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Which of the following criteria are used to identify biodiversity hotspots?
1. Species richness
2. Presence of invasive species
3. High endemism
4. Threat perception
Select the correct answer using the code given below.
- a)1 and 2 only
- b)2 and 4 only
- c)1, 3 and 4 only
- d)1, 2, 3 and 4
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
Which of the following criteria are used to identify biodiversity hots...
Criteria used to identify biodiversity hotspots:
Species Richness
- Biodiversity hotspots are typically areas with exceptionally high levels of species richness, meaning they contain a large number of different species within a relatively small geographic area.
- The presence of a diverse range of species indicates a healthy and functioning ecosystem, making it a key criterion for identifying biodiversity hotspots.
Presence of Invasive Species
- The presence of invasive species can significantly impact native biodiversity by outcompeting native species, altering habitats, and disrupting ecosystems.
- Identifying areas with a high presence of invasive species is important in determining the conservation needs of a particular region and designating it as a biodiversity hotspot.
High Endemism
- Endemism refers to the occurrence of species that are unique to a specific geographic area and are not found anywhere else in the world.
- Areas with high levels of endemism are considered important for conservation as they represent unique evolutionary lineages and are at a higher risk of extinction.
Threat Perception
- The level of threat faced by biodiversity within a particular region is a crucial factor in identifying biodiversity hotspots.
- Threats such as habitat destruction, climate change, pollution, and overexploitation can lead to the decline of species populations and the loss of biodiversity.
Therefore, the criteria used to identify biodiversity hotspots include species richness, presence of invasive species, high endemism, and threat perception, making option 'C' (1, 3, and 4 only) the correct answer.
Species Richness
- Biodiversity hotspots are typically areas with exceptionally high levels of species richness, meaning they contain a large number of different species within a relatively small geographic area.
- The presence of a diverse range of species indicates a healthy and functioning ecosystem, making it a key criterion for identifying biodiversity hotspots.
Presence of Invasive Species
- The presence of invasive species can significantly impact native biodiversity by outcompeting native species, altering habitats, and disrupting ecosystems.
- Identifying areas with a high presence of invasive species is important in determining the conservation needs of a particular region and designating it as a biodiversity hotspot.
High Endemism
- Endemism refers to the occurrence of species that are unique to a specific geographic area and are not found anywhere else in the world.
- Areas with high levels of endemism are considered important for conservation as they represent unique evolutionary lineages and are at a higher risk of extinction.
Threat Perception
- The level of threat faced by biodiversity within a particular region is a crucial factor in identifying biodiversity hotspots.
- Threats such as habitat destruction, climate change, pollution, and overexploitation can lead to the decline of species populations and the loss of biodiversity.
Therefore, the criteria used to identify biodiversity hotspots include species richness, presence of invasive species, high endemism, and threat perception, making option 'C' (1, 3, and 4 only) the correct answer.
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Community Answer
Which of the following criteria are used to identify biodiversity hots...
- Conservation International was a pioneer in defining and promoting the concept of hotspots. In 1989, just one year after scientist Norman Myers wrote the paper that introduced the hotspots concept, Conservation International adopted the idea of protecting them as the guiding principle of their investments. Hot spots are regions with very high levels of species richness and a high degree of endemism (that is, species confined to that region and not found anywhere else) that are under constant threat.
- To qualify as a biodiversity hotspot, a region must meet two strict criteria:
- It must have at least 1,500 vascular plants as endemics — which is to say, it must have a high percentage of plant life found nowhere else on the planet. A hotspot, in other words, is irreplaceable.
- It must have 30% or less of its original natural vegetation. In other words, it must be threatened.
- The mere presence of invasive species is not a criteria to identify biodiversity hotspots. Hence option (c) is the correct answer.
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Which of the following criteria are used to identify biodiversity hotspots?1. Species richness2. Presence of invasive species3. High endemism4. Threat perceptionSelect the correct answer using the code given below.a)1 and 2 onlyb)2 and 4 onlyc)1, 3 and 4 onlyd)1, 2, 3 and 4Correct answer is option 'C'. Can you explain this answer?
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