Succession · Botany

Which ecological parameter generally decreases as an ecosystem reaches its climax stage?

  1. Net Community Productivity
  2. Total standing biomass
  3. Degree of niche specialization
  4. Soil humus content
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Correct answer: Net Community Productivity

In early succession, Net Community Productivity is high because plants are growing rapidly. In a climax community, the ratio of Gross Production to Respiration (P/R) approaches 1, meaning most energy is used for maintenance rather than new growth.

Difficulty: Medium Question 20 of 20

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