Topic: Conservation, environmental pollution and degradation, environmental impact assessment
Q6. “Migratory birds are not merely seasonal visitors but mobile links among geographically distant ecosystems.” Explain their ecological significance and how their decline can affect ecosystem stability across regions. (10 M)
Difficulty Level: Medium
Reference: DTE
Why the question
Migratory birds highlights how biodiversity loss in one region can disrupt ecological processes across entire flyways.
Key Demand of the question
Explain the ecological significance of migratory birds as links between distant ecosystems. Show how their decline can undermine ecosystem stability across regions.
Structure of the Answer:
Introduction
Introduce bird migration as a natural process connecting breeding grounds, stopover habitats and wintering regions, supported by a relevant recent finding.
Body
- Ecological significance: Explain their role in maintaining ecological connectivity through nutrient transfer, seed dispersal, pest regulation and food-web interactions.
- Impact of their decline: Indicate how declining populations can disturb trophic balance, weaken habitat regeneration and reduce ecological resilience across interconnected regions.
Conclusion
Conclude by emphasising the need to conserve complete flyways through coordinated habitat protection across national boundaries.
