Ecological clusters of soil taxa within bipartite networks are highly sensitive to climatic conditions in global drylands

Author:

Pescador David S.12ORCID,Delgado-Baquerizo Manuel34,Fiore-Donno Anna Maria5,Singh Brajesh K.67,Bonkowski Michael5,Maestre Fernando T.89

Affiliation:

1. Departamento de Farmacología, Farmacognosia y Botánica, Facultad de Farmacia, Universidad Complutense de Madrid, Madrid, Spain

2. Departamento de Biología y Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos, Móstoles, Madrid, Spain

3. Laboratorio de Biodiversidad y Funcionamiento Ecosistémico, ‌Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS), CSIC, Av. Reina Mercedes 10, E-41012, Sevilla, Spain

4. Unidad Asociada CSIC-UPO (BioFun), Universidad Pablo de Olavide, 41013 Sevilla, Spain

5. Department of Biology, Institute of Zoology, University of Cologne, 50674 Cologne, Germany

6. Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia

7. Global Centre for Land-Based Innovation, Western Sydney University, Penrith, NSW, Australia

8. Instituto Multidisciplinar para el Estudio del Medio ‘Ramón Margalef’, Universidad de Alicante, San Vicente del Raspeig, Spain

9. Departamento de Ecología, Universidad de Alicante, San Vicente del Raspeig, Spain

Abstract

Determining the influence of climate in driving the global distribution of soil microbial communities is fundamental to help predict potential shifts in soil food webs and ecosystem functioning under global change scenarios. Herein, we used a global survey including 80 dryland ecosystems from six continents, and found that the relative abundance of ecological clusters formed by taxa involved in bacteria-fungi and bacteria-cercozoa bipartite networks was highly sensitive to changes in temperature and aridity. Importantly, such a result was maintained when controlling for soil, geographical location and vegetation attributes, being pH and soil organic carbon important determinants of the relative abundance of the ecological clusters. We also identified potential global associations between important soil microbial taxa, which can be useful to support the conservation of terrestrial ecosystems under global change scenarios. Our results suggest that increases in temperature and aridity such as those forecasted for the next decades in drylands could potentially lead to drastic changes in the community composition of functionally important bipartite networks within soil food webs. This could have important but unknown implications for the provision of key ecosystem functions and associated services driven by the organisms forming these networks if other taxa cannot cope with them. This article is part of the theme issue ‘Ecological complexity and the biosphere: the next 30 years’.

Funder

Generalitat Valenciana

Australian Research Council

Ministerio de Ciencia e Innovación

Junta de Andalucía

Ministerio de Economía y Competitividad

H2020 European Research Council

Publisher

The Royal Society

Subject

General Agricultural and Biological Sciences,General Biochemistry, Genetics and Molecular Biology

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