Buxa Tiger Reserve: Rebuilding a Self-Sustaining Tiger Population

Context

The translocation of a three-year-old tigress, T138, from Bihar’s Valmiki Tiger Reserve to West Bengal’s Buxa Tiger Reserve marks the beginning of a phased programme to restore a stable, breeding tiger population in Buxa. The initiative seeks to address the long absence of resident tigers while strengthening the ecological connectivity of the eastern Himalayan landscape.

Buxa Tiger Reserve, established in 1983, covers about 760.87 sq km and occupies a strategically important position between Bhutan, Assam and the Terai forests of northern West Bengal. Its location gives it potential to function as an important link between tiger populations across the wider landscape.

Restoring Tigers in a Historically Suitable Landscape

Buxa had once supported tigers, but a combination of declining prey availability, habitat changes, fragmentation and human pressures contributed to the disappearance of a resident breeding population. The National Tiger Conservation Authority (NTCA) has consequently identified Buxa, along with Dampa and Palamu, as priority landscapes requiring targeted species-recovery measures.

The reserve’s geographic setting is particularly significant. Its northern boundary connects with Bhutan’s Phibsoo Wildlife Sanctuary, while its eastern landscape links with Assam’s Kochugaon Forest Division and Manas Tiger Reserve. The Chilapata corridor provides connectivity towards Jaldapara in the west. Such linkages can facilitate natural dispersal and gene flow if habitat continuity is maintained.

Why Valmiki Was Selected as the Source Population

The choice of Valmiki Tiger Reserve as the donor landscape reflects the importance of ecological compatibility in wildlife translocation.

Valmiki forms part of the Terai Arc Landscape and contains Bhabar-Terai terrain, deciduous forests and seasonal river systems that have considerable ecological similarities with Buxa. Translocating animals from a comparable terrestrial environment can reduce the difficulties associated with adapting to a new habitat.

The Sundarbans, despite having a healthy tiger population, presents a very different ecological setting. Its tigers have evolved within a saline mangrove ecosystem characterised by tidal waterways, swimming and distinctive prey conditions. Directly shifting such animals into Buxa’s sub-montane forest environment could therefore create significant behavioural and physiological adaptation challenges.

Lessons from India’s Tiger Reintroduction Experience

India’s experience with tiger reintroduction demonstrates that moving animals is only the starting point; establishing a viable population requires suitable habitat, prey, social acceptance and sustained monitoring.

The successful recovery programmes in Sariska and Panna demonstrated the potential of scientifically planned reintroduction. At the same time, the experience of Satkosia highlighted the consequences of inadequate community engagement, livestock depredation and escalating human-tiger conflict.

Under the NTCA-led framework, reintroduction therefore requires several safeguards:

• Habitat and prey assessment: Ecological suitability and prey availability must be evaluated before release.
• Gradual acclimatisation: Soft-release facilities can allow animals to adjust before entering the wider landscape. Buxa has developed a 2.3-hectare pre-release enclosure for this purpose.
• Continuous monitoring: GPS-based radio telemetry, camera traps and field patrols are essential for tracking movement, survival and behaviour.
• Health and genetic safeguards: Animals require disease screening and assessment of genetic suitability before translocation.
• Post-release management: Monitoring must continue beyond release to detect conflict, dispersal and reproductive success.

Major Constraints to Tiger Recovery in Buxa

Weak prey availability:
Long-term canopy closure and invasive vegetation have reduced grassland availability and affected ungulate populations. Authorities have released more than 800 chital and restored around 380 hectares of grassland, but developing a sufficiently robust and sustainable prey base remains crucial.

Human presence within the landscape:
Settlements, revenue villages and tea estates around and within the reserve create pressure on tiger habitat. Relocation of villages from the core area, including the proposed movement of around 300 families, can help create larger inviolate spaces while reducing the probability of conflict.

Infrastructure fragmentation:
Railways and busy roads connecting the region with Bhutan cut across the reserve. High traffic volumes increase the risk of animal mortality and restrict wildlife movement, particularly for large mammals.

Human-wildlife conflict:
As tiger numbers increase, livestock depredation and encounters with people could become more frequent. Without timely compensation and effective conflict-response mechanisms, local support for the programme could weaken.

Way Forward

The recovery programme should move beyond individual tiger releases towards landscape-level population restoration.

First, Buxa’s ecological links with Bhutan’s Phibsoo landscape and Assam’s Manas landscape should receive coordinated protection so that dispersing tigers can move between habitats and maintain genetic connectivity.

Second, roads and railway lines passing through wildlife habitats should incorporate scientifically designed underpasses, overpasses and other wildlife-crossing measures. Traffic regulation, particularly during high-risk periods, can further reduce animal mortality.

Third, local communities should become active partners in conservation through employment in eco-tourism, habitat management and protection activities. Rapid-response teams and transparent, time-bound compensation for livestock losses can help reduce retaliatory conflict.

Finally, prey augmentation should be accompanied by systematic grassland restoration, invasive-species management and long-term ecological and genetic monitoring rather than relying solely on repeated animal releases.

Conclusion

Buxa’s tiger reintroduction programme offers an opportunity to restore a missing predator from the eastern Himalayan landscape. Its success, however, will depend not merely on the number of tigers released but on whether Buxa can provide adequate prey, secure habitat, connected corridors, scientific monitoring and sustained community support. A self-sustaining population will emerge only when these ecological and social foundations develop together.

Source : The Hindu