1. Dynamics of Ecosystems
Chapter 57

2. Ecosystem
All the organisms that live in a particular area and the abiotic factors in that environment

3. Biogeochemical Cycles
Cycles of chemical elements as they pass through both biotic and abiotic components of an ecosystem
Flow of key nutrients:
Carbon
Water
Nitrogen
Phosphorus

4. Carbon Cycle Create a cycle that includes the following processes
Cellular respiration
Photosynthesis
Decomposition
Combustion
Food chains

5. Water Cycle Create a cycle that includes the following processes
Evaporation
Precipitation
Condensation
Transpiration
Runoff
Groundwater
Uptake

6. Nitrogen Cycle Create a cycle that includes the following processes
Decomposition
Food chains
Nitrogen fixation
Excretion
Denitrification
Microbial metabolism
Uptake

7. Phosphorus Cycle Create a cycle that includes the following processes
Food chains
Excretion
Decomposition
Uptake
Weathering

8. Not only do nutrients flow in an ecosystem, so does energy…

13. Primary Productivity
Rate at which primary producers synthesize new organic material (tissues) by photosynthesis
Photosynthesis Equation
6CO2 + 6 H2O  6O2 + C6H12O6
The more oxygen produced, the more organic material created
DISCUSS EQUATION ON EQUATION SHEET

22. Ecosystem Stability Species richness Space Reduce human impacts
more species, more stability
Space
Larger area, more diversity
Reduce human impacts
Pollution
Resource depletion
Loss of habitat (deforestation)
Ozone depletion
Combustion and increase in carbon dioxide
Runoff
Introduced species