@article{fdi:010074450,
  title = {{O}bservation and modelling of vegetation spirals and arcs in isotropic environmental conditions : dissipative structures in arid landscapes},
  author = {{T}lidi, {M}. and {C}lerc, {M}. {G}. and {E}scaff, {D}. and {C}outeron, {P}ierre and {M}essaoudi, {M}. and {K}haffou, {M}. and {M}akhoute, {A}.},
  editor = {},
  language = {{ENG}},
  abstract = {{W}e report for the first time on the formation of spirals like vegetation patterns in isotropic and uniform environmental conditions. {T}he vegetation spirals are not waves and they do not rotate. {T}hey belong to the class of dissipative structures found out of equilibrium. {I}solated or interacting spirals and arcs observed in {S}outh {A}merica ({B}olivia) and {N}orth {A}frica ({M}orocco) are interpreted as a result of curvature instability that affects the circular shape of localized patches. {T}he biomass exhibits a dynamical behaviour with arcs that transform into spirals. {I}nterpretation of observations and of the predictions provided by the theory is illustrated by recent measurements of peculiar plant morphology (the alfa plant, or {S}tipa tenacissima {L}.) originated from northwestern {A}frica and the southern part of the {I}berian {P}eninsula. {T}his article is part of the theme issue '{D}issipative structures in matter out of equilibrium: from chemistry, photonics and biology (part 2)'.},
  keywords = {localized patches ; dissipative structures ; vegetation patterns ; {MAROC} ; {ZONE} {ARIDE}},
  booktitle = {},
  journal = {{P}hilosophical {T}ransactions of the {R}oyal {S}ociety {A} -{M}athematical {P}hysical and {E}ngineering {S}ciences},
  volume = {376},
  numero = {2135},
  pages = {art. 20180026 [14 p.]},
  ISSN = {1364-503{X}},
  year = {2018},
  DOI = {10.1098/rsta.2018.0026},
  URL = {https://www.documentation.ird.fr/hor/fdi:010074450},
}