Strong interaction between plants induces circular barren patches: Fairy circles

C. Fernandez-Oto; M. Tlidi; D. Escaff; M. G. Clerc

doi:10.1098/rsta.2014.0009

Strong interaction between plants induces circular barren patches: Fairy circles

C. Fernandez-Oto^*, M. Tlidi, D. Escaff, M. G. Clerc

^*Autor correspondiente de este trabajo

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

56 Citas (Scopus)

Resumen

Fairy circles consist of isolated or randomly distributed circular areas devoid of any vegetation. They are observed in vast territories in southern Angola, Namibia and South Africa. We report on the formation of fairy circles, and we interpret them as localized structures with a varying plateau size as a function of the aridity. Their stabilization mechanism is attributed to a combined influence of the bistability between the bare state and the uniformly vegetation state, and Lorentzian-like non-local coupling that models the competition between plants. We show how a circular shape is formed, and how the aridity level influences the size of fairy circles. Finally, we show that the proposed mechanism is model-independent.

Idioma original	Inglés
Número de artículo	0009
Publicación	Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
Volumen	372
N.º	2027
DOI	https://doi.org/10.1098/rsta.2014.0009
Estado	Publicada - 28 oct. 2014

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© 2014 The Author(s) Published by the Royal Society.

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title = "Strong interaction between plants induces circular barren patches: Fairy circles",

abstract = "Fairy circles consist of isolated or randomly distributed circular areas devoid of any vegetation. They are observed in vast territories in southern Angola, Namibia and South Africa. We report on the formation of fairy circles, and we interpret them as localized structures with a varying plateau size as a function of the aridity. Their stabilization mechanism is attributed to a combined influence of the bistability between the bare state and the uniformly vegetation state, and Lorentzian-like nonlocal coupling that models the competition between plants. We show how a circular shape is formed, and how the aridity level influences the size of fairy circles. Finally, we show that the proposed mechanism is model-independent.",

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AU - Fernandez-Oto, C.

AU - Tlidi, M.

AU - Escaff, D.

AU - Clerc, M. G.

PY - 2014/10/28

Y1 - 2014/10/28

N2 - Fairy circles consist of isolated or randomly distributed circular areas devoid of any vegetation. They are observed in vast territories in southern Angola, Namibia and South Africa. We report on the formation of fairy circles, and we interpret them as localized structures with a varying plateau size as a function of the aridity. Their stabilization mechanism is attributed to a combined influence of the bistability between the bare state and the uniformly vegetation state, and Lorentzian-like nonlocal coupling that models the competition between plants. We show how a circular shape is formed, and how the aridity level influences the size of fairy circles. Finally, we show that the proposed mechanism is model-independent.

AB - Fairy circles consist of isolated or randomly distributed circular areas devoid of any vegetation. They are observed in vast territories in southern Angola, Namibia and South Africa. We report on the formation of fairy circles, and we interpret them as localized structures with a varying plateau size as a function of the aridity. Their stabilization mechanism is attributed to a combined influence of the bistability between the bare state and the uniformly vegetation state, and Lorentzian-like nonlocal coupling that models the competition between plants. We show how a circular shape is formed, and how the aridity level influences the size of fairy circles. Finally, we show that the proposed mechanism is model-independent.

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KW - Localized structures

KW - Population dynamics

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Strong interaction between plants induces circular barren patches: Fairy circles

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