Microbial loop

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Introduction

Electron micrograph of the Ebola Zaire virus. This was the first photo ever taken of the virus, on 10/13/1976. By Dr. F.A. Murphy, now at U.C. Davis, then at the CDC.

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Legend/credit: Electron micrograph of the Ebola Zaire virus. This was the first photo ever taken of the virus, on 10/13/1976. By Dr. F.A. Murphy, now at U.C. Davis, then at the CDC.
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The microbial loop is a depiction of the microbial food web. The pathway starts with dissolved organic matter (DOM) which makes its way through various trophic levels ultimately to the highest trophic levels. This is relevant in aquatic and soil systems. Organisms involved in the marine microbial loop include DOM, bacteria, micro flagellates and ciliates, phytoplankton and various other nutrient cycling bacteria. (+++) The microbial loop is ecologically significant because it is directly involved in nutrient cycling and primary production of biomass ultimately effecting large-scale ecological functions.

Biological interaction

Provide details of the symbiosis or biological interaction. Is this a specific or general interaction? How do these interactions influence the host or other microbial populations, and their activities? How do these interactions influence other organisms (positive or negative influences)? What is the outcome of this interaction? Are there ecological consequences? Describe biological interactions using as many sections/subsections as you require. Look at other topics available in MicrobeWiki. Create links where relevant.

Niche

Describe the physical, chemical, or spatial characteristics of the niche where we might find this interaction, using as many sections/subsections as you require. Look at other topics available in MicrobeWiki. Create links where relevant.

Microbial processes

What microbial processes are important for this microbial interaction? Does this microbial interaction have some ecosystem-level effects? Does this interaction affect the environment in any way? Describe critical microbial processes or activities that are important in this interaction, adding sections/subsections as needed. Look at other topics in MicrobeWiki. Are some of these processes already described? Create links where relevant.

Key Microorganisms

What specific kinds of microbes are typically involved in this interaction? Or associated with important processes? Describe key groups (genera, species) of microbes that we find in this environment, and any special adaptations they may have evolved to survive in this environment. List examples of specific microbes that represent key groups or are associated with important processes found in this environment. Add sections/subsections as needed. Look at other microbe listings in MicrobeWiki. Are some of the groups of microbes from your environment already described? Create links to other MicrobeWiki pages where possible.

Current Research

Enter summaries of recent research here--at least three required

References

1. Azam F, Fenchel T, Field JG, Gray JS, Meyer-Reil LA, Thingstad F. (1983). “The ecological role of water-column microbes in the sea”. Marine Ecology Progress Series. 10: 257-263.

2. Bonkowski M. (2003). “Protozoa and plant growth: the microbial loop in soil revisited”. Tansley Review. 617-631.

3. Fenchel T. (2008). “The microbial loop – 25 years later”. Journal of Experimental Marine Biology and Ecology. 99-103.

4. Stone, Richard (June 18, 2010). "Marine Biogeochemistry: The Invisible Hand Behind A Vast Carbon Reservoir". Science Magazine. doi:10.1126/science.328.5985.1476.

Edited by Nathan Bohne, a student of Angela Kent at the University of Illinois at Urbana-Champaign.