The region of Bhutan is thought to be the only segment of the Himalayas not having experienced a major earthquake over the past half millennium. A proposed explanation for this apparent seismic gap is partial accommodation of the India‐Asia convergence further south across the Shillong Plateau, yet the seismic behavior of the Himalayan megathrust in Bhutan is unknown. Here we present historical documents from the region reporting on an earthquake in 1714 A.D. and geological evidence of surface rupture to constrain the latest large event in this area. We compute various earthquake scenarios using empirical scaling relationships relating magnitude with intensity, source location and rupture geometry. Our results constrain the 1714 A.D. earthquake to have ruptured the megathrust in Bhutan, most likely during a M7.5–8.5 event. This finding reclassifies the apparent seismic gap to a former information gap and implies that the entire Himalayan arc has a high level of earthquake potential.
Throughout the Hindu Kush Himalayas, uncultivated plants provide a green social and cultural security to millions of people supporting their livelihood. Review on evaluating the multifunctional role of uncultivated plants in perspective of livelihood support finds that plants add diversity to local food systems, reinforce local culture and contribute diversity to farming systems, and finally are important for household food and nutrition security, social security, income generation and health care. Further, this paper clarifies that local people maintain and conserve diversity for the sake of use. The wise conservation and use of uncultivated plants are essential elements for increasing food security, eliminating poverty, and maintaining the environment. However, the value and potential of uncultivated plants for food and nutrition security, household level health care, income generation opportunity are not yet realized. Fast changing climate and early projections on its impacts suggest that such programmes must increasingly consider the sustenance of ecosystem that promotes uncultivated plants as basis for the welfare of millions.
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