Does diversity beget diversity in microbiomes?

Abstract:

:Microbes are embedded in complex communities where they engage in a wide array of intra- and inter-specific interactions. The extent to which these interactions drive or impede microbiome diversity is not well understood. Historically, two contrasting hypotheses have been suggested to explain how species interactions could influence diversity. 'Ecological Controls' (EC) predicts a negative relationship, where the evolution or migration of novel types is constrained as niches become filled. In contrast, 'Diversity Begets Diversity' (DBD) predicts a positive relationship, with existing diversity promoting the accumulation of further diversity via niche construction and other interactions. Using high-throughput amplicon sequencing data from the Earth Microbiome Project, we provide evidence that DBD is strongest in low-diversity biomes, but weaker in more diverse biomes, consistent with biotic interactions initially favouring the accumulation of diversity (as predicted by DBD). However, as niches become increasingly filled, diversity hits a plateau (as predicted by EC).

journal_name

Elife

journal_title

eLife

authors

Madi N,Vos M,Murall CL,Legendre P,Shapiro BJ

doi

10.7554/eLife.58999

subject

Has Abstract

pub_date

2020-11-20 00:00:00

issn

2050-084X

pii

58999

journal_volume

9

pub_type

杂志文章

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