Trophic Relations of Protozoa

  • Johanna Laybourn-Parry
Part of the A Functional Biology of Free-Living Protozoa book series (FBS)


Free-living Protozoa occupy a range of trophic levels. Those which feed on algae, both the unicellular and filamentous varieties, are primary consumers in the herbivore food chain dependent on fresh autotrophic organic matter. Other protozoans exploit bacteria as a food source and as microbivores perform a role in the food chain based on dead organic matter. Both these trophic groups of Protozoa, and other small elements in the micro- and meiofauna, are exploited by predacious protozoan species. The Protozoa form an element in the larger micro- and meiofaunal communities of soils and aquatic environments, but on a smaller scale the various protozoan groups themselves constitute a community with a defined trophic hierarchy (Figure 5.1).


Energy Budget Saturation Density Dead Organic Matter Ciliate Community Trophic Relation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Johanna Laybourn-Parry 1984

Authors and Affiliations

  • Johanna Laybourn-Parry
    • 1
  1. 1.Department of Biological SciencesUniversity of LancasterLancasterUK

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