More Ecology and Cycles of Matter

1. More Ecology and Cycles of Matter

2. Warm-up If the following organisms were arranged in a food pyramid, which organism would have the least amount of total energy available? (shrubs, lizards, insects, coyotes) • Coyote B. Insect C. Lizard D. Shrub

3. Energy Flow • Food Web • The depiction of a network of feeding relationships

4. Energy Flow • Trophic Levels: Each step in a food chain • Producers make up the bottom level • Consumers make up the upper levels • Each level depends on the level below it

5. Draw Pyramid

6. Energy Flow • Biomass Pyramid: amount of potential food available for each trophic level • Biomass: amount of living tissue • Pyramid of Numbers: based on the numbers of individual organisms

7. Cycles of Matter • The water cycle: • All living things require water to survive • Precipitation, transpiration, evaporation etc

8. Cycles of Matter • The Carbon Cycle: • Carbon is the key ingredient of living tissue • Respiration, photosynthesis, feeding, erosion etc.

9. Cycles of Matter • The Nitrogen Cycle • Necessary for amino acids • Nitrogen fixing bacteria on roots “fix” atmospheric nitrogen to be used by plants. • Consumers get nitrogen by eating producers