assignment - Conservation Biology: Human-Caused Threats to...

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Conservation Biology: Human-Caused Threats to Biodiversity " Humankind has not woven the web of life. We are but one thread within it. Whatever we do to the web, we do to ourselves. All things are bound together. All things connect." Attributed to Chief Seattle
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Human-caused extinctions are happening at an alarming rate SF Chronicle Dec 15, 2006 Attempts to find a living Chinese River Dolphin (Baniji) have failed Inhabited the Yangtze River, adapted to murky water. Habitat fouled from sewage; propellers of ships disrupted dolphin’s sonar New sighting claimed in Fall 2007 Qi Qi, the last River Dolphin in captivity, died in 2002 at the age of 25.
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Loss of Tropical Rainforests Threatens Biodiversity and Ecosystem Processes
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Why are Rainforests important? • Home to over 50% of plant and animal species • A single rainforest reserve in Peru has more species of birds than the entire United States. • “The lungs of the planet” Help stabilize the world's climate • Protect against flood, drought, and erosion • Source for medicines and foods. • 25% of current pharmaceuticals are from the rainforest. • 80% of the developing world’s diet originated in the rainforest • Support traditional human cultures • Magical places
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Rain Forest Losses • 30% of the world’s tropical forests are in Brazil • Road Building has allowed access to new areas • Satellite-based monitoring reveals that forest losses are even greater than previously thought
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• Also a biodiversity hotspot
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assignment - Conservation Biology: Human-Caused Threats to...

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