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EXTINCTIONS-WHY SHOULD ‘WE’ BE WORRIED!

-SHAILESH KUMAR GANGWAR-OMEGA-380

01/05/2023

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WHAT DO WE KNOW OF EXTINCTION?WHAT HAPPENED...• Ordovician-Silurian Extinction: -439 million years ago -75% of all species dead• Devonian Extinction: -364 million year ago -50% to 70% species dead• Permian-Triassic Extinction: -251 million years ago -95% of all species dead• End Triassic Extinction: -199 to 214 million years ago -70% of all species dead• Cretaceous-Tertiary Extinction: -65 million years ago -70% of all species dead

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WHAT IS HAPPENING.....• Last 40 years

• 99% at risk

• Sixth mass extinction

• Reasons for this

Known causes of animal extinction since 1600

Species In-troduction 39%Habitat Distruc-tion 36%

Others 2%

Hunting 23%

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• Natural rate of extinction• Unnatural rate of extinction• 10 to 25 species every year

Rate of extinction

Lets talk about few “Big Ones”...

1800183018601890192019501980201020400

10000

20000

30000

40000

50000

60000

Extin

ctio

ns

Date

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SHARKS AND WHALES• 400 million year old

• 90% gone

• 250000 everyday (70 million pa)

• Killing for food

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MANTA RAYS• As old as sharks

• Low growth rate

• Killed for gills

• Hong Kong the “Wal-Mart”

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• Believed that gills have medicinal properties01/05/2023

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NORTHEN WHITE RHINO• One of the biggest

• 5 left (one male)

• “Sudan”

• THEY WILL EXTINCT

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PHYTO PLANKTONS• Microscopic and beautiful

• Half of the Oxygen

• 40% gone

• “The Chain”

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WHO WILL DISAPPEAR BY THE END OF 2016• Black Rhino less than 2500• Mountain Gorilla

less than 880• Amur Leopard

70 left• South China Tiger

“0” in wild

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IS IT INEVITABLE?

WHAT CAN BE DONE?

WILL WE DO IT?

HOW WILL WE FACE THEM?

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THANK YOU!