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EASWARI ENGINEERING COLLEGE
ENVIRONMENTAL SCIENCE (191CYM201T)
PRESENTED BY:
SANGEETHA.M (310622106131)
SRIVATCHAN.D (310622106155)
STEPHEN RAJ .C (310622106158)
UDHAYA KUMAR.S (310622106171)
VANATHI.S (310622106173)
VARSHA H (310622106174)
VISHAL.S (310622106182)
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THREATS TO BIODIVERSITY:
THE WASTE GENERATED DUE TO INCREASE
IN HUMAN POPULATION AND
INDUSTRIALISATION ,SPOILS THE
ENVIRONMENT AND LEADS TO MORE
DIVERSITY IN BIOLOGICAL SPECIES
BIODIVERSITY:
BIO-"LIFE"
DIVERSITY-"VARIETY"
CAUSES
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CAUSES FOR LOSS OF BIODIVERSITY:
HABITAL LOSS
1.DEFORESTATION : agricultural , or developmental project disintegrate the species
2.DESTRUCTION OF WETLANDS: draining, filling huge biodiversity loss
3.HABITAL FRAGMENTATION: habitat divided into small and scattered patches wild
animals and birds are vanishing
Habitat destruction is currently
ranked as the primary causes
of species extinction world
wide
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4.RAW MATERIAL: production of raw material(hybrid) plants gets extinct
5.PRODUCTION OF DRUGS: pharmaceutical (drugs) medicinal plants are on
the verge of extinction
6.ILLEGAL TRADE: export reduces biodiversity and habitat loss
7.DEVELOPMENTAL ACTIVITIES: construction in forest ,discharge industrial
effluents kill the birds and aquatic organisms
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POACHING OF WILDLIFE
MEANS KILLING OF ANIMALS OR
COMMERCIAL HUNTING
1.SUBSISTENCE POACHING : to provide
enough food for their survival
2.COMMERCIAL POACHING :to sell their
produts
POACHING IS NOT LIMITED TO ANIMALS ITS
ALSO FOR PLANTS TOO...
GALAX,BLACK COHOSH AND GINSENG
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Factors influencing poaching:
1.human population:led to pressure on forest resources degradation of wildlife
habitats.
2.commercial activities: through international ban, trading of wildlife products is highly
profit, so poaching encouraging the poachers to smuggle it to other countries
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EXAMPLES
MALE GORILLA: In Brazil and Zaire heads, body parts, hands
BLUE MORPHO BUTTERFLY: In Brazil attractive trays and other objects
SNOWY LARGE EQRET: In US White plumes
ELEPHANT: Killed for ash trays and ivory.
BENGAL TRIGERS: Its fur sell iis more than $1,00,000
BUSH MEAT: Important protein for west and central africa
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Wild life products : furs, horns, tasks, live specimens ,herbal products
Wealth life wildlife: developing nations in Asia ,Latin America and Africa have
richest source of biodiversity .
Importers of wild life: rich countries like Japan, Taiwan, Hong Kong are
the major importer of wildlife product.
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MAN-WILDLIFE
CONFLICTS
WHEN WILDLIFE STARTS CAUSING IMMENSE DAMAGE AND DANGER
TO MAN .
INCREASE IN MAN WILDLIFE CONFLICT IS DUE TO RESOURCE
LIMITATION LIKE *SPACE *FOOD *SHELTER
CAUSES IMPACTS OF HWC
1.agricultural expansion 1.grave injuries,loss of life
2.urbanization 2.damage to farms and crops
3.climate change 3.violence against animals
4.infrastructure development
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FACTORS INFLUENCING MAN-
ANIMAL CONFLICTS
SHRINKING OF FOREST
HUMAN ENCROACHMENT INTO THE FOREST
ELECTRIC WIRING AROUND THEIR CROP FIELDS
GARBAGE NEAR FOREST AREA
ELECTRIC WIRING AROUND THEIR CROP FIELDS
CASH COMPENSATION PAID BY GOVERNMENT IS NOT
ENOUGH
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REMEDY
STOP-ILLEGAL HUNTING AND TRADE OF ANIMALS PRODUCTS
STO-PURCHASE ITEAMS MADE OF ANIMAL
BIODIVERSITY LAWS SHOULD BE STRENGTHENEND
CROPPING PATTERN SHOULD BE CHANGED NEAR FOREST
ADEQUATE CROP AND CATTLE COMPERSATION SCHEMES
MUST BE STARTED
PROVIDE FOOD AND WATER TO WILDLIFE
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REFERENCE
ENVIRONMENTAL SCIENCE AND ENGINEERING BY
DR.A.RAVIKRISHNA ,SRI KRISHNA HITECH PUBLISHING
COMPANY
https://www.chathamhouse.org/2023/04/threats-
biodiversity
https://bio.libretexts.org/Bookshelves/Ecology/Environ
mental_Science_(Ha_and_Schleiger)/03%3A_Conse
rvation/3.02%3A_Threats_to_Biodiversity
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