Ecosystem cycles, pools, and fluxes

Here are a few resources to help you review some of the Ecosystems concepts covered in this section

Ecosystem Cycling

• Energy Flow Through Ecosystems & Primary Productivity 

• Regulation of Ecosystem Functions, Limiting resources

   

General patterns of energy flow for a) forest, b) grassland, c) plankton, d) stream:

Essentials of Ecology by Townsend et al.

 

Water Cycle

Here's a diagram of the water cycle that you can use to quiz yourself. You may check your answers here.

Useful links:

• Groundwater flow, discharge, & infiltration 
• Follow a drop through the water cycle   
• Water and human health: Water pollution,  Water-related diseases, and Water conservation policies.
• Case study: Chesapeake Bay watershed maps.
  

Biogeochemical cycles

 For a general review of some of these cycles, click here.

Review of greenhouse gases.  This website has a good description of the nitrogen cycle; links on the left sidebar proved more in-depth description.

Nutrient budget components in terrestrial and aquatic ecosystems; Inputs = blue, outputs = black. (Essentials of Ecology by Townsend et al).

Nitrogen Cycle (Learner.org)

Phosphorus cycle (Learner.org)

A comparison of major nutrient cycles (you don't need to know the Sulfur cycle). Source: Townsend et al.