Identity of plant, lichen and moss species connects with microbial abundance and soil functioning in maritime Antarctica

Alberto Benavent-González*, Manuel Delgado-Baquerizo, Laura Fernández-Brun, Brajesh K. Singh, Fernando T. Maestre, Leopoldo G. Sancho

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

Background and aims: We lack studies evaluating how the identity of plant, lichen and moss species relates to microbial abundance and soil functioning on Antarctica. If species identity is associated with soil functioning, distributional changes of key species, linked to climate change, could significantly affect Antarctic soil functioning. Methods: We evaluated how the identity of six Antarctic plant, lichen and moss species relate to a range of soil attributes (C, N and P cycling), microbial abundance and structure in Livingston Island, Maritime Antarctica. We used an effect size metric to predict the association between species (vs. bare soil) and the measured soil attributes. Results: We observed species-specific effects of the plant and biocrust species on soil attributes and microbial abundance. Phenols, phosphatase and β-D-cellobiosidase activities were the most important attributes characterizing the observed patterns. We found that the evaluated species positively correlated with soil nutrient availability and microbial abundance vs. bare soil. Conclusions: We provide evidence, from a comparative study, that plant and biocrust identity is associated with different levels of soil functioning and microbial abundance in Maritime Antarctica. Our results suggest that changes in the spatial distribution of these species linked to climate change could potentially entail changes in the functioning of Antarctic terrestrial ecosystems.

Original languageEnglish (US)
Pages (from-to)35-52
Number of pages18
JournalPLANT AND SOIL
Volume429
Issue number1-2
DOIs
StatePublished - Aug 1 2018

Bibliographical note

Publisher Copyright:
© 2018, Springer International Publishing AG, part of Springer Nature.

Keywords

  • Antarctic vegetation
  • Bacteria
  • Fungi
  • qPCR
  • Soil enzyme activities

ASJC Scopus subject areas

  • Soil Science
  • Plant Science

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