DNA-Based Elephant Census

The Synchronous All India Elephant Estimation (SAIEE) 2021–25 report was recently released by the Ministry of Environment, Forest and Climate Change (MoEFCC).

Background

  • The latest estimate places India’s wild Asian elephant population at 22,446, down from 27,312 in 2017 — a 17.8% decline.
  • The Ministry clarified this is a “new scientific baseline”, not a direct comparison, due to changes in methodology.
  • The Western Ghats and Northeast remain key habitats, especially in Karnataka, Kerala, and Assam.
  • However, regions like Jharkhand (–68%) and Odisha (–54%) have seen sharp population declines.

Key Concerns

  • Decline indicates ongoing threats to elephant corridors and habitats caused by deforestation, mining, and human encroachment.
  • Fragmented landscapes continue to disrupt elephant migration routes, increasing human–elephant conflict.

New Methodology: DNA-Based Census

  • The SAIEE 2021–25 marks a major scientific advancement in wildlife monitoring.
  • It uses genetic mark–recapture techniques, similar to the tiger census model.
  • Instead of traditional direct counts or dung-decay studies, it relies on:
    • Spatially designed sampling grids, and
    • DNA analysis of dung samples to identify individual elephants.
  • This provides greater accuracy, minimizes duplication, and helps in long-term population tracking.

Significance

  • Creates a more reliable and scientific baseline for future monitoring.
  • Enables better conservation planning and policy correction based on real data.
  • Helps in mapping habitat use and migration patterns, crucial for sustainable coexistence strategies.

Way Forward

  • Strengthen habitat connectivity through protected corridors.
  • Increase community participation in conflict management.
  • Use scientific data for adaptive conservation policies ensuring long-term elephant survival.

This topic is available in detail on our main website.

👉 Read Daily Current Affairs – 21 st October 2025

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