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Published byIsabel Cook Modified over 9 years ago
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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 do they differ?
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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
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Think about this… What do grizzlies eat? What has caused the decline in their numbers in the lower US?
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Do now… Draw a graph representing grizzly populations in the lower US for the past 150 years
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Grizzly Food Preference
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Grizzly Range in 1850
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Grizzly Range in 1920
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Current Distribution: Lower 48
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A Grizzly Slide Show http://www.sierraclub.org/grizzly/slideshow/
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Now, switch gears…to humans!
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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)
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Do now… Define the word “Infanticide”
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The History of China’s Population Growth
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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
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UNFPA Stands for “United Nations Fund for Population Activities” Now known as… “United Nations Population Fund”
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Recent trends in China
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Problems with population control… Too few females! Too many males (40 million without hope of marriage) Infanticide Aging population/Few young people
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CONCLUSIONS… “The primary cause of declining grizzly populations, and China’s population issues is…”
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