In a microbial ecosystem individual cells grow to form populations Metabolically related populations constitute groupings called guilds Sets of guilds conducting complementary physiological processes interact to form microbial communities
Metabolically related populations constitute groupings called guilds. Sets of guilds conducting complementary physiological processes interact to form microbial communities. In a microbial ecosystem individual cells grow to form populations
O○○ O○ ○ Individual Population
Community 2 Community 1 Oxic zone- Photic zone Chemoorganotrophic cyanobacteria and algae bacteria CH1206+602→ 6CO2+6H2O一 6C02+6H2O cH12O6+602 Sediments Anoxic zone
Community 3 1. Guild 1: methanogenic bacteria(CO2-CH4) homoacetogenic bacteria(CO2- acetate) 2. Guild 2: sulfate-reducing bacteria(S0,2- +H2S) sulfur-reducing bacteria(S→H 3. Guild 3: denitrifying bacteria(NO, N2) ferric iron-reducing bacteria (Fe→Fe2) 4. Guild 4: fermentative bacteria(fermenting sugars amino and fatty acids, Community 3 and so on) Sediments
Community 3
Microbial communities then interact with communities of macroorganisms to define the entire ecosystem
Microbial communities then interact with communities of macroorganisms to define the entire ecosystem