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z
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)
z
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
z
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
z
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
z
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
z
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
z
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
z
 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.
z
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
z
Examples for man- wildlife conflicts
z
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
z
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
z
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
THANK YOU

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evs ppt (2).pptx

  • 1. z 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)
  • 2. z 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
  • 3. z 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
  • 4. z 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
  • 5. z 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
  • 6. z 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
  • 7. z 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
  • 8. z  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.
  • 9. z 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
  • 10. z Examples for man- wildlife conflicts
  • 11. z 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
  • 12. z 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
  • 13. z 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 THANK YOU