Advertisement

Marine Biology

, Volume 22, Issue 2, pp 97–104 | Cite as

Potential trophic biomasses and trace-substance concentrations in unstructured marine food webs

  • J. D. Isaacs
Article

Abstract

It is proposed that unstructured food webs may more closely resemble real marine food webs than does the conventional, structured model. An unstructured food-web model leads to a set of very simple expressions for the potential partition of matter in the food web in steady state, including the potential fluxes of material and biomasses of trophic types and the concentration of trace substances in the members and materials of such a food web. The approach may explain some anomalies of relative predator-prey biomasses and of trace-element distribution, and may be of further use for analyzing and predicting (a) the tropho-dynamic parameters of marine systems, (b) the trophic positions, and the steadystate fluxes and biomasses of marine organisms, (c) the distribution of trace materials in marine biota; and for relating findings among these areas. Other matters, such as limitations of food conversion, indicated by concentration factors of trace substances, the possibilities of non-causal association of anomalously high levels of trace substances (including pollutants) with diseased or otherwise abnormal marine creatures, and an inverse relationship of early concentrations of newly introduced trace substances and their eventual concentrations in various organisms, are also developed in this approach.

Keywords

Biomass Marine Biota Concentration Factor Marine Organism Trophic Position 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Literature Cited

  1. Allen, G. and W. Aron: Food of the salmonid fishes of the western North Pacific Ocean. Spec. scient. Rep. U.S. Fish Wildl. Serv. (Fish.) 237, 1–11 (1957).Google Scholar
  2. Alverson, F. G.: The food of yellowfin and skipjack tunas in the eastern tropical Pacific Ocean. Bull. inter-Am. trop. Tuna. Commn 7, 295–396 (1963).Google Scholar
  3. Blackburn, M.: Relationships between standing crops at three successive trophic levels in the Eastern Tropical Pacific. Pacif. Sci. 20, 36–59 (1966).Google Scholar
  4. Isaacs, J. D.: Unstructured marine food webs and “pollutant analogues”. Fish. Bull. U.S. 70, 1053–1059 (1972).Google Scholar
  5. Lowman, F. D., T. R. Rice and F. A. Richards: Accumulation and redistribution of radionuclides by marine organisms. In: Radioactivity in the marine environment, pp 161–199. Washington, D.C.: National Academy of Sciences 1971Google Scholar
  6. National Academy of Sciences: Disposal of low-level radioactive waste into Pacific coastal water. Publs natn. Res. Counc., Wash. 985, 1–87 (1962).Google Scholar
  7. Robertson, D. E., L. A. Rancitelli, J. C. Langford and R. W. Perkins: Battelle-Northwest contribution to the IDOE base-line study. In: Baseline studies of pollutants in the marine environment (heavy metals, halogenated hydrocarbons and petroleum), pp 231–274. New York: Brookhaven National Laboratory 1972.Google Scholar
  8. Vinogradov, M. E. and N. M. Voronina: Quantitative distribution of plankton in the upper layers of the Pacific Equatorial currents. Trudy Inst. Okeanol. [transl. from Russ. and available from Scripps Institution of Oceanography], 71, 22–59 (1963)Google Scholar
  9. Whitney, R. R.: The Bairdiella, Bairdiella icistius (Jordan & Gilbert). Calif. Fish Game Fish Bull. 113, 105–151 (1961).Google Scholar
  10. Young, D.: The distribution of cesium, rubidium and potassium in the quasi-marine ecosystem of the Salton Sea, PhD dissertation. University of California, San Diego 1970. (Partly summarized in Isaacs, 1972).Google Scholar

Copyright information

© Springer-Verlag 1973

Authors and Affiliations

  • J. D. Isaacs
    • 1
  1. 1.Scripps Institution of OceanographyUniversity of CaliforniaLa JollaUSA

Personalised recommendations