Distribution, regeneration status and nutritional analysis of Quercus glauca Thunberg in the Himalaya

The present review focuses on the distribution, regeneration status and nutritive potential of Quercus glauca Thunberg in the Indian Himalayan region. The species is widely distributed in the northwestern Himalaya, particularly in Himachal Pradesh and Uttarakhand, where it grows in moist and shady habitats and forms an important component of evergreen broadleaf forests. It is closely associated with rural livelihoods and serves as a valuable fodder resource for livestock. The leaves of Q glauca possess high nutritive value with considerable crude protein, mineral content and moderate fibre composition, making it suitable for sustaining livestock productivity in hill agroecosystems. Despite its ecological and economic importance, the species is facing serious challenges in natural regeneration due to anthropogenic disturbances, overgrazing, limited seed viability, poor dispersal and changing climatic conditions. Seed germination in Quercus species is influenced by several factors including seed size, altitude, time of collection and pre-sowing treatments. Physical treatments such as scarification and water soaking along with proper nursery management have been found effective in improving germination and seedling establishment. The review highlights that regeneration of Q glauca is site-specific and favoured under moderate disturbance and adequate canopy gaps. However, overall regeneration remains inadequate across its natural distribution range. The study emphasizes the need for integrated management strategies focusing on habitat conservation, improvement in regeneration techniques and sustainable utilization of the species.