If you need an accessible version of this item please contact JSTOR User Support

Elements of a Theory for the Mechanisms Controlling Abundance, Diversity, and Biogeochemical Role of Lytic Bacterial Viruses in Aquatic Systems

T. Frede Thingstad
Limnology and Oceanography
Vol. 45, No. 6 (Sep., 2000), pp. 1320-1328
Stable URL: http://www.jstor.org/stable/2670525
Page Count: 9
  • Download PDF
  • Cite this Item

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If you need an accessible version of this item please contact JSTOR User Support
Elements of a Theory for the Mechanisms Controlling Abundance, Diversity, and Biogeochemical Role of Lytic Bacterial Viruses in Aquatic Systems
Preview not available

Abstract

Mechanisms controlling virus abundance and partitioning of loss of bacterial production between viral lysis and protozoan predation are discussed within the framework of an idealized Lotka-Volterra-type model. This combines nonselective protozoan predation with host-selective viral lysis of bacteria. The analysis leads to a reciprocal relationship between bacterial diversity and viruses, in which coexistence of competing bacterial species is ensured by the presence of viruses that "kill the winner," whereas the differences in substrate affinity between the coexisting bacterial species determine viral abundance. The ability of the model to reproduce published observations, such as an approximate 1:10 ratio between bacterial and viral abundance, and the ability of viral lysis to account for 10-50% of bacterial loss are discussed.

Page Thumbnails

  • Thumbnail: Page 
1320
    1320
  • Thumbnail: Page 
1321
    1321
  • Thumbnail: Page 
1322
    1322
  • Thumbnail: Page 
1323
    1323
  • Thumbnail: Page 
1324
    1324
  • Thumbnail: Page 
1325
    1325
  • Thumbnail: Page 
1326
    1326
  • Thumbnail: Page 
1327
    1327
  • Thumbnail: Page 
1328
    1328