Article ; Online: Stochasticity causes high β‐diversity and functional divergence of bacterial assemblages in closed systems
Ecology. 2023 Apr., v. 104, no. 4 p.e4005-
2023
Abstract: Stochasticity is a major cause of compositional β‐diversity in communities that develop under similar environmental conditions. Such communities may exhibit functional similarity due to sympatric taxa with equivalent metabolic capacities in the source ... ...
| Abstract | Stochasticity is a major cause of compositional β‐diversity in communities that develop under similar environmental conditions. Such communities may exhibit functional similarity due to sympatric taxa with equivalent metabolic capacities in the source assemblage. However, the redundancy of individual physiological traits may differ in the original source community, which in turn might lead to more or less pronounced variability of single functions among newly formed communities. We analyzed the degree of stochasticity during the primary assembly of bacterial communities originating from the same source and growing under identical conditions. We tested the links between community composition and functioning in parallel microcosms containing glucose and its dimer cellobiose. Bacteria from prefiltered lake water were diluted in artificial lake water and grown to the stationary phase. The resulting assemblages exhibited high compositional variability of taxa that were rare in the source communities. Simulations showed that the observed richness and incidence‐based β‐diversity could be reproduced by dispersal limitation, or by low dispersal rates associated with the ecological drift of the colonizers. Further null model analysis supported an important influence of stochasticity, as well as a synergy between dispersal limitation and both, heterogeneous and homogeneous selection. The communities functionally differed and the magnitude of functional variability depended on the substrate: more communities consumed glucose than cellobiose. However, there was no relationship between community structure and growth kinetics or substrate consumption. Thus, both structural and functional variability may be a consequence of stochastic processes during initial colonization in closed microbial communities. |
|---|---|
| Keywords | cellobiose ; community structure ; glucose ; growth models ; lakes ; sympatry |
| Language | English |
| Dates of publication | 2023-04 |
| Publishing place | John Wiley & Sons, Inc. |
| Document type | Article ; Online |
| Note | JOURNAL ARTICLE |
| ZDB-ID | 1797-8 |
| ISSN | 0012-9658 |
| ISSN | 0012-9658 |
| DOI | 10.1002/ecy.4005 |
| Database | NAL-Catalogue (AGRICOLA) |
Full text online
More links
Kategorien
In stock of ZB MED Bonn / Germany
| Z 4' 49/37: Show issues | ||||
| Z 7543: Show issues |
Order via subito
This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.
Inter-library loan at ZB MED
Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.