Microbiome Assembly

Gut Colonization: Succession and Competitive Exclusion

Pioneers
Bacteroides
Firmicutes
Bifidobacteria
Lactobacillus
Generation: 0
Total Bacteria: 0
Species Count: 0
Shannon Index: 0
Stage: Pioneer

Community Composition

Microbial Succession

Gut microbiome assembly follows ecological succession. Pioneers (E. coli, Streptococcus) colonize first, modifying the environment. Later arrivals (Bacteroides, Firmicutes) outcompete pioneers through niche partitioning and competitive exclusion, leading to a stable climax community with high diversity.