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Difficulty: EasyBiodiversity Concepts, Hotspots and Endemism

According to the criteria established by Norman Myers for identifying global biodiversity hotspots, which of the following statements are correct?

  1. The region must contain at least 1,500 species of vascular plants as endemics.Answer
  2. The region must have lost at least 70% of its original primary vegetation.Answer
  3. C
    The entire area of the region must be designated as a protected area or National Park by local government.
  4. D
    The region must harbor at least 50% of all global mammal and bird species.

Answer

The correct statements are that a region must contain at least 1,500 species of vascular plants as endemics and must have lost at least 70% of its primary native vegetation.
To qualify as a global biodiversity hotspot under Norman Myers' criteria, a region must fulfill two key requirements: it must contain at least 1,500 species of endemic vascular plants (high endemism) and must have lost at least 70% of its original primary habitat (high degree of threat).

Step-by-Step Solution

1
Recall Norman Myers' core quantitative criteria for defining a biodiversity hotspot.
The two primary criteria are species endemism (minimum 1,500 endemic vascular plants) and degree of threat (loss of at least 70% of original primary habitat).
These metrics quantitatively measure high endemic species richness combined with extreme habitat destruction.
2
Compare each provided statement against these standard criteria.
The requirements of 1,500 endemic plant species and 70% habitat loss are accurate criteria, whereas national park designation and global mammal percentage requirements are incorrect.
Administrative protection status does not dictate scientific hotspot eligibility.

Key Concept

Norman Myers Biodiversity Hotspot Qualification Criteria
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Topics

Biodiversity Concepts, Hotspots and Endemism

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