Developm
Microbiologyprocedure.com Community Toolbar Download ImageSubmit Your College, Institute, Company, Products for FREE
  Home  Link to us  DirectoryNEW  Site map  Search  Language

Index >> Fundamentals of Microbial Ecology >> Development of Microbial Communities

Development of Microbial Communities

Development of Microbial Communities
Community is the highest biological unit in a biological hierarchy made up of individuals and populations. A microbial community is a integrated assemblage of microbial populations occurring and interacting with a given location called a habitat. Study of community is called synecology. Study of the individual population is called autecology. Communities vary greatly in the number of species they contain (species-a group of organisms with a common gene pool).

Diversity
The heterogenecity of an ecosystem is the diversity. The variety of organisms occurring together in a biological community signifies diversity. Communities are usually-characterised by a high state of diversity.

Diversity is related to the complexity of the food web of a community. Food energy can move through a community by a multitude of pathways if the community is diverse. If it is simple, the loss of one or few key species could cause profound changes or even collapse. Similarly, the abnormal rise in the key species may cause an immediate rise in the population of its predator, particularly if it has only one predator that is very narrow in its food requirements.

Biological communities usually contain a few species with many individuals and many species with few individuals. Although a few dominant species normally account for most of the energy flow within a trophic level, the less abundant species determine, in large part, the species diversity of that trophic level and of the whole community. Diversity generally decreases when one or few populations attain high numbers. High numbers signify successful competition and dominance by a single population.

 

Home | Site map | Submit Article | Directory | Search