Invasive Species Threat in the Andaman and Nicobar Islands

1. What is the main threat to the Andaman and Nicobar Islands' ecosystems?

The main threat is the introduction of invasive species from the mainland, including plants and animals like elephants, goats, bullfrogs, birds, and snails.
 

2. How do invasive species harm the islands' ecosystem?

Invasive species disrupt the delicate balance of the native flora and fauna. They can:
Outcompete native species for resources: This can lead to the decline or even extinction of native plants and animals.
Cause physical damage: Large mammals like elephants can damage vegetation through browsing and trampling.
Disrupt food webs: Invasive species can introduce new predators or diseases that harm native populations.
 

3. What specific examples of invasive species causing harm are there?

Elephants:Introduced for forestry work, they became feral and damage native vegetation like bamboo and trees.
Chital deer:Introduced species, they contribute to large-scale forest degradation by impacting factors like local temperature and moisture, affecting smaller organisms.
Invasive plants: Over 500 species have been introduced, potentially outcompeting native plants for resources.
 

4. What can be done to address this issue?

Implement stricter biosecurity measures: This can help prevent further introductions of invasive species.
Manage existing invasive populations: This may involve control or eradication efforts.
Promote research and conservation: Studying the impact of invasive species and supporting efforts to protect native biodiversity are crucial.
 

5. Why are the Andaman and Nicobar Islands particularly vulnerable?

Island ecosystems are often fragile and have unique species not found elsewhere. Introduced species often lack natural predators in these isolated environments, allowing their populations to grow unchecked.
By understanding the threat of invasive species and taking action, we can help protect the unique and irreplaceable ecosystems of the Andaman and Nicobar Islands.

SRIRAM's