA bank, Seed bank, Gene bank etc.
v There are
more than 1500 Botanical gardens in the world containing more than 80,000
species.
v There are
more than 800 zoos around the world with about 3,000 species of mammals, birds,
reptiles and amphibians.
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