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Question
What is the primary productivity of an ecosystem and how is it expressed?
Solution
Primary production is defined as the amount of biomass or organic matter produced per unit area over a time period by plants during photosynthesis. It is expressed in terms of weight (g–2) or energy (kcal m–2)
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| Tropic level | Net Production(KJm-2y-1) | Respiration (KJm-2y-1) |
| Top Carnivore | 50 | 35 |
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| Herbivores | 4490 | 4041 |
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