Continuity and discontinuity: illuminating and interlacing the adventures of Viviane and Merlin in the 'Prose Merlin'

La rareté des miniatures consacrées à l'histoire amoureuse de Merlin et Viviane, dont le développement est à la fois épisodique et structuré par le recours au procédé de l'entrelacement, souligne son caractère marginal au sein de la narration. Les artistes et concepteurs de ces ouvrages manifestent une certaine réticence à l'égard d'aventures qui peuvent affecter l'autorité morale de Merlin, même si elles sont étroitement liées à la disparition du personnage et à la clôture du récit.

A sustainable agricultural landscape for Australia: A review of interlacing carbon sequestration, biodiversity and salinity management in agroforestry systems

Transformation of the south-western Australian landscape from deep-rooted woody vegetation systems to shallow-rooted annual cropping systems has resulted in the severe loss of biodiversity and this loss has been exacerbated by rising ground waters that have mobilised stored salts causing extensive dry land salinity. Since the original plant communities were mostly perennial and deep rooted, the model for sustainable agriculture and landscape water management invariably includes deep rooted trees. Commercial forestry is however only economical in higher rainfall (>700 mm yr−1) areas whereas much of the area where biodiversity is threatened has lower rainfall (300–700 mm yr−1). Agroforestry may provide the opportunity to develop new agricultural landscapes that interlace ecosystem services such as carbon mitigation via carbon sequestration and biofuels, biodiversity restoration, watershed management while maintaining food production. Active markets are developing for some of these ecosystem services, however a lack of predictive metrics and the regulatory environment are impeding the adoption of several ecosystem services. Nonetheless, a clear opportunity exists for four major issues – the maintenance of food and fibre production, salinisation, biodiversity decline and climate change mitigation – to be managed at a meaningful scale and a new, sustainable agricultural landscape to be developed.