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