Evaluation of the Conceptual Model on Shrubbiness-Desertification on Arid Rangelands

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  • Y A Torres 1Universidad Nacional del Sur (UNS)-Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CIC), San Andrés 800, 8000 Bahía Blanca, Argentina.
  • C A Busso 2CERZOS - Consejo Nacional de Investigaciones Científicas y Técnicas de la República Argentina (CONICET), UNS, San Andrés 800, 8000 Bahía Blanca, Argentina
  • L S Ithurrart 3CERZOS (CONICET), Universidad Nacional del Sur, 8000 Bahía Blanca, Provincia de Buenos Aires, Argentina
  • M L Ambrosino 4CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas de la República Argentina), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de La Pampa, 6300 Santa Rosa, Provincia de La Pampa, Argentina.


Advancement of shrubbiness (increase in plant cover and density of woody
species) on different environments world-wide has generated an increasing interest in
the scientific community, particularly because of its association with the desertification
process which is increasing, also at a world-wide level. There are two opposing
positions, both of them validated by scientific evidences. The greatly accepted position
recognizes shrubbiness as one of the mechanisms conducive to desertification in natural
environments, cataloguing it as a negative process. A different view, based on recent
studies, suggests that shrubbiness should be considered as a positive process because it
may drive a reversal of desertification, depending on the environment and the species
of shrub studied at a site. This review presented within this framework discusses the
existing relationship between shrubbiness and desertification and proposes an approach
that should be considered in future research.
Key words: Shrubbiness, desertification, arid rangelands, arbuscular mycorrhiza, soil
biological crusts.


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How to Cite

Evaluation of the Conceptual Model on Shrubbiness-Desertification on Arid Rangelands. (2019). Annals of Arid Zone, 57(3 & 4). https://epubs.icar.org.in/index.php/AAZ/article/view/85757