the most interesting efficiencies are those referred to the previous level’s productivity […]. These latter may be termed the progressive efficiencies of the various food-cycle levels, indicating for each level the degree of utilization of its potential food supply or energy source.
Result of Your Query
food-cycle leveltrophische Eben (ger.)
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Any of a hierarchy of levels of an ecosystem, each consisting of organisms sharing the same function in the food-web, and the same relationship to the primary producers. (OED)
- 1942
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Lindeman, R.L. (1942). The trophic-dynamic aspect of ecology. Ecology 23, 399-417: 407.