journal article Open Access Nov 01, 2021

Definition of “fairy circles” and how they differ from other common vegetation gaps and plant rings

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Abstract
AbstractAimsThe fairy circles along the Namib Desert in southern Africa are round grassland gaps that have puzzled scientists for about 50 years. With the discovery of fairy circles in Australia in 2016, the debate on the origin of the circles has been extended to a new continent. Research interest on the topic has since then risen strongly but so has the use of the term “fairy circle”. This term has become more imprecise and, by analogy, has been applied to circular vegetation gaps or plant rings that are largely unrelated to fairy circles. For this reason, we define the concept of fairy circles by identifying their three main characteristics based on in situ field observations and soil excavations to larger‐scale spatial patterns, and regional‐scale distribution.ResultsFollowing this approach, fairy circles are defined by: (a) being “empty gaps” in grassland without a central insect‐nest structure; (b) their ability to form spatially periodic patterns, which are regular hexagonal patterns with an extraordinary degree of spatial ordering; and (c) their strongly regional distribution confined within a narrow arid climatic envelope. In these combined traits, fairy circles differ from other common vegetation gaps which, for example, always have a central insect‐nest structure and may occur across broad climatic gradients on continents. Also plant rings have their own specific characteristics that largely differ from the combined attributes of genuine fairy circles.ConclusionsThere are many other vegetation‐gap patterns in arid lands but if such gaps cannot jointly show the three characteristics defining the fairy circles, they should be carefully discussed on their own, rather than mixing them up with fairy circles. Our synthesis provides a new etymology for the different types of vegetation gaps and rings, aiming to guide the reader through various classes of circular plant patterns.
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References
75
[1]
Abensperg‐Traun M. "Distribution and characteristics of mound‐building termites (Isoptera) in Western Australia" Journal of the Royal Society of Western Australia (1998)
[4]
Ring formation in clonal plants

G. Bonanomi, G. Incerti, A. Stinca et al.

Community Ecology 10.1556/comec.15.2014.1.8
[6]
Carrington D. (2014)
[7]
Microbiomics of Namib Desert habitats

D. A. Cowan, D. W. Hopkins, B. E. Jones et al.

Extremophiles 10.1007/s00792-019-01122-7
[22]
Adopting a spatially explicit perspective to study the mysterious fairy circles of Namibia

Stephan Getzin, Kerstin Wiegand, Thorsten Wiegand et al.

Ecography 10.1111/ecog.00911
[25]
Discovery of fairy circles in Australia supports self-organization theory

Stephan Getzin, Hezi Yizhaq, Bronwyn Bell et al.

Proceedings of the National Academy of Sciences 10.1073/pnas.1522130113
[31]
Henschel J.R. "Temporal and spatial variability of grass productivity in the central Namib Desert" African Study Monographs (2005)
[38]
Mannheimer C. (2008)
[42]
Moll E.J. (1994)
[46]
Noble J. "The spatial distributions of termite pavements and hummock feeding sites in a semi‐arid woodland in eastern Australia" Acta Oecologica (1989)
[48]
Ants and the enigmatic Namibian fairy circles – cause and effect?

MIKE D. PICKER, VERE ROSS‐GILLESPIE, KELLY VLIEGHE et al.

Ecological Entomology 10.1111/j.1365-2311.2011.01332.x

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Published
Nov 01, 2021
Vol/Issue
32(6)
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Stephan Getzin, Hezi Yizhaq, Walter R. Tschinkel (2021). Definition of “fairy circles” and how they differ from other common vegetation gaps and plant rings. Journal of Vegetation Science, 32(6). https://doi.org/10.1111/jvs.13092
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