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Biologists study population statuses because, while many species are considered healthy, others are overpopulated or vulnerable to extinction. Assessing the extinction risk for various species on earth can be a difficult task. The International Union for Conservation of Nature(IUCN) is the global authority in charge of assessing a species’ status and putting it on the “Red List” (Blanc 2008). This IUCN Red List uses scientific studies such as population assessments and threat assessments to properly label a species as least concern, near threatened, vulnerable, endangered, critically endangered, extinct in the wild, or extinct (NRDC 2016). Within these categories, least concern is considered the highest ranking with a healthy population and extinct is considered the lowest ranking meaning they no longer exist (Blanc 2008).


File nameDate UploadedVisibilityFile size
19 Jul 2022
273 kB



  • Advisor
    • Erin Barding, Royce Dansby-Sparks, Stephen Smith

  • Department
    • Biology

  • Date submitted

    19 July 2022

  • Qualification level
    • Honor's/Undergraduate

  • Keywords