Periodic versus scale-free patterns in dryland vegetation (Articolo in rivista)

Type
Label
  • Periodic versus scale-free patterns in dryland vegetation (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1098/rspb.2009.2208 (literal)
Alternative label
  • von Hardenberg, J.; A. Y. Kletter; H. Yizhaq; J. Nathan; E. Meron (2010)
    Periodic versus scale-free patterns in dryland vegetation
    in Proceedings - Royal Society. Biological sciences (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • von Hardenberg, J.; A. Y. Kletter; H. Yizhaq; J. Nathan; E. Meron (literal)
Pagina inizio
  • 1771 (literal)
Pagina fine
  • 1776 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://rspb.royalsocietypublishing.org/content/277/1688/1771 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 1688 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • doi: 10.1098/rspb.2009.2208 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • von Hardenberg: ISAC-CNR, C.so Fiume 4, 10133 Torino, Italy Kletter, Meron: Dep. of Physics, Ben-Gurion University, Beer Sheva 84105, Israel Yizhaq, Nathan, Meron: Blaustein Institutes for Desert Research, Ben-Gurion University, Sede Boqer Campus 84990, Israel (literal)
Titolo
  • Periodic versus scale-free patterns in dryland vegetation (literal)
Abstract
  • Two major forms of vegetation patterns have been observed in drylands: nearly periodic patterns with characteristic length scales, and amorphous, scale-free patterns with wide patch-size distributions. The emergence of scale-free patterns has been attributed to global competition over a limiting resource, but the physical and ecological origin of this phenomenon is not understood. Using a spatially explicit mathematical model for vegetation dynamics in water-limited systems, we unravel a general mechanism for global competition: fast spatial distribution of the water resource relative to processes that exploit or absorb it. We study two possible realizations of this mechanism and identify physical and ecological conditions for scale-free patterns. We conclude by discussing the implications of this study for interpreting signals of imminent desertification. (literal)
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