The effect of periodic disturbances and carrying capacity on the significance of selection and drift in complex bacterial communities.

ABSTRACT: Understanding how periodical disturbances affect the community assembly processes is vital for predicting temporal dynamics in microbial communities. However, the effect of dilutions as disturbances are poorly understood. We used a marine bacterial community to investigate the effect of disturbance (+/-) and carrying capacity (high/low) over 50 days in a dispersal-limited 2 × 2 factorial study in triplicates, with a crossover in the disturbance regime between microcosms halfway in the experiment. We modelled the rate of change in community composition between replicates and used this rate to quantify selection and ecological drift. The disturbed communities increased in Bray-Curtis similarity with 0.011 ± 0.0045 (Period 1) and 0.0092 ± 0.0080 day^-1 (Period 2), indicating that se

SUBMITTER: Gundersen MS 

PROVIDER: S-EPMC9723678 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature