Species At Risk

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Species At Risk
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Blue Walleye - 1970
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Caribbean Monk Seal - 1922
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Dodo Bird - 1681
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Dusky Seaside Sparrow 1987
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Heath Hen - 1932
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Passenger Pigeon - 1914
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Tasmanian Tiger 1920s
https//www.youtube.com/watch?v6vqCCI1ZF7o
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Amur Leopard 40 remaining
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Javan Rhino 60
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Ivory-billed Woodpecker extinct?
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Hainan Gibbon 20
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Baishan fir - 5
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Red River Giant Softshell Turtle - 4
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Vancouver Island Marmot (most endangered in N.A.)
- 75 but only 25 in the wild
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• All of the organisms you just saw are either
  extinct or critically endangered all due to
  humans
• In fact, 99 of all the species that have ever
  lived on Earth are now extinct
• 5000 years ago 1 species would go extinct about
  every 1000 years
• Between 1600 and 1900 a species would go extinct
  every 4 years
• Today a species goes extinct every 30 minutes

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• As of 1999, 27 animal and plant species had
  disappeared in Canada.
• Numerous populations were overexploited and
  decimated before hunting laws were adopted.
• Other more recent extirpations resulted from
  farming, logging, industrial pollution and other
  human activities that have destroyed essential
  habitats.

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• The disappearance (extinction) of a species is a
  biological phenomenon that has existed since the
  beginning of life on earth.
• It results from the elimination of species that
  can no longer adapt to a constantly evolving
  environment.
• However, while extinction of species in the past
  was of natural origin (for example, as a result
  of volcanic activity or falling meteorites), the
  disappearance of modern species is increasingly
  the result of human activities.

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• Most extinctions are taking place in tropical
  rainforests
• WHY?
• But Canada has this problem too

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• Since 1978, the Committee on the Status of
  Endangered Wildlife in Canada (COSEWIC) has
  studied more than 490 species, 487 of which are
  presently on the list of species at risk
• COSEWIC classifies species at risk according to
  five categories

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How Species at Risk are Classified
Classification Description Example
Extinct A species that is no longer found anywhere Blue walleye
Endangered A species that is close to extinction Eastern cougar
Extirpated Any species that no longer exists in one part of Canada, but can be found in others Paddle Fish
Threatened Any species that is likely to become endangered if it is not helped Wood Bison
Vulnerable Any species that is at risk because of low populations Grey fox
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Eastern Cougar (end)
Whooping Crane (end)
Eastern Mountain avens (end)

Pitchers Thistle (end)
Fowlers Toad (thr)
Wolverine (vul)
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Even the Sarnia area has a great deal of Species
at Risk

• Lambton county is home to some very unique
  habitat that is found nowhere else in Canada
• There are also species that are found only here,
  and nowhere else in Canada
• Pinery Provincial Park has an Oak Savannah
  ecosystem and the Sydenham River is in the
  Carolinian Life Zone

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Species at risk in Lambton county include

• The American Badger

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• Barn Owl

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• The Blue Racer

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• Peregrine Falcon

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Eastern spiny soft-shell turtle
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These species are now extirpated from Lambton
county
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What factors cause species to go extinct or
become endangered?
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• http//www.hww.ca/en/issues-and-topics/species-at-
  risk-in-canada.html
• COSEWIC Species at Risk in Canada

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