Thursday, November 1, 2012

Chapter outline: Heterotrophic Planktonic Microbes: Virus, Bacteria, Archaea, and Protozoa


Heterotrophic Planktonic Microbes: Virus, Bacteria, Archaea, and Protozoa

Jed A. Fuhrman & David A. Caron, University of Southern California, CA, USA.


3.1. Background (historical development)

3.1.1       Microbial ecology into the 1970s

3.1.2       The microbial loop revolution. {BOX 1 “bacterial” biomass and production: definitions and approaches}}

3.1.3       Geographic and temporal distributions of microbial biomass and activity {BOX 2 The changing and complex world of protistan phylogeny}

3.2. Biodiversity: influence of molecular tools

3.2.1 Bacteria and Archaea

         3.2.1.1 “Culturable” cells.

            3.2.1.2 “Nonculturables.”  {BOX3 Molec Phyogeny and Field Methods}

           3.2.1.2.1. SAR11 and picophytoplankton

        3.2.1.2.2 Archaea

                 3.2.1.2.3 . Other rRNA clone types

3.2.1          Gene diversity, without cultivation

               3.2.1.2.4. Dilution Culture
 
3.2.2 Protozoa

3.2.2.1  Morphological vs. molecular identification and diversity of protists

3.2.2.2  Life histories and ecological strategies of protozoa

3.2.3       Viruses –

3.2.3.1  Viruses and diversity. 

                   3.2.3.2. Viruses and the Microbial Loop

3.3. Major environmental controls

 3.3.1 Temperature and Pressure

  3.3.2 Dissolved and Particulate Organic Matter

            3.3.3 Inorganic nutrients

            3.3.3.1 Macronutrients (N,P). 

              3.3.3.2 Micronutrients (trace metals, growth factors).

3.3.4 Oxygen

3.4. Major biotic controls

 3.4.1  Predation and top-down controls

   3.4.1.1 The trophic activities of protozoa BOX #4: Measuring protozoan trophic activity

                  3.4.1.2  Bacterial predation

3.4.2  Competition, Alleopathy and Symbiosis (mutualism, parasitism, commensalisms)

3.5.  Community budget: production and losses among microorganisms

          3.5.1 Growth efficiency.

          3.5.2       Balance between growth and removal

3.5.3  The microbial loop revisited.

3.6  Export to other trophic compartments and toward deep waters

3.6.1  The Link-Sink Debate

3.6.2  Sinking of ‘microbial carbon’ {AND the MICROBIAL CARBON PUMP?}

3.6  Theoretical considerations and Future Trends

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