Understanding Global Biodiversity Hotspots

Global Biodiversity Hotspots are regions around the world that have a high concentration of endemic species (species found nowhere else) and are under significant threat of habitat loss. To be classified as a hotspot, an area must meet two strict criteria:

1. It must contain at least 1,500 species of vascular plants as endemics (meaning it has a high percentage of plant life found nowhere else on Earth).
2. It must have lost at least 70% of its primary native vegetation.

Identifying and focusing conservation efforts on these areas is crucial because they represent some of the most biologically rich, yet threatened, places on the planet. Conserving these areas can save a large number of species.

Analysing the Options: Which is NOT a Hotspot?

Let's examine each of the given options in the context of Global Biodiversity Hotspots as defined by Conservation International:

• The Eastern Ghats: While the Eastern Ghats are important for biodiversity and have many unique species, they are generally not recognized as a stand-alone Global Biodiversity Hotspot in the same category as the others listed. They are part of a larger landscape but don't meet the specific criteria to be classified as a separate global hotspot.
• The Western Ghats: The Western Ghats of India, along with Sri Lanka, form a well-recognized Global Biodiversity Hotspot. This region is known for its extremely high levels of plant and animal endemism, particularly amphibians, reptiles, and flowering plants, and faces significant threats.
• The Himalaya: The Himalaya region, covering parts of India, Nepal, Bhutan, and Myanmar, is another recognized Global Biodiversity Hotspot. It is characterized by its vast altitudinal ranges, which support diverse ecosystems and high levels of endemism, facing threats from climate change and habitat loss.
• The Nicobar Islands: The Nicobar Islands are part of the Indo-Burma Global Biodiversity Hotspot. This large hotspot encompasses a vast area and includes the Andaman and Nicobar Islands of India, known for their unique island ecosystems and species.

Based on the criteria and recognized global hotspots, the Eastern Ghats is the region among the options that is NOT classified as a Global Biodiversity Hotspot.

Comparing the Regions

Therefore, the region that is NOT one of the Global Biodiversity Hotspots among the given choices is The Eastern Ghats.

Revision Table: Indian Biodiversity Hotspots

Additional Information on Biodiversity Hotspots and Conservation

The concept of biodiversity hotspots was introduced by Norman Myers in 1988. These areas cover only about 2.5% of the Earth's land surface but are home to a vast percentage of the world's species. Protecting these hotspots is seen as a highly effective strategy for conservation because it allows limited resources to be focused on areas where they can have the biggest impact on preventing species extinction. While the Eastern Ghats are ecologically important and face conservation challenges, they do not meet the strict criteria required for classification as a global biodiversity hotspot compared to the other regions listed.