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 (mĕz′ə-kŏz′əm, mĕs′-)
A biological system that contains the physical features and organisms of an ecosystem but is restricted in size or scope for use in conducting scientific experiments.

[meso- + -cosm (as in microcosm macrocosm).]
References in periodicals archive ?
After describing the tiered approach to evaluation, nine chapters outline the uses and environmental properties of atrazine, toxicity, exposure, species sensitivity, microcosm and mesocosm studies, and risk mitigation.
Predation on fish larvae as a regulatory force, illustrated in mesocosm studies with large groups of larvae.
Glass microscope slides, on which biofilms could attach, were placed into each mesocosm immediately before adding the carbaryl.
The cathedral thus depicts a self-divided mesocosm miming both macrocosmic and microcosmic splits as it tropes the various theomachias, cosmomachias, and psychomachias waged in Gothic fiction.
We manipulated sediment access and fish size during two mesocosm experiments to determine how these factors could alter the effects of gizzard shad on phytoplankton.
One of the first of these was Brawley and Adey's (1981) demonstration that, in a coral-reef mesocosm, filamentous algal turfs gave way to dominance by red macroalgae after introduction of the grazing amphipod Ampithoe raimondi.
In this small town outside of Wilmington, teachers and students have traded their traditional Bunsen burners for an enclosed living laboratory--a futuristic world called a mesocosm.
In fact, he views fisheries as a mesocosm of many complex scientifically based policy issues.
Two research groups, Sphere and Ecobe, have built a large mesocosm facility on the Campus Drie Eiken of the University of Antwerp.
Between June and September 2013, the prey selections of green crabs were documented using mesocosm feeding experiments and green crab diet through stomach content analyses.