Biotic Interactions & Transfer of Energy
Key points:
- Primary producers (usually plants and other photosynthesizers) are the gateway for energy to enter food webs.
- Productivity is the rate at which energy is added to the bodies of a group of organisms (such as primary producers) in the form of biomass.
- Gross productivity is the overall rate of energy capture. Net productivity is lower, adjusted for energy used by organisms in respiration/metabolism.
- Energy transfer between trophic levels is inefficient. Only 10% of the net productivity of one level ends up as net productivity at the next level.
- Ecological pyramids are visual representations of energy flow, biomass accumulation, and number of individuals at different trophic levels.
Feeding Relationships
Transfer of Energy: Ecosystem
1. Read the pages 438- 453 in your booklet and write down notes in your notebook
2. Copy the above picture and write a summary to explain the picture's energy flow
2. Copy the above picture and write a summary to explain the picture's energy flow