All Flashcards
What are the basic steps in calculating NPP?
- Measure GPP (total energy captured). 2. Measure respiration (energy used by producers). 3. Subtract respiration from GPP: NPP = GPP - Respiration.
What is the effect of increased sunlight on GPP?
Increased sunlight can increase GPP, leading to higher NPP.
What is the effect of higher temperatures on GPP?
Up to a certain point, higher temperatures can increase GPP.
What is the effect of increased water availability on GPP?
Increased water availability can increase GPP, especially in water-limited ecosystems.
What is the effect of increased nutrients on GPP?
Increased nutrients can increase GPP, especially in nutrient-limited ecosystems.
What is Gross Primary Productivity (GPP)?
Total energy captured by producers through photosynthesis.
What is Net Primary Productivity (NPP)?
Energy remaining after producers use some for respiration; energy available to other organisms.
What is respiration in plants?
Process by which plants use captured energy for their own needs, releasing some as heat.