Net production efficiency in an ecosystem can be calculated as

Asked by admin @ in Biology viewed by 258 People

Net production efficiency (NPE) is defined as the product of 100 and the quotient of net consumer productivity and assimilation. If the invertebrate primary consumers of an ecosystem exhibit a NPE of about 20% and pass on about 1000 kcal/m2/yr to secondary consumers, what is the assimilation of the primary consumers?

A. 1000 kcal/m2/yrB. 2000 kcal/m2/yrC. 5000 kcal/m2/yr

Answered by admin @


Answer:

The assimilation of the primary consumer is 5000 kcal/m2/yr, option C.

Explanation:

From the information in the question, the Net Production Efficiency, NPE can be calculated using 100Cp/AS.

Where CP is the consumer productivity and AS is the Assimilation.

Therefore, 20 = 100 x 1000/AS

AS = 100,000/20 = 5000 kcal/m2/yr. Option C.


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