Cross-domain interactions confer stability to benthic biofilms in proglacial streams

Busi, Susheel Bhanu ORCID: https://orcid.org/0000-0001-7559-3400; Peter, Hannes; Brandani, Jade; Kohler, Tyler J.; Fodelianakis, Stilianos; Pramateftaki, Paraskevi; Bourquin, Massimo; Michoud, Grégoire; Ezzat, Leïla; Lane, Stuart; Wilmes, Paul; Battin, Tom J.. 2024 Cross-domain interactions confer stability to benthic biofilms in proglacial streams. Frontiers in Microbiomes, 2, 1280809. 11, pp. 10.3389/frmbi.2023.1280809

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Abstract/Summary

Cross-domain interactions are an integral part of the success of biofilms in natural environments but remain poorly understood. Here, we describe cross-domain interactions in stream biofilms draining proglacial floodplains in the Swiss Alps. These streams, as a consequence of the retreat of glaciers, are characterised by multiple environmental gradients and perturbations (e.g., changes in channel geomorphology, discharge) that depend on the time since deglaciation. We evaluate co-occurrence of bacteria and eukaryotic communities along streams and show that key community members have disproportionate effects on the stability of community networks. The topology of the networks, here quantified as the arrangement of the constituent nodes formed by specific taxa, was independent of stream type and their apparent environmental stability. However, network stability against fragmentation was higher in the streams draining proglacial terrain that was more recently deglaciated. We find that bacteria, eukaryotic photoautotrophs, and fungi are central to the stability of these networks, which fragment upon the removal of both pro- and eukaryotic taxa. Key taxa are not always abundant, suggesting an underlying functional component to their contributions. Thus, we show that there is a key role played by individual taxa in determining microbial community stability of glacier-fed streams.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.3389/frmbi.2023.1280809
UKCEH and CEH Sections/Science Areas:	Soils and Land Use (Science Area 2017-)
ISSN:	2813-4338
Additional Information. Not used in RCUK Gateway to Research.:	Open Access paper - full text available via Official URL link.
Additional Keywords:	glacier-fed streams, cross-domain interactions, networks, community fragmentation, microbiome
NORA Subject Terms:	Ecology and Environment Hydrology
Related URLs:	Dataset
Date made live:	12 Jan 2024 11:18 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/536642

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