Question

Give the range of primary productivity in different ecosystems of the world.

Answer 1

Range of primary productivity in different ecosystems:

1. Tropical rainforests: 2,000–2,500 g/m²/year.
2. Temperate forests: 1,200–1,500 g/m²/year.
3. Grasslands: 500–1,000 g/m²/year.
4. Deserts: 50–200 g/m²/year.
5. Open oceans: 100–150 g/m²/year.
6. Estuaries and coral reefs: 1,500–2,500 g/m²/year.

Primary productivity varies with the availability of sunlight, water, nutrients and temperature.