Abstract

Food web ecology has the potential as an integrating concept to unify perspectives in above-ground and below-ground ecology. A typical food web, particularly in arid lands, has 7–8 membered food chains embedded in the food web. By viewing soil systems holistically, including such microfauna as protists, and mesofauna (nematodes), there are ample supplies of biota (food) to enable longer food chains to exist. Thus production efficiencies can be up to 70%. Trophic transfer efficiencies, often thought of as maximal at 10%, can be up to 20%, particularly in such soil “hot spots” as rhizospheres and drilospheres.

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