7.4 Trophic levels in an ecosystem (biology only)

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Question 5
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In a coastal kelp forest ecosystem, the giant kelp (primary producers) produces biomass at a rate of 3500 g m−2 year−13500\text{ g m}^{-2}\text{ year}^{-1}3500 g m−2 year−1.

Assuming an average biomass transfer efficiency of 10% between successive trophic levels, what is the approximate rate of biomass transfer that becomes incorporated into the biomass of secondary consumers?

3.5 g m−2 year−13.5\text{ g m}^{-2}\text{ year}^{-1}3.5 g m−2 year−1

35 g m−2 year−135\text{ g m}^{-2}\text{ year}^{-1}35 g m−2 year−1

350 g m−2 year−1350\text{ g m}^{-2}\text{ year}^{-1}350 g m−2 year−1

3150 g m−2 year−13150\text{ g m}^{-2}\text{ year}^{-1}3150 g m−2 year−1

7.4 Trophic levels in an ecosystem (biology only) Questions

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