Dynamics of Ecosystems Chapter 57

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

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

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

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

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

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

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

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

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