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Towards a dryland framework species approach. Research in progress in the Monte Austral of Argentina

Daniel R. Pérez,F. M. Farinaccio,J. Aronson

Published 2019 in Journal of Arid Environments

ABSTRACT

Abstract We discuss the strategies and early results from an ecological restoration and rehabilitation project underway in Monte Austral (Southern Monte) of Argentinian Patagonia. We use this as a platform to propose a dryland framework species approach (DFSA) to ecological restoration and rehabilitation (ERR). DFSA is based on the ‘framework species approach’ developed in mega-diverse tropical forest biomes of Australia and southern Asia over the past 20 years. We discuss how the approach could be adapted and modified to boost the impact of ERR and help achieve more effective recovery of biodiversity, ecosystem health, and human health and well-being in the vast dryland ecosystems of the world. In arid and semiarid ecosystems, not all native species respond well to methods for growing in nurserys, and a key to ERR success is the identification of a coherent set of species selected on the basis of multiple criteria, both ecological and practical, and simple tests for field performance. We describe selection criteria and early results of field trials of three candidate framework plant species undergoing field trials in our region. Of these three, Atriplex lampa and Hyalis argentea var. latisquama showed uniformly high performance while the response of Senecio subulatus var. subulatus varied according to substrates. We also discuss the use of drones, and other tools for both research and action in conjunction with DFSA.

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