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Introduction to Population Ecology Grizzliesvs.Humans What do the two organisms have in common?What do the two organisms have in common? How do they differ?How.

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Presentation on theme: "Introduction to Population Ecology Grizzliesvs.Humans What do the two organisms have in common?What do the two organisms have in common? How do they differ?How."— Presentation transcript:

1 Introduction to Population Ecology Grizzliesvs.Humans What do the two organisms have in common?What do the two organisms have in common? How do they differ?How do they differ?

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3 Urcto actos horriblius Weigh from 300-1500 lbs. Can run up to 35 miles per hour Hind tracks are from 12-16 inches long Alaskan grizzlies can be 10 feet tall At the time of Lewis and Clark-50,00 bears in lower US. Now approx. 850 bears in lower US

4 Think about this… What do grizzlies eat? What has caused the decline in their numbers in the lower US?

5 Do now… Draw a graph representing grizzly populations in the lower US for the past 150 years

6 Grizzly Food Preference

7 Grizzly Range in 1850

8 Grizzly Range in 1920

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10 Current Distribution: Lower 48

11 A Grizzly Slide Show http://www.sierraclub.org/grizzly/slideshow/

12 Now, switch gears…to humans!

13 China Greatest Genocides of the 20th Century Turkey's Slaughter of Armenians 0.5 - 1.0 million Hitler's Holocaust 6 million Pol Pot's Killing Fields 1 - 2 million Stalin Extermination of Jews 10 million Mao's Great Leap Forward 10 - 20 million Chinese One-Child Policy 5 - 10 million (Since 1979)

14 Do now… Define the word “Infanticide”

15 The History of China’s Population Growth

16 One child-One family policy Begun in 1979 Penalties included: –fines –loss of employment – mass abortion – involuntary sterilization – Infanticide Funded indirectly by US through UNFPA

17 UNFPA Stands for “United Nations Fund for Population Activities” Now known as… “United Nations Population Fund”

18 Recent trends in China

19 Problems with population control… Too few females! Too many males (40 million without hope of marriage) Infanticide Aging population/Few young people

20 CONCLUSIONS… “The primary cause of declining grizzly populations, and China’s population issues is…”


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