Structured environments foster competitor coexistence by manipulating interspecies interfaces

Area of Science:

• Ecology
• Microbiology
• Theoretical Biology

Background:

• Microbial communities in natural environments face interspecies competition.
• Physical structures may stabilize these competing species.
• Previous work suggests environmental structures can prevent competitive exclusion.

Purpose of the Study:

• To investigate how physical structures influence interspecies competition in microbial communities.
• To model the stabilizing effects of environmental structures on ecological networks.
• To explore the relationship between physical structure scale and species diversity.

Main Methods:

• Utilized Lotka-Volterra models to simulate interspecies competition.
• Analyzed the localization of competition to physical structures.
• Examined the correlation between physical structure length-scale and competitive fitness distribution.

Main Results:

• Interfacial competition localizes to physical structures, stabilizing ecological networks.
• Stable communities show an inverse correlation between structure length-scale and competitive fitness width.
• Finer physical structures can sustain a wider range of interspecific competition.

Conclusions:

• Physical structures play a crucial role in stabilizing microbial community dynamics.
• Environmental structure scale influences the diversity of competing species.
• Findings provide a basis for engineering structures to manage microbial communities for various applications.