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Protecting Biodiversity: At-Risk Species in Canadian Ecosystems

In Canada, over 250 plant and animal species are categorized as "at risk," including extinct, endangered, extirpated, threatened, and vulnerable species. Factors contributing to extinction include habitat loss, pollution, disasters, climate change, and human activities. The loss of biodiversity and collapse of food chains are consequences of extinction. Humans are the primary cause of species endangerment. Mass extinction poses a threat to global biodiversity. Scientists aim to use DNA technology to protect and potentially resurrect endangered species. Watch more on this topic: http://www.youtube.com/watch?v=68QhIQLeVUA&feature=related&safety_mode=true&persist_safety_mode=1&safe=active

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Protecting Biodiversity: At-Risk Species in Canadian Ecosystems

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  1. Diversity in Ecosystems Slide Show4

  2. In Canada, 250 species of plants and animals are “at risk”. • By “at risk” we mean categorized as; • Extinct, (species not found anywhere) • Endangered, (close to extinction) • Extirpated, (No longer exist in one part, but can be found in another) • Threatened, (Likely to become endangered if nothing is done) • Vulnerable. (any species at risk because of low or declining numbers)

  3. Extinct, (species not found anywhere) • Dinosaurs, Great Auk, Wooly Mammoth

  4. Endangered, (close to extinction) • Panda, Orangatang

  5. Extirpated, (No longer exist in one part, but can be found in another) • The Newfoundland Wolf

  6. Threatened, (Likely to become endangered if nothing is done) • Newfoundland Woodland Caribou

  7. Vulnerable. (any species at risk because of low or declining numbers) • Polar Bear

  8. Causes of Extinction: • Loss of Habitat • Pollutionof air and water • Large-scale disaster (natural environmental change) • Climate changes • Competition from other species • The single largest factor that cause species to be At-Risk is humans!!!!!

  9. Effects of Extinction: • Loss of Biodiversity • Collapse of food chains Endangered Species: A species that is close to extinction in a large area.

  10. Humans, a recent addition to the planet, have had a profound effect on other organisms. • In the early years of the 21st century, it is estimated that one species will become extinct every 30 minutes. • The majority of threatened species can be found in tropical rainforests.

  11. Nearly 500 million different species have inhabited the planet. Of these, more than 90% have become extinct or have evolved into new species. • Mass Extinctionis the destroying of large numbers of species due to large scale disaster 

  12. For your discussion: • Scientists believe they can sustain endangered species - maybe even one day resurrect some that have died out - using DNA technology • http://www.youtube.com/watch?v=68QhIQLeVUA&feature=related&safety_mode=true&persist_safety_mode=1&safe=active

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