Prince William's Oily Mess - A Story of Recovery

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a. Read Intro | b. Learn the Organisms | c. State Predictions!
a. Observe Mearns Rock | b. Record Data
a. Plot Data | b. View Example Graph
a. Interpret Data & Write Report | b. Share What You Have Learned
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Graphing Changes in Marine Life Abundance

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STEP 3a: Plot Your Data


Your final step will be to graph your data so that you can see trends over time in the relative abundance of the three organisms in the quadrat. Relative abundance is the number of individuals of a species compared to the abundance of all the other species. Your graphs will look similar to those that marine ecologists make after actually measuring the amount of cover.

arrow Graphs for Plotting - Open and print timeline graphs (pdf, 136Kb). You'll plot your data from the table on these graphs.

 

 

 

 

 

 

 

 

next page Proceed to Step 3b: View Example Graph

Glossary Express


Abundance
—the total number of individuals of a species present in an area.

Cover
—referring to the amount of plants or other organisms that are occupying the ground, a rock or other surface.

Ecology—the study of the relationship among organisms and between organisms (the biological environment) and their physical environment.

Relative Abundance
—the proportion or numbers of a species compared to the total number of individuals of all the species in the community or sample.

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Revised March 25, 2008 | Questions, Comments? Contact Us | Report Error | Disclaimer | About the Site | User Survey
Web Site Owner: National Ocean Service | National Oceanic and Atmospheric Administration | Department of Commerce | USA.gov
http://oceanservice.noaa.gov/education/stories/oilymess/working_plot.html