Markdown on Endangered Species

Endangered Species

Here in this Rmarkdown, we will be looking at endangered species. According to National Geographics, an endangered species “is a type of organism that is threatened by extinction.” If you were wondering what parameters consitutes an animal to be quaified as endangered vs threatened, I have posted a nice table from National Geographics that explains these details:

If we look at the data, we can see that the population sizes for the vulnerable to the extinct vary. If we consider the *optimum results given, we can get these kind of graphs:

(*Where optimum would mean the least amount of population decline, and the greatest number of mature species with the highest amount of area occupation)

Status	Declining Rate	Geographic Range	Population Size	Probability
Vulnerable	30	20000	10000	10
Endangered	50	5000	2500	20
Critically	80	100	250	50
Extinct	0	0	0	100

In this previous graph there is evidence that endangered species lose their population as they grow extinct (i.e. the basic evidence for extinction is the loss of its members)

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Further more, endangered species can occur because of a magnitude of reasons. Here are the 3 reasons according to Jennifer Bove from ThoughtCo in this article on endangered species:

• Habitat Destruction and Pollution
• Introduction of Non-Native Species to an Enviornment
• Illegal Hunting

Human Growth of Population

Since these factors includes human interaction, we should compare the population of humans by country and how this has changed over time. Here is a plot representing this information :

As we can see, there has been a growth of humans and that keeps increasing over time.

Nevertheless, here is data on people before the 1800s:

Including Maps

If we compare these values with data from 2009 about endangered species for every country in the world, we can see that there have been an unfortuante amount of species that have dwindled in population size.

Here is the map

References

Choppin, Simon. “Red List 2009: Endangered Species for Every Country in the World.” The Guardian, Guardian News and Media, 2 Sept. 2009, www.theguardian.com/environment/datablog/2009/oct/23/endangered-species-red-list-data-review.

National Geographic Society. “Endangered Species.” National Geographic Society, National Geographic , 9 Oct. 2012, www.nationalgeographic.org/encyclopedia/endangered-species/.