华中农业大学：《食品微生物学》课程PPT教学课件（Food Microorganism）Chapter 9 Microbial Ecology

Chapter 9 Microbial Ecology Microbial ecology = ? Environmental microbiology The term microbial ecology is now used in a general way to describe the presence and distributions of microorganisms. Microbial ecology is the the study of the behavior and activities of microorganisms in their natural environments

Chapter 9 Microbial Ecology Microbial ecology = ? Environmental microbiology The term microbial ecology is now used in a general way to describe the presence and distributions of microorganisms. Microbial ecology is the the study of the behavior and activities of microorganisms in their natural environments

Environmental microbiology, in comparison, relates primarily to all- over microbial processes that occur in a soil, water or food, as examples. It is not concerned with the particular microenvironment where the microorganisms actually are functioning, but with the broader-scale effects of microbial presence and activities

Environmental microbiology, in comparison, relates primarily to all- over microbial processes that occur in a soil, water or food, as examples. It is not concerned with the particular microenvironment where the microorganisms actually are functioning, but with the broader-scale effects of microbial presence and activities

9.1 Microorganisms in nature ecosystem 9.2 Microbial population interactions 9.3 Biogeochemical cycles 9.4 Plant-microbe interactions 9.5 Bioremediation Chapter 9 Microbial Ecology

9.1 Microorganisms in nature ecosystem 9.2 Microbial population interactions 9.3 Biogeochemical cycles 9.4 Plant-microbe interactions 9.5 Bioremediation Chapter 9 Microbial Ecology

9.1 Microorganisms in nature ecosystem 1. Microorganisms and microenvironment 2. Terrestrial Environments 3. Freshwater Environments 4. Marine Environments

9.1 Microorganisms in nature ecosystem 1. Microorganisms and microenvironment 2. Terrestrial Environments 3. Freshwater Environments 4. Marine Environments

9.1.1 Microorganisms and microenvironment populations guilds communities ecosystem

9.1.1 Microorganisms and microenvironment populations guilds communities ecosystem

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

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

Individual Population

Community 2 Community 1 Oxic zone- Photic zone- Chemoorganotrophic cyanobacteria and algae bacteria C6H1206+602一→ 6C02+6H0→ 6C02+6H20 C6H1206+602 Sediments Anoxic zone

Community 3

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