An arctic tundra has a net primary productivity of 100 g m2 yr1 of C. Herbivores in the system ingest 33 g m2 yr of C, but then lose 26 g m2 yr1 of C through egestion and respiration, yielding an actual herbivore productivity of 5 g m2 yr 1. What is the trophic efficiency (as a percentage) for this system? -1 Your Answer: Answer

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Energy Flow

Energy flow is the continuous and directional flow of energy through living beings within an ecosystem. All living beings can be segregated into producers and consumers. These producers and consumers can be further divided in a food chain. The term ‘trophic level’ is assigned to each level of the food chain.