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Endangered Species Presentation
Transcript of Endangered Species Presentation
Earth's Animals at risk of extinction
An endangered species is one
at risk of going extinct because of
low population, or if a current population trend continues. There are specific classifications of all species.
As of 2012, there are 668 extinct, endangered,
threatened, and vulnerable Canadian
species. These includes species extinct
in Canada but not elsewhere.
The most critically
have populations of less than
a thousand worldwide.
Possibly the most critically
endangered species is the ivory
billed wood pecker, thought to be
extinct until one was spotted
briefly in 2005.
The rarest Canadian
Species is the Vancouver
Island marmot. Once numbering
at less than 50, there are estimated
more than 300, as of 2010 due to
intensive efforts from conservations.
Causes of Extinction
sprawl and general destruction of habitat is the biggest factor of endangering species. This population independent factor accounts for 85% of all endangered species.
Hunting is likely the second largest factor, as some species are hunted to endangerment for their fur or as food, if their population is not maintained. In a downward spiral, the rarity of these species can lead them to be poached for money.
The illegal wildlife trade is as international and large-scale as drug trade. While some animals can be legally sold for fur, food, domestication, etc., Endangered animals' value are typically increased substantially because of their rarity.
In 2011 over 23 metric tonnes of illegal ivory, at
$2 million/tonne was seized. This is equivalent to more than 2 500 elephants.
WWF's video encouraging thailand to ban ivory trade
Some species' habitats have carrying capacities that result in them being endangered species. This can be attributed to small habitats, or precise conditions a species' needs. (This is likely why an isolated habitat like New Zealand has a disproportionate amount of endangered and extinct species.) A prime example of the former is the New Zealand Kakapo. Despite It's long lifespan and resilient nature, it's population dwindles at less than 150. Closed environments experience endangerment factors much more severely
1. It means the number of the species in an area.
2. Ecosystems nearer the equator will have a greater species richness, because they get more sunlight.
3. Extinctions are sometimes not natural, they are caused by human interactions. Also, extinctions may cause ecosystem imbalance.
b)In some cases, it is necessary to do these things, but we should try to minimize the damage from our human activities.
5. The increasing human population puts more strain on the environment, and causes the rates of hunting, fishing,
deforestation and more damaging activities to rise. Also the addition of modern technology to our world increases the strain as well as humans ability to modify the landscape.
6. Special concern-polar bear
7. There are efforts by agencys such as RENEW to prevent further endangerment and extinction of at risk species.
8.a)Recycle, so that less trees are cut down.
Volunteer at a zoo or wildlife shelter which helps endangered animals.
Don't hunt endangered animals.
Create more conservation zones.
b)Recycling, because it is simple and accessible.