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Q7:
What are sacred groves? What is their role in conservation?
Solution :
Part 1: Defining Sacred Groves & Theoretical Foundation
Sacred groves are pristine tracts of forest that are conserved by local communities due to their deeply rooted religious and cultural beliefs. In these forest patches, specific deities or ancestral spirits are venerated, and strict taboos are enforced against any form of resource extraction, such as logging, hunting, or even gathering fallen branches. [As per the principles of traditional ecological knowledge, this represents a community-led model of In-situ conservation].
Because of the complete prohibition on human interference, these groves often represent the climax vegetation of the respective geographical region and serve as a repository of immense genetic and species diversity.
Part 2: Geographical Distribution in India
India has a rich tradition of nature worship, and sacred groves are found across various states. Ecologists have documented thousands of such groves, which serve as localized biodiversity hotspots. The most prominent examples include:
| Region/State | Notable Sacred Groves | Ecological Significance |
|---|---|---|
| Meghalaya | Khasi and Jaintia Hills | Often represent the last refugia for a large number of rare and threatened plant species. |
| Rajasthan | Aravalli Hills | Crucial for maintaining desert and semi-arid biodiversity and preventing soil erosion. |
| Western Ghats (Karnataka & Maharashtra) | Devarakadus (Karnataka), Devrais (Maharashtra) | Harbor a highly endemic flora and fauna; critical for watershed protection in the Ghats. |
| Madhya Pradesh & Chhattisgarh | Sarguja, Chanda, and Bastar areas | Protect central Indian deciduous forest taxa and preserve the ancestral gene pool of local crops. |
Part 3: Spatial Ecology and Conservation Model (Visual Aid)
The conservation efficacy of a sacred grove can be modeled as a concentric gradient of anthropogenic restriction. The core is completely undisturbed, functioning under the ecological principle of the Species-Area Relationship $S = cA^z$, where maintaining an undisturbed area ($A$) maximizes the preserved species richness ($S$).
Step 4: Analytical Breakdown of their Role in Conservation
- Refugia for Threatened Species: Many sacred groves act as the last refuge for severely threatened, rare, and endemic taxa that have been entirely extirpated from surrounding deforested or cultivated landscapes. For example, in Meghalaya, the sacred groves are the last sanctuaries for several endangered plant species.
- Preservation of the Gene Pool: By remaining undisturbed for centuries, they preserve a vast genetic diversity (wild relatives of cultivated crops, medicinal plants, etc.). This genetic reservoir is critical for future biological research and natural selection [Aligned with the principles of genetic conservation].
- Ecosystem Services & Hydrological Cycles: The dense vegetation canopy minimizes soil erosion, maintains local soil moisture, and facilitates the recharging of underground aquifers. Many sacred groves are intrinsically associated with natural springs or perennial water bodies.
- In-situ Conservation: They are excellent examples of In-situ (on-site) conservation. Instead of moving species to ex-situ facilities (like botanical gardens), the entire ecosystem is preserved holistically in its natural geographic location.
Final Solution: Sacred groves are forest fragments protected communally by indigenous and local communities due to profound religious reverence and taboos against natural resource extraction. Their primary role in conservation is acting as In-situ biological refugia, preserving highly endemic and threatened species, protecting ancient gene pools, and sustaining vital localized ecosystem services such as soil and water conservation.
More Questions from Class 12 Biology Biodiversity and Conservation EXERCISES
- Q1: Name the three important components of biodiversity.
- Q1: Name the three important components of biodiversity.
- Q2: How do ecologists estimate the total number of species present in the world?
- Q2: How do ecologists estimate the total number of species present in the world?
- Q3: Give three hypotheses for explaining why tropics show greatest levels of species richness.
- Q3: Give three hypotheses for explaining why tropics show greatest levels of species richness.
- Q4: What is the significance of the slope of regression in a species – area relationship?
- Q4: What is the significance of the slope of regression in a species – area relationship?
- Q5: What are the major causes of species losses in a geographical region?
- Q5: What are the major causes of species losses in a geographical region?
- Q6: How is biodiversity important for ecosystem functioning?
- Q6: How is biodiversity important for ecosystem functioning?
- Q7: What are sacred groves? What is their role in conservation?
- Q8: Among the ecosystem services are control of floods and soil erosion. How is this achieved by the biotic components of the ecosystem?
- Q8: Among the ecosystem services are control of floods and soil erosion. How is this achieved by the biotic components of the ecosystem?
- Q9: The species diversity of plants (22 per cent) is much less than that of animals (72 per cent). What could be the explanations to how animals achieved greater diversification?
- Q9: The species diversity of plants (22 per cent) is much less than that of animals (72 per cent). What could be the explanations to how animals achieved greater diversification?
- Q10: Can you think of a situation where we deliberately want to make a species extinct? How would you justify it?
- Q10: Can you think of a situation where we deliberately want to make a species extinct? How would you justify it?
CBSE Solutions for Class 12 Biology Biodiversity and Conservation
Chapters in CBSE - Class 12 Biology
- Reproduction in Organisms
- Human Reproduction
- Reproductive Health
- Principles of Inheritance and Variation
- Molecular Basis of Inheritance
- Evolution
- Human Health and Disease
- Strategies for Enhancement in Food Production
- Microbes in Human Welfare
- Biotechnology: Principles and Processes
- Biotechnology and Its Applications
- Organisms and Populations
- Ecosystem
- Environmental Issues
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