Publications
An ethnobotanical insight into the healing traditions as strategies for forest conservation of indigenous ethnic communities in the West Sikkim district of the Sikkim Himalayas, India
Indigenous communities in West Sikkim, home to the UNESCO-listed Khangchendzonga National Park, rely on a rich repository of 70 medicinal plant species for treating 31 health conditions. Sacred groves, culturally protected forest patches, play a pivotal role in conserving these plants while reinforcing community-led biodiversity stewardship. The study, conducted through interviews with 218 informants, revealed that herbs dominate traditional remedies, with roots being the most frequently used plant part and decoction the preferred preparation method. Notably, Cordyceps sinensis showed the highest use value (0.96) and Relative Frequency of Citation (1), highlighting its significance in local remedies. The research underscores the importance of preserving traditional medicine and conservation practices like sacred groves to protect cultural heritage and advance future drug discovery.
Potential Distribution of the Asiatic Black Bear in Khangchendzonga National Park, Sikkim Eastern Himalaya using MaxEnt Modeling
A study using MaxEnt modeling reveals that the Asiatic black bear (Ursus thibetanus) occupies approximately 360.32 km², or 20.19% of the core area in Khangchendzonga National Park, with a strong preference for temperate zones over sub-alpine and alpine regions. Critical factors influencing its distribution include precipitation patterns (driest and wettest months), mean diurnal temperature range, aspect, and land use/land cover (LULC). The research employed sign surveys, camera trapping, and trail monitoring to collect presence-only data, with 15 key environmental variables identified after addressing multicollinearity. The model demonstrated excellent predictive accuracy (mean AUC = 0.941), highlighting significant bear activity in broadleaved forests, coniferous patches, and grasslands. Notably, large distributional areas were predicted outside the core zone, suggesting potential for human-bear interactions in buffer and transition zones. These findings provide actionable insights for conservation planning to mitigate conflicts.
Thrips Fauna of Khangchendzonga National Park, Sikkim With First Description of Hitherto Unknown Male Smilothrips productus Bhatti
A survey of thrips fauna in Khangchendzonga National Park, Sikkim Himalaya, revealed 44 species across altitudes ranging from 899 to 2035 meters above sea level. The study, conducted between 2020 and 2021, documented diverse feeding behaviors including phyllophilous (leaf-feeding), anthophilous (flower-visiting), gall-inducing, mycophagous (fungus-feeding), and grass-inhabiting thrips. Notably, the first description of the hitherto unknown male of Smilothrips productus Bhatti was provided, with observations indicating that Indian populations are exclusively macropterous, unlike Chinese forms which include micropterous and brachypterous individuals.
Rangeland Conservation, Pastoralist Displacement, and Long-term Implications of a Grazing Ban in the Indian Himalaya
A grazing ban implemented in Khangchendzonga National Park, Sikkim, India, in 1998, led to pastoral evictions between 2000–2002 and had long-term social and ecological implications. Research conducted 15 years after the ban revealed that while powerful pastoralists benefited from conservation policies, weaker sections of the community faced further impoverishment. The study also found that such evictions do not necessarily aid biodiversity conservation but instead foster social conflicts and introduce new conservation challenges. The research assessed eviction processes, documented pastoral responses, and explored perceived ecological outcomes to understand these complex dynamics.
Conservation Policies, Eco-Tourism, and End of Pastoralism in Indian Himalaya?
A critical analysis of conservation policies in Khangchendzonga National Park, India, reveals that the fortress model—combining pastoralist removal and eco-tourism promotion—fails to benefit either biodiversity or local communities. The study found that grazing bans and tourism-driven transitions from traditional yak herding to non-native livestock disrupted pastoral culture, reduced economic stability, and altered vegetation diversity, while increasing human-wildlife conflicts. Using mixed methods (48 interviews, 10 key informant discussions, and two focused group sessions), researchers concluded that current policies prioritize state interests over inclusive development, often harming both society and ecology. The findings underscore the need for trans-boundary conservation planning that integrates pastoralist practices to balance cultural preservation with ecological goals.
Forest Resource Use Pattern in Fringe Villages of Barsey Rhododendron Sanctuary and Singalila National Park of Khangchendzonga Landscape, India
A high dependence on forest resources (Resource Dependence Index: 0.60) was observed in fringe villages of Barsey Rhododendron Sanctuary and Singalila National Park within Khangchendzonga Landscape, India, with significant disparities in resource use patterns between villages. While Alnus nepalensis is the preferred fuel species (probability of use: 0.791), Rhododendron arboreum remains underutilized (probability: 0.09). Selective harvesting of preferred medicinal plants and wild edibles, such as Yushania maling, exacerbates pressure on specific plant groups despite their limited availability for broader uses like fuelwood. The study, based on interviews with 233 households and market surveys, highlights a critical gap between resource demand and production, suggesting potential over-extraction from reserve forests. These findings underscore the need for targeted conservation policies to balance ecosystem sustainability with local livelihoods.
Seasonal diets of Asiatic black bear (Ursus thibetanus) in the Khangchendzonga National Park, Eastern Himalaya India
Asiatic black bears (Ursus thibetanus) in Khangchendzonga National Park exhibit seasonal diet shifts, with a notable reliance on bamboo during summer and a broader plant-based diet in winter. The study, conducted by Basnett et al. (2021), analyzed fecal samples to identify dietary components across seasons, revealing that bears adapt their foraging strategies to the availability of resources. This research highlights the ecological importance of bamboo in the Eastern Himalayan ecosystem and provides insights into the adaptive behavior of this species within a UNESCO World Heritage Site.
Buddhist Monastic Trek Circuit Amidst of a Geotourism Landscape: A Study in the Vicinity of Khangchendzonga National Park in India
A study on Khangchendzonga National Park reveals significant potential for sustainable symbiosis between Buddhist tourism and geotourism, leveraging the region's rich natural and cultural heritage. The research highlights how the park's sacred Buddhist landscape can be developed into a geotourism destination while preserving its tangible and intangible values. Using GIS and SWOT analysis, the study evaluates the existing heritages and addresses gaps in sustainable utilization of such landscapes. This approach offers a model for balancing tourism development with cultural and environmental conservation, providing valuable insights for similar regions globally.
Timberline structure and woody taxa regeneration towards treeline along latitudinal gradients in Khangchendzonga National Park, Eastern Himalaya
A study of timberline forests in Khangchendzonga National Park reveals that tree density here is significantly higher than in other parts of the Western Himalayas. The research identified 20 woody species, with Abies densa, Rhododendron lanatum, and Sorbus microphylla dominating 50% of the importance value index (IVI). Notably, Betula utilis, a common treeline species in the region, was absent. Environmental factors such as elevation, slope, and humus were found to influence species composition, while species dominance negatively correlated with diversity and richness. The study also observed irregular spatial patterns of timberline elements, suggesting that upslope advancement is unlikely in the near future, but treeline densification may occur. These findings provide a baseline for understanding timberline dynamics in this critical Himalayan ecosystem.
Developing a Monitoring Programme for Mammals in Himalayan Protected Areas: A case study from Khangchendzonga National Park and Biosphere Reserve, Sikkim, India
A comprehensive monitoring programme for mammals in Khangchendzonga National Park and Biosphere Reserve, Sikkim, India, was developed using field techniques like trail monitoring, scan counts, camera trapping, and dung counts between 2008-2012. The study confirmed the presence of 42 mammal species, with camera trapping proving most effective for carnivores and solitary ungulates. To detect a 10% annual decline in snow leopard populations with 70% power, 800 effective camera days per year over seven years are required. The estimated cost for detecting significant population changes in mammals ranges from Rs.3,067,000 (US$51,116) over 10-15 years. Regular monitoring of critical habitats and strict patrolling can mitigate negative impacts of anthropogenic activities such as unsupervised livestock grazing and unsustainable resource extraction.
Assessment of Landscape Characteristics and Changes in the Khangchendzonga National Park, Sikkim Himalaya, India
A significant decline in vegetation cover at lower elevations (1000 to 2500 m) within the Khangchendzonga National Park (KNP), India, has been observed over the past three decades, particularly in areas not protected by buffer forests. This study utilized Remote Sensing and GIS tools, including Landsat ETM+ data, to classify 10 land cover types with 81% accuracy, revealing that snow, rock, and alpine meadows dominate the landscape. FRAGSTATS identified a high number of small patches (mean size 1.2 ha), indicating fragmented landscapes. Watershed-based analysis highlighted regions with greater Himalayan character, marked by high elevation gradients and east-west orientation, while riverine zones were found to be vulnerable to glacial lake outburst floods. The research underscores the need for innovative co-management models, careful utilization of riverine areas, and strengthened buffer zone management to prioritize conservation efforts in high-impact regions.
The Alpine Vegetation of the Khangchendzonga Landscape, Sikkim Himalaya
Alpine vegetation in Khangchendzonga National Park, part of the Eastern Himalaya biodiversity hotspot, exhibits distinct patterns shaped by rainfall, elevation, and soil conditions. The study identifies 11 alpine vegetation types, including dominant scrub and sedge meadows, with a notable absence of extensive grassy meadows compared to the Western Himalaya. Numerical classification revealed that this region's alpine zone is narrower, more fragmented, and depauperated, contributing to lower alpha species diversity. Environmental gradients were primary determinants of vegetation distribution, highlighting the unique ecological dynamics of this third-highest landscape in the world.
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