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Competition for fluctuating resources reproduces statistics of species abundance over time across wide-ranging microbiotas

Across diverse microbiotas, species abundances vary in time with distinctive statistical behaviors that appear to generalize across hosts, but the origins and implications of these patterns remain unclear. Here, we show that many of these macroecological patterns can be quantitatively recapitulated...

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Detalles Bibliográficos
Autores principales: Ho, Po-Yi, Good, Benjamin H, Huang, Kerwyn Casey
Formato: Online Artículo Texto
Lenguaje:English
Publicado: eLife Sciences Publications, Ltd 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9000955/
https://www.ncbi.nlm.nih.gov/pubmed/35404785
http://dx.doi.org/10.7554/eLife.75168
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author Ho, Po-Yi
Good, Benjamin H
Huang, Kerwyn Casey
author_facet Ho, Po-Yi
Good, Benjamin H
Huang, Kerwyn Casey
author_sort Ho, Po-Yi
collection PubMed
description Across diverse microbiotas, species abundances vary in time with distinctive statistical behaviors that appear to generalize across hosts, but the origins and implications of these patterns remain unclear. Here, we show that many of these macroecological patterns can be quantitatively recapitulated by a simple class of consumer-resource models, in which the metabolic capabilities of different species are randomly drawn from a common statistical distribution. Our model parametrizes the consumer-resource properties of a community using only a small number of global parameters, including the total number of resources, typical resource fluctuations over time, and the average overlap in resource-consumption profiles across species. We show that variation in these macroscopic parameters strongly affects the time series statistics generated by the model, and we identify specific sets of global parameters that can recapitulate macroecological patterns across wide-ranging microbiotas, including the human gut, saliva, and vagina, as well as mouse gut and rice, without needing to specify microscopic details of resource consumption. These findings suggest that resource competition may be a dominant driver of community dynamics. Our work unifies numerous time series patterns under a simple model, and provides an accessible framework to infer macroscopic parameters of effective resource competition from longitudinal studies of microbial communities.
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spelling pubmed-90009552022-04-12 Competition for fluctuating resources reproduces statistics of species abundance over time across wide-ranging microbiotas Ho, Po-Yi Good, Benjamin H Huang, Kerwyn Casey eLife Ecology Across diverse microbiotas, species abundances vary in time with distinctive statistical behaviors that appear to generalize across hosts, but the origins and implications of these patterns remain unclear. Here, we show that many of these macroecological patterns can be quantitatively recapitulated by a simple class of consumer-resource models, in which the metabolic capabilities of different species are randomly drawn from a common statistical distribution. Our model parametrizes the consumer-resource properties of a community using only a small number of global parameters, including the total number of resources, typical resource fluctuations over time, and the average overlap in resource-consumption profiles across species. We show that variation in these macroscopic parameters strongly affects the time series statistics generated by the model, and we identify specific sets of global parameters that can recapitulate macroecological patterns across wide-ranging microbiotas, including the human gut, saliva, and vagina, as well as mouse gut and rice, without needing to specify microscopic details of resource consumption. These findings suggest that resource competition may be a dominant driver of community dynamics. Our work unifies numerous time series patterns under a simple model, and provides an accessible framework to infer macroscopic parameters of effective resource competition from longitudinal studies of microbial communities. eLife Sciences Publications, Ltd 2022-04-11 /pmc/articles/PMC9000955/ /pubmed/35404785 http://dx.doi.org/10.7554/eLife.75168 Text en © 2022, Ho et al https://creativecommons.org/licenses/by/4.0/This article is distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use and redistribution provided that the original author and source are credited.
spellingShingle Ecology
Ho, Po-Yi
Good, Benjamin H
Huang, Kerwyn Casey
Competition for fluctuating resources reproduces statistics of species abundance over time across wide-ranging microbiotas
title Competition for fluctuating resources reproduces statistics of species abundance over time across wide-ranging microbiotas
title_full Competition for fluctuating resources reproduces statistics of species abundance over time across wide-ranging microbiotas
title_fullStr Competition for fluctuating resources reproduces statistics of species abundance over time across wide-ranging microbiotas
title_full_unstemmed Competition for fluctuating resources reproduces statistics of species abundance over time across wide-ranging microbiotas
title_short Competition for fluctuating resources reproduces statistics of species abundance over time across wide-ranging microbiotas
title_sort competition for fluctuating resources reproduces statistics of species abundance over time across wide-ranging microbiotas
topic Ecology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9000955/
https://www.ncbi.nlm.nih.gov/pubmed/35404785
http://dx.doi.org/10.7554/eLife.75168
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