Traditional Ecological Knowledge as an Effective Tool for Biodiversity Conservation in Ladakh: A Systematic Review

Abstract

Conserving biodiversity in mountain ecosystems is becoming more difficult due to rapid climate change, habitat loss or degradation, lack of sustainable use of these landscapes, and socio-economic change. Ladakh, the Trans Himalayan region, is one of the most ecologically sensitive cold desert ecosystems with unique flora and fauna, and indigenous communities who have lived in harmony with nature for centuries. Traditional Ecological Knowledge (TEK), which has been accumulated over the years by local communities through their interaction with their natural surroundings, gives precious ecological information to manage the natural resources of the area and to conserve biodiversity in a sustainable way. This is a systematic review where various scientific and factual evidence so far generated are brought together as an effective tool for biodiversity conservation in Ladakh. Peer-reviewed articles from the years 2000 to 2025 were systematically searched from Scopus, Web of Science, and Google Scholar following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA 2020) guidelines. It shows that indigenous land use systems, such as rotation of livestock grazing; collective management of water harvesting schemes; sustainable gathering of medicinal plants; protection of sacred landscapes; and participatory management of wildlife resources, have played a vital role in sustaining the resilience of these ecosystems and have conserved biological diversity. Traditional ecological practices contribute to the scientific conservation practices by incorporating ecological sustainability, cultural value, and community engagement. However, rapid climate change, the retreat of glaciers, general infrastructure development, the expansion of tourism, and the erosion of indigenous knowledge threaten the biodiversity and traditional conservation systems. It explicitly identifies the need to incorporate TEK in today\'s biodiversity policies, adaptive ecosystem management, and climate-resilient conservation responses. Improved scientists-policymakers-indigenous peoples relations will promote long-term conservation success and promote Ladakh\'s ecological and cultural values.

Introduction

This review examines the role of Traditional Ecological Knowledge (TEK) in conserving biodiversity in Ladakh, a high-altitude Trans-Himalayan cold desert within the Indian Himalayan Region. Biodiversity is essential for ecosystem functioning, climate regulation, freshwater supply, food production, and human well-being, but is increasingly threatened by habitat loss, climate change, pollution, invasive species, and unsustainable resource use. Mountain ecosystems, which cover about 25% of Earth's land surface and support roughly one-third of terrestrial biodiversity, are particularly vulnerable to climate change and are therefore global conservation priorities.

Despite its harsh environment, characterized by low rainfall, extreme temperatures, high altitude, intense solar radiation, and low oxygen levels, Ladakh supports exceptional biodiversity. Its ecosystems include alpine meadows, dry steppes, wetlands, glaciers, rivers, and rocky mountains that provide habitat for numerous endemic and threatened species, including the snow leopard, Himalayan ibex, blue sheep, Tibetan wild ass (kiang), Tibetan argali, and black-necked crane. The region also contains more than 1,200 vascular plant species, many of which have medicinal, ecological, and economic importance. Protected areas such as Hemis National Park and Changthang Wildlife Sanctuary play key roles in conserving these unique ecosystems.

The review emphasizes that Ladakh's indigenous communities—including the Changpa, Brokpa, Balti, and Ladakhi farmers—have developed extensive Traditional Ecological Knowledge (TEK) through centuries of adaptation to the region's extreme environmental conditions. TEK encompasses ecological observations, resource management practices, cultural values, and community governance systems that are transmitted across generations. It includes sustainable grazing, water harvesting, medicinal plant management, wildlife conservation, and ecosystem monitoring, all of which contribute to long-term ecological balance.

Globally, TEK is increasingly recognized as an important complement to scientific conservation. Indigenous-managed lands often maintain higher biodiversity and ecological integrity than conventionally managed landscapes, leading international frameworks such as the Convention on Biological Diversity (CBD) and the Kunming–Montreal Global Biodiversity Framework to advocate integrating indigenous knowledge into conservation planning.

In Ladakh, TEK supports biodiversity conservation through several traditional practices. Rotational grazing and seasonal migration by Changpa pastoralists prevent overgrazing, maintain vegetation diversity, improve soil fertility, and reduce habitat degradation. Indigenous herders also adjust grazing patterns to minimize competition between livestock and wild herbivores, helping conserve prey species essential for predators such as the snow leopard. Traditional water management systems, including gravity-fed kul irrigation channels and zing water storage structures, efficiently distribute scarce glacial meltwater for agriculture while supporting ecosystem sustainability. Sustainable harvesting of medicinal plants, protection of sacred landscapes, and Buddhist cultural values discouraging hunting further contribute to wildlife conservation and ecological resilience.

However, both biodiversity and TEK in Ladakh are under increasing pressure from rapid climate change, glacier retreat, altered precipitation, habitat fragmentation, tourism expansion, infrastructure development, urbanization, military activities, and changing socioeconomic conditions. Younger generations are increasingly moving away from traditional livelihoods, reducing the transmission of ecological knowledge across generations. These combined environmental and cultural pressures threaten both the region's ecosystems and its indigenous knowledge systems.

Using the PRISMA 2020 systematic review methodology, the study synthesizes research published between 2000 and 2025 from major scientific databases. It identifies a significant knowledge gap, as previous research has focused on individual topics such as ethnobotany or pastoralism rather than providing a comprehensive assessment of TEK's role in biodiversity conservation.

Conclusion

One of the biggest underutilized resources available in the fields of conservation of Biodiversity in Ladakh is the Traditional Ecological Knowledge. Through centuries of engagements among indigenous communities and the precarious environment of the Trans-Himalaya, indigenous peoples have developed TEK that includes high level understanding of wildlife, vegetation, water resources, climate variability and sustainable resource management. Furthermore, evidence synthesised in this systematic review highlights how traditional practices such as community-managed irrigation systems, sustainable harvesting of medicinal plants, sacred landscape protection, a participatory stewardship approach to wildlife, and rotation farming have been integral to the sustainability of ecosystems in addition to sustaining livelihoods. These practices demonstrate the ability to balance biodiversity conservation and sustainable resource use in an adaptive community-based approach. This review also reflects that TEK is not a replacement for, but rather a supplement to formal science-based conservation. The two opposing viewpoints suggested by indigenous observations and modern ecological techniques, can provide information that is both long term and at spatial and temporal levels that are rarely recorded at landscape scale through conventional monitoring programmes. The synergy of complementary knowledge systems holds great promise to better preserve and manage biodiversity and nature-based solutions for climate adaptation and the restoration of ecosystems and livelihoods in the Trans-Himalayan region. However, Traditional Ecological Knowledge and its continuation is now being increasingly threatened by the effects of the climate change, meltwater from glaciers, socio-economic changes, growing tourism, construction of infrastructure and the fading of customs and ways of life among the indigenous people. Unless active conservation of biological and cultural diversity is taken up to preserve the knowledge of the ecology gained through years of Evolution, it may get lost forever. Thus, the policy measures like recognition of community as equal partners, strengthening of customary institutions, ethical documentation of TEK and facilitation of collaborative research combining ecological sciences and indigenous knowledge are necessary for effective biodiversity conservation efforts in the region. Finally, TEK can no longer be considered as a cultural heritage resource; it is a scientifically relevant and useful conservation tool that can contribute to increased ecosystem resilience in an environment where change is increasingly a reality. The integration of indigenous knowledge in the fields of biodiversity sector policy, protected-area management, climate adaptation and sustainable development planning provides significant potential to secure conservation of the unique biological and cultural heritage of Ladakh, as well as to meet country and global conservation goals.

References

[1] Allan, Possingham, Atkinson, Waldron et al. (2022), \"The minimum land area requiring conservation attention to safeguard biodiversity,\" published in Science, 376, 1094–1101, DOI 10.1126/science.abl9127. [2] Angmo, K., Adhikari, B. S., Bussmann, R. W., & Rawat, G. S. (2024). Harmony in nature: Understanding the cultural and ecological aspects of plant use in Ladakh. Journal of Ethnobiology and Ethnomedicine, 20, 34. https://doi.org/10.1186/s13002-024-00670-3 [3] Bagchi, S., Mishra, C., & Bhatnagar, Y. V. (2004). Conflicts between traditional pastoralism and conservation of Himalayan ibex and bharal in the Trans-Himalaya. Ambio, 33(6), 340–345. [4] Ballabh, B., & Chaurasia, O. P. (2007). Medicinal plants of cold desert Ladakh used in the Sowa-Rigpa system of medicine. Journal of Ethnopharmacology. [5] Ballabh, B., Chaurasia, O. P., Ahmed, Z., & Singh, S. B. (2008). Traditional medicinal plants of cold desert Ladakh—Used against kidney and urinary disorders. Journal of Ethnopharmacology. [6] Berkes, F. (2018). Sacred ecology (4th ed.). Routledge. https://doi.org/10.4324/9781315114644 [7] Berkes, F., Colding, J., & Folke, C. (2000). Rediscovery of traditional ecological knowledge as adaptive management. Ecological Applications, 10(5), 1251–1262. https://doi.org/10.1890/1051-0761(2000)010[1251:ROTEKA]2.0.CO;2 [8] Bhatnagar, Y. V., Wangchuk, R., Mishra, C., & Prins, H. H. T. (2006). The response of snow leopard prey to livestock grazing in the Indian Trans-Himalaya. Biological Conservation. [9] Bhojak, Dey, Chandra Sekar, Thapliyal, and Danu (2024), \"Floristic diversity in high-altitude wetlands of Ladakh Union Territory, Trans Himalaya, India,\" Check List 20(4): 915–939. [10] Briske, D. D., Derner, J. D., Brown, J. R., et al. (2008). Rotational grazing on rangelands: Reconciliation of perception and experimental evidence. Rangeland Ecology & Management, 61(1), 3–17. https://doi.org/10.2111/06-159R.1 [11] Convention on Biological Diversity. (2022). Kunming–Montreal Global Biodiversity Framework. Montreal, Canada. [12] Dame, J., & Nüsser, M. (2011). Food security in high mountain regions: Agricultural production and irrigation in Ladakh. Mountain Research and Development. [13] Díaz, S., Settele, J., Brondízio, E. S., et al. (2019). Pervasive human-driven decline of life on Earth points to the need for transformative change. Science, 366(6471), eaax3100. https://doi.org/10.1126/science.aax3100 [14] Folke, C. (2004). Traditional knowledge in social–ecological systems. Ecology and Society, 9(3), 7. https://doi.org/10.5751/ES-01237-090307 [15] Fox, J. L., Nurbu, C., & Chundawat, R. S. (1991). The mountain ungulates of Ladakh, India. Biological Conservation. [16] Gadgil, M., Berkes, F., & Folke, C. (1993). Indigenous knowledge for biodiversity conservation. Ambio, 22(2–3), 151–156. [17] Garnett, S. T., Burgess, N. D., Fa, J. E., et al. (2018). A spatial overview of the global importance of Indigenous lands for conservation. Nature Sustainability, 1, 369–374. https://doi.org/10.1038/s41893-018-0100-6 [18] Houde, N. (2007). The six faces of traditional ecological knowledge: Challenges and opportunities for Canadian co-management arrangements. Ecology and Society, 12(2), 34. https://doi.org/10.5751/ES-02270-120234 [19] Intergovernmental Panel on Climate Change. (2023). Climate Change 2023: Synthesis Report. IPCC. [20] Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services. (2019). Global assessment report on biodiversity and ecosystem services. IPBES Secretariat. [21] Jackson, R., & Wangchuk, R. (2004). A community-based approach to mitigating livestock depredation by snow leopards. Human Dimensions of Wildlife. [22] Kala, C. P. (2005). Indigenous uses, population density and conservation of threatened medicinal plants in protected areas of the Indian Himalaya. Conservation Biology, 19(2), 368–378. https://doi.org/10.1111/j.1523-1739.2005.00602.x [23] Körner, C. (2004). Mountain biodiversity, its causes and function. Ambio Special Report, 13, 11–17. [24] Maheshwari & Sathyakumar (2020), \"Patterns of livestock depredation and large carnivore conservation implications in the Indian Trans-Himalaya,\" Journal of Arid Environments, 182, 104241. [25] McCarthy, T., & Mallon, D. (Eds.). (2016). Snow leopards. Academic Press. [26] Mishra, C., Van Wieren, S. E., Ketner, P., Heitkönig, I. M. A., & Prins, H. H. T. (2004). Competition between domestic livestock and wild bharal Pseudois nayaur in the Indian Trans-Himalaya. Journal of Applied Ecology, 41(2), 344–354. https://doi.org/10.1111/j.0021-8901.2004.00885.x [27] Moher, D., Liberati, A., Tetzlaff, J., Altman, D. G., & PRISMA Group. (2009). Preferred Reporting Items for Systematic Reviews and Meta-Analyses: The PRISMA Statement. PLoS Medicine, 6(7), e1000097. https://doi.org/10.1371/journal.pmed.1000097 [28] Namgail, T., Fox, J. L., & Bhatnagar, Y. V. (2007). Habitat shift and time budget of the Tibetan argali in Ladakh. Acta Theriologica. [29] Nüsser, M., Dame, J., Kraus, B., et al. (2012). Sociohydrology of glacier-fed irrigation systems in Ladakh. Mountain Research and Development. [30] Page, M. J., McKenzie, J. E., Bossuyt, P. M., et al. (2021). The PRISMA 2020 statement: An updated guideline for reporting systematic reviews. BMJ, 372, n71. https://doi.org/10.1136/bmj.n71 [31] Payne, D., Spehn, E. M., Snethlage, M., et al. (2020). Mountains and climate change: A global assessment. Mountain Research and Development. [32] Pettorelli, N., Laurance, W. F., O\'Brien, T. G., et al. (2014). Satellite remote sensing for applied ecologists: Opportunities and challenges. Journal of Applied Ecology, 51(4), 839–848. https://doi.org/10.1111/1365-2664.12261 [33] Rawat, G. S., & Adhikari, B. S. (2005). Floristics and distribution of plant communities across moisture and topographic gradients in Ladakh. Wildlife Institute of India. [34] Snyder, H. (2019). Literature review as a research methodology: An overview and guidelines. Journal of Business Research, 104, 333–339. https://doi.org/10.1016/j.jbusres.2019.07.039 [35] United Nations. (2015). Transforming our world: The 2030 Agenda for Sustainable Development. United Nations. [36] Xu, J., Wester, P., Wang, Y., et al. (2019). The Hindu Kush Himalaya Assessment: Mountains, climate change, sustainability and people. Mountain Research and Development, 39(4), A1–A7. https://doi.org/10.1659/MRD-JOURNAL-D-19-00074.1

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Copyright © 2026 Iftikar Ali, Abhinav Sahay. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.