Kerala – A scientific survey of 45 sacred groves in the Western Ghats has documented an unusually high concentration of plant diversity, including dozens of species listed as threatened on the International Union for Conservation of Nature (IUCN) Red List. The research, released by the Centre for Ecological Sciences at the Indian Institute of Science, argues that these culturally protected forest patches outperform nearby public forests in canopy cover, species richness and resistance to human disturbance. The findings arrive as Kerala’s forest officials consider extending statutory protection to the groves, a move that could reshape the state’s conservation framework and challenge conventional reliance on formal reserves alone.
What happened
The study combined on‑ground botanical inventories with satellite‑derived remote‑sensing data to compare ecological conditions inside sacred groves with those of adjacent, non‑protected forest fragments. Researchers recorded a total of 1,245 plant species across the surveyed sites, of which 87 are classified as threatened under the IUCN Red List. Canopy cover—a key indicator of forest health—averaged 78 percent within the groves, compared with 62 percent in the neighboring public forests. Signs of logging, livestock grazing and invasive plant species were markedly lower inside the sacred sites, suggesting that traditional religious taboos continue to limit anthropogenic pressure.
Lead author Dr. Anitha Menon highlighted the significance of the data: “Our results show that sacred groves harbor a higher proportion of endemic and rare species than comparable forest patches that lack cultural protection. This demonstrates that community‑based stewardship can deliver measurable biodiversity outcomes.” The paper notes that many of the groves are documented in local temple records but lack formal legal status, leaving them exposed to land‑use changes such as plantation expansion and infrastructure development.
Why it matters
Kerala’s Western Ghats region is recognized as a global biodiversity hotspot, yet it faces intense pressure from agriculture, tourism and commercial forestry. The state’s official forest‑reserve network covers roughly 10 percent of its land area, while sacred groves—often only a few hectares each—dot the landscape in virtually every village. By quantifying the ecological value of these micro‑habitats, the study provides a data‑driven basis for policy reforms that could integrate traditional conservation practices into the formal sector.
State Forest Department spokesperson R. Kumar welcomed the research, stating that the department is reviewing policies to grant statutory protection to sacred groves. “If we can legally recognize the ecological services these sites provide, we can strengthen our overall climate‑resilience strategy and reduce the burden on larger, more fragmented reserves,” Kumar said. Conservation NGOs have echoed this sentiment. Priya Nair, director of Green Kerala, called the study “robust scientific evidence” that community stewardship can complement state‑led initiatives, but warned that without legal safeguards rapid development could erode these micro‑habitats and undermine broader environmental goals.
Background and context
Sacred groves—known locally as “kavu” or “kaavu”—have been protected for centuries under Hindu, Muslim and tribal customs that deem certain forest patches inviolable. Historically, these sites have served religious functions, such as venues for rituals, festivals and offerings, while simultaneously preserving pockets of native flora and fauna. Prior research has suggested that such culturally protected areas can act as refugia for species displaced by land‑use change, but systematic, quantitative assessments have been limited.
The Centre for Ecological Sciences’ investigation builds on earlier anecdotal reports by expanding the sample size to 45 groves and employing standardized biodiversity metrics. By pairing field inventories with remote‑sensing analyses, the researchers were able to control for variables such as elevation, rainfall and soil type, strengthening the case that cultural protection, rather than geographic coincidence, underpins the observed ecological benefits.
Competing claims and uncertainty
While the study’s authors present a compelling correlation between sacred status and ecological health, some experts caution against overgeneralizing the results. Dr. Ravi Chandran, a forest policy analyst not involved in the research, notes that the sample may be biased toward groves that are already relatively intact, as heavily degraded sites are less likely to be identified by local custodians. “If we only study the best‑preserved groves, we might miss a broader picture of how widespread the protective effect truly is,” Chandran said.
Another point of contention concerns the legal pathway for protection. Kerala’s land‑revenue records often list sacred groves as “private” or “community” land, complicating the process of integrating them into the state’s forest‑reserve system, which is governed by the Indian Forest Act of 1927. Critics argue that granting statutory status could create conflicts over land rights, especially where groves overlap with agricultural plots or are claimed for development projects.
The study also acknowledges data gaps in long‑term monitoring. While the current snapshot captures species richness and canopy cover, trends over time—such as changes in population dynamics of threatened species—remain untracked. Without a systematic monitoring framework, it will be difficult to assess whether legal protection translates into sustained ecological outcomes.
What to watch next
The Kerala Forest Department has indicated that it will convene a multi‑stakeholder committee—including temple trustees, local panchayats, NGOs and scientific experts—to draft guidelines for the statutory recognition of sacred groves. The timeline for any legislative amendment, however, is unclear. Observers will be watching for:
1. Draft policy proposals – Any formal document outlining criteria for legal protection, compensation mechanisms for landowners and enforcement protocols.
2. Boundary mapping initiatives – Efforts to use GIS tools and community surveys to delineate grove perimeters, a step that could resolve disputes over land tenure.
3. Funding allocations – Whether state or central government budgets will earmark resources for grove management, restoration or community‑led monitoring.
4. Legal challenges – Potential petitions from developers or private landholders contesting the extension of forest‑reserve status to culturally protected sites.
Nationally, the study may influence other states with similar cultural landscapes, such as Karnataka and Tamil Nadu, where sacred groves also exist but lack systematic documentation. Environmental NGOs have already cited the Kerala findings in policy briefs to the Ministry of Environment, Forests and Climate Change, urging a pan‑Indian review of traditional conservation practices.
Conclusion
The Centre for Ecological Sciences’ survey provides the most extensive quantitative evidence to date that Kerala’s sacred groves function as biodiversity strongholds, outperforming adjacent public forests in species richness, canopy integrity and resistance to human disturbance. By documenting 1,245 plant species—including 87 threatened taxa—the research underscores the ecological dividends of culturally rooted stewardship. Yet translating these findings into durable legal protection will require navigating complex land‑ownership patterns, addressing competing development pressures and establishing robust monitoring mechanisms. As the state’s forest department moves toward drafting statutory safeguards, the outcome could set a precedent for integrating indigenous and faith‑based conservation models into India’s broader environmental policy framework.
Sources
– “Sacred groves key to biodiversity conservation, says study,” The Hindu (National), July 5 2026, https://www.thehindu.com/news/national/kerala/sacred-groves-key-to-biodiversity-conservation-says-study/article71182478.ece
Story synopsis gathered from: The Hindu – National — source
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