| Summary: | Abstract Pastoral systems are known to be prone to social, political and ecological uncertainties. Traditional ecological knowledge that the pastoral communities hold around their bio-physical environment has been a key to cope with stressors and adapt to the rapid socio-economic changes. We examined traditional ecological knowledge (TEK) on livestock and resource management, factors influencing livestock production and concurrent changes in an agro-pastoral system. We used mixed methods by conducting 44 semi-structured interviews, 10 key informants’ interviews and resource mapping in five villages of Upper Spiti Landscape, western Himalaya. Our specific objectives were to (i) document TEK on livestock diet and management and (ii) understand the drivers and consequences of the change in the agro-pastoral society and associated traditional knowledge system. The herders of the study area possessed extensive knowledge of livestock diet and fodder species preference. They used this knowledge to optimize livestock grazing in pastures during summers and to fulfil the nutrient requirements of livestock species during stall feeding in winters. Seasonally, the aspect, altitude and accessibility of the pasture influenced the rotational use of pastures. In contrast, the quality of forage and water availability, distance of the pasture from village and threats from predators influenced the selection of grazing areas daily. There are evident changes in the livestock production system and signs that TEK is eroding in the region. Primary contributing factors to loss of TEK include changing aspirations of local people. These aspirations were related to employment in lucrative alternative options like cash crops and tourism, out-migration of the young generation for higher education and the arrival of immigrant labourers as new actors in livestock management. Livestock numbers in the study site remained dynamic between the year 2003-2016 owing to the substantive social and ecological changes. Our results suggest that while the traditional knowledge persists, the signs of erosion in traditional knowledge and associated changes in current herding practices are evident. We argue that recent changes in the pastoral social-ecological system, especially loss of TEK and non-traditional rearing practices, due to increasing dependence on immigrant labourers, may have negative implications for livestock production, rangeland health and wildlife conservation goals in the long run. Long term site-specific studies on livestock production and associated knowledge would be critical for adaptive rangeland management and policies.
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