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Plant and Soil

, Volume 434, Issue 1–2, pp 481–489 | Cite as

Ionomics suggests niche differences between sympatric heathers (Ericaceae)

  • Yohan PillonEmail author
  • Daniel Petit
  • Christelle Gady
  • Marilyne Soubrand
  • Emmanuel Joussein
  • Gaëlle Saladin
Regular Article

Abstract

Background and aims

The co-existence of large number of competing plant species with the same basic needs is a major question in ecology, particularly when this involves closely related species.

Methods

We investigated the ecology of six heather species (Calluna vulgaris & Erica spp., Ericaceae) able to cohabit in the same heathlands. We characterised the ionome, i.e. the mineral composition of the plants using a sampling strategy specifically designed to control for soil effects. Nine plant communities in Limousin, France, were investigated, representing eight combinations of different species, on serpentine and non-serpentine substrates.

Results

Ionome was influenced by both taxonomic and environmental factors with significant interactions between them. We found that species growing in sympatry had distinct ionomic profiles, i.e. they differ in their leaf mineral content, suggesting different nutritional strategies. Different mycorrhizal associations may be hypothesised to explain these different chemical signatures.

Conclusions

Differential use of the soil nutrients could explain the co-existence of closely related species. It may also explain the diversity of certain shrubby ecosystems or large shrubby genera such as Erica. Ionomics is therefore a promising tool for ecological studies in non-model organisms.

Keywords

Heathland Ionome Ericoid mycorrhiza Serpentine Ultramafic 

Notes

Acknowledgements

We thank Fabienne Nauwynck (Conservatoire d’Espaces Naturels du Limousin) and Laurent Chabrol (Conservatoire Botanique National du Massif Central) for their help in the selection of the sites. We thank Tanguy Jaffré for discussion and Sylvain Merlot (CNRS I2BC) who pointed to several key bibliographic references, the editor and four anonymous reviewers for constructive comments. This study was supported by a grant of the French Botanical Society.

Supplementary material

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11104_2018_3870_MOESM2_ESM.xlsx (14 kb)
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11104_2018_3870_MOESM3_ESM.xlsx (60 kb)
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Copyright information

© Springer Nature Switzerland AG 2018

Authors and Affiliations

  1. 1.LSTM, IRD, INRA, CIRAD, Montpellier SupAgroUniversity of MontpellierMontpellierFrance
  2. 2.PEREINE, EA7500Université de LimogesLimoges cedexFrance

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