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The influence of natural perturbation on protozoan communities inhabiting artificial substrates
Cairns, Jr., J.; Kaesler, R.L.; Kuhn, D.L.; Plafkin, J.L.; Yongue Jr., W.H. (1976). The influence of natural perturbation on protozoan communities inhabiting artificial substrates. Trans. Am. Microsc. Soc. 95(4): 646-653
In: Transactions of the American Microscopical Society. Blackwell Publishing: Lawrence, Kan., etc.,. ISSN 0003-0023, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Cairns, Jr., J.
  • Kaesler, R.L.
  • Kuhn, D.L.
  • Plafkin, J.L.
  • Yongue Jr., W.H.

Abstract
    Polyurethane artificial substrates were positioned in a substrate- associated transect through littoral, sublittoral, and profundal sediments of Douglas Lake, Michigan. Substrates were also suspended in a vertical transect within the epilimnetic open water. Cluster analysps of spp composition and statistical comparisons of spp numbers indicated that distinct protozoan communities develop on each substrate, all manifesting characteristics of interactive equilibrium. The large differences in pre-overturn spp numbers and compositions between littoral-sublittoral sediments, profundal muds, and open waters clearly illustrate the distinctive nature of these environments in Douglas Lake. Following the major perturbation (autumnal overturn), there was a breakdown of competitive interactions with noninteractive colonization dynamics apparently determining the nature of each assemblage.

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