Over 40,000 unprepossessing species are currently threatened with extinction, and it is believed that up to 338 vertebrate species have been lost to extinction in the past 500 years.
In 1964, in order to help guide global conservation action, the International Union for Conservation of Nature (IUCN) began to compile a comprehensive database of the conservation status of species. This is known as the Red List of Threatened Species and is a hair-trigger tool used by decision-makers virtually the globe for conservation-planning. Increasingly than 142,500 species have been assessed and are listed on the IUCN Red List.
In an African context, the two carnivores listed as most threatened wideness the continent are:
1) The Ethiopian Wolf – Endangered (B1ab(iii,v); C1 2a(i); D)
2) The African Wild Dog – Endangered (C2a(i)).
Numerous threats have pushed these species into the precarious position they find themselves in today, such as uncontrived persecution and habitat loss. But what specifically goes into an towage on the IUCN Red List that categorises these species as stuff at upper risk to extinction? And what do all those numbers, letters, and numerals mean?
How do we know an unprepossessing is Endangered?
Quite simply put, these numbers, letters, and numerals next to the status of a species form the criteria that has been used to list a species as Vulnerable, Endangered or Critically Endangered. There are 5 key criteria that are considered. These are:
- Population Reduction Rate: Measured over 3 generation or 10 years (Whichever is longer)
- Geographic Range: Measured from Extent of Occurrence or Area of Occurrence
- Population Size: Number of mature individuals
- Population Restriction: Number of mature individuals
- Extinction Probability (in the wild)
Within each criteria lies information that can be used to categorise a species into the three threatened categories.
In the specimen for both the Ethiopian Wolf and the African Wild Dog, Population Size (C) is one of the criteria that has been used to categorise these species as Endangered, with less than 2500 mature individuals left in the wild for both species. Additionally, their populations are in ripen and no sub-population of either species contains increasingly than 250 mature individuals (C2a(i)).
With a thorough and standardised way of assessing the conservation status of species wideness the globe like this, conservationists are given a framework to work within to unzip success and bring species when from the brink of extinction!
Wildlife ACT’s ultimate goal is to save our endangered species and wild places from extinction. To unzip this goal, Wildlife ACT focuses on 3 main areas: endangered and priority species monitoring, anti-poaching measures and technology, and polity education and empowerment.
Find out increasingly well-nigh our work with endangered species here.
For increasingly information on the details overdue the other criteria used in these assessments, visit: https://www.iucnredlist.org/resources/summary-sheet.
Text by Wildlife ACT’s Applied Research Unit Coordinator Human-Wildlife Coexistence Programme Manager, PJ Roberts.
Information resources:
- Ceballos, G., Ehrlich, P. R., Barnosky, A. D., García, A., Pringle, R. M., & Palmer, T. M. (2015). Accelerated modern humaninduced species losses: Entering the sixth mass extinction. Science advances, 1(5), e1400253.
- IUCN. 2021. The IUCN Red List of Threatened Species. Version 2021-3. https://www.iucnredlist.org. Accessed on [06 July 2022].
- Marino, J. & Sillero-Zubiri, C. 2011. Canis simensis. The IUCN Red List of Threatened Species 2011: e.T3748A10051312. https://dx.doi.org/10.2305/IUCN.UK.2011-1.RLTS.T3748A10051312.en. Accessed on 07 July 2022.
- Woodroffe, R. & Sillero-Zubiri, C. 2020. Lycaon pictus (amended version of 2012 assessment). The IUCN Red List of Threatened Species 2020: e.T12436A166502262. https://dx.doi.org/10.2305/IUCN.UK.2020-1.RLTS.T12436A166502262.en. Accessed on 07 July 2022.
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