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Productivity in terrestrial ecosystems i...

Productivity in terrestrial ecosystems is affected by

A

temperature

B

light intensity

C

availability of nutrients and water

D

All of these

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding Productivity**: - Productivity in ecosystems refers to the rate at which biomass is produced. It is a measure of how much organic matter is generated in a given area over a specific time period. 2. **Types of Productivity**: - There are two main types of productivity: - **Primary Productivity**: This is the rate at which plants (producers) create biomass through photosynthesis. It is measured in terms of the amount of organic matter produced per unit area over time. - **Secondary Productivity**: This refers to the rate at which consumers (herbivores and carnivores) generate new organic matter by consuming the biomass produced by plants. 3. **Factors Affecting Productivity**: - Several environmental factors influence productivity in terrestrial ecosystems: - **Temperature**: Affects the metabolic rates of plants and the efficiency of photosynthesis. - **Light Intensity**: Essential for photosynthesis; higher light intensity generally increases productivity. - **Availability of Nutrients**: Nutrients such as nitrogen, phosphorus, and potassium are crucial for plant growth and biomass production. - **Water Availability**: Water is vital for photosynthesis and overall plant health; insufficient water can limit productivity. 4. **Conclusion**: - Given that productivity is influenced by temperature, light intensity, availability of nutrients, and water, the correct answer to the question is that productivity in terrestrial ecosystems is affected by **all of these factors**. **Final Answer**: Productivity in terrestrial ecosystems is affected by temperature, light intensity, availability of nutrients, and water – all of these factors. ---
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