Abstract:
Climate change and emerging pests and diseases are posing important challenges to global crop
productivity, including that of Arabica coffee. The genetic basis of commercially used Arabica coffee
cultivars is extremely narrow, and it is uncertain how much genetic diversity is present in ex situ
collections. Conserving the wild Arabica coffee gene pool and its evolutionary potential present in the
montane forests of SW Ethiopia is thus critically important for maintaining coffee yield and yield stability
worldwide. Globally, coffee agroforestry helps to conserve forest cover and forest biodiversity that cannot
persist in open agricultural landscapes, but the conservation of the wild Arabica coffee gene pool requires
other priorities than those that are usually set for conserving forest biodiversity in mixed tropical
landscapes. We show how forest loss and degradation, coffee management, in particular production
intensification, and the introduction of cultivars, are threatening the genetic integrity of these wild
populations. We propose an active land sparing approach based on strict land use zoning to conserve the
genetic resources and the in situ evolutionary potential of Arabica coffee and discuss the major challenges
including the development of access and benefit sharing mechanisms for ensuring long-term support to
conservation.
