Evidence map›Paper›PMID 37748063›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2023

The global biogeography and environmental drivers of fairy circles.

Emilio Guirado, Manuel Delgado-Baquerizo, Blas M Benito, José Luis Molina-Pardo, Miguel Berdugo, Jaime Martínez-Valderrama, Fernando T Maestre

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

7 citing papers in PubMed.

  1. Article
  2. Article
  3. Causes and consequences of disordered hyperuniformity in global drylands.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  4. Article
  5. Review
  6. Phenotypic plasticity: A missing element in the theory of vegetation pattern formation.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  7. Fairy circle tales.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors.

Emilio GuiradoInstituto Multidisciplinar para el Estudio del Medio 'Ramón Margalef', Universidad de Alicante, Alicante 03690, Spain.ORCID 0000-0001-5348-7391
Manuel Delgado-BaquerizoLaboratorio de Biodiversidad y Funcionamiento Ecosistémico. Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS), Consejo Superior de Investigaciones Científicas (CSIC), Sevilla 41012, Spain.ORCID 0000-0002-6499-576X
Blas M BenitoInstituto Multidisciplinar para el Estudio del Medio 'Ramón Margalef', Universidad de Alicante, Alicante 03690, Spain.ORCID 0000-0001-5105-7232
José Luis Molina-PardoCentro de Colecciones Científicas de la Universidad de Almería, Almería 04120, Spain.ORCID 0000-0001-7270-366X
Miguel BerdugoCrowther Lab, Department of Environmental Systems Science, Institute of Integrative Biology, ETH-Zürich, Zürich 8092, Switzerland.ORCID 0000-0003-1053-8907
Jaime Martínez-ValderramaEstación Experimental de Zonas Áridas, Consejo Superior de Investigaciones Científicas (CSIC), Almería 04120, Spain.ORCID 0000-0001-5859-5674
Fernando T MaestreInstituto Multidisciplinar para el Estudio del Medio 'Ramón Margalef', Universidad de Alicante, Alicante 03690, Spain.ORCID 0000-0002-7434-4856

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Fairy circles (FCs) are regular vegetation patterns found in drylands of Namibia and Western Australia. It is virtually unknown whether they are also present in other regions of the world and which environmental factors determine their distribution. We conducted a global systematic survey and found FC-like vegetation patterns in 263 sites from 15 countries and three continents, including the Sahel, Madagascar, and Middle-West Asia. FC-like vegetation patterns are found in environments characterized by a unique combination of soil (including low nutrient levels and high sand content) and climatic (arid regions with high temperatures and high precipitation seasonality) conditions. In addition to these factors, the presence of specific biological elements (termite nests) in certain regions also plays a role in the presence of these patterns. Furthermore, areas with FC-like vegetation patterns also showed more stable temporal productivity patterns than those of surrounding areas. Our study presents a global atlas of FCs and provides unique insights into the ecology and biogeography of these fascinating vegetation patterns.

Indexed as

Desert ClimateEcologyGeographyPlantsAnimalsdrylandsgrasslandspatial patterns

Identifiers

PMID37748063
PMCPMC10556617

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.