Chapter 9 Microbial ecology.ppt

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 anisms.
Microbial ecology is the the study of the behavior and activities of anisms in their natural environments.
Environmental microbiology, parison, 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 anisms actually are functioning, but with the broader-scale effects of microbial presence and activities.
anisms in nature ecosystem
Microbial population interactions
Biogeochemical cycles
Plant-microbe interactions
Bioremediation
Chapter 9 Microbial Ecology
anisms in nature ecosystem
1. anisms and microenvironment
2. Terrestrial Environments
3. Freshwater Environments
4. Marine Environments
anisms and microenvironment
populations
guilds
communities
ecosystem
Metabolically related populations constitute groupings called guilds.
Sets of guilds plementary physiological processes interact to form munities.
In a microbial ecosystem individual cells grow to form populations.
Community 3
munities then interact munities of anisms to define the entire ecosystem.