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 2a: Observe Mearns Rock

The goal in this step is to familiarize yourself with the Mearns Rock photo data below. Quickly look through some of the photos and learn to navigate on this page. Don’t worry about reading all the accompanying text for now—you will return to this page later to do that.

The photos are of Mearns Rock and the Mearns Rock quadrats from 1990 to 2004 (click the tabs to see photos from different years). Notice that on the left side of each page is a photo of Mearns Rock in its entirety. On the right side of each page is a close-up photo of the corresponding quadrat for that year. Later, you will come back to this page to estimate the percent cover (i.e. abundance) of each organism from the quadrat photos.

But first, you will need to collect a few resources in order to record your data. Proceed to Step 2b to gather these resources and begin collecting your data.

When you come back to collect data, you will use the Percent Cover Chart and Color Chart in the Pop-up Window as an aid in estimating the percent cover of each organism on the quadrat you are observing. Think of the black areas in the chart as representing one of three life forms you learned about earlier in the field guide.

Open tab links in browser window instead.


next pageProceed to Step 2b: Record Your Data


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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_observe.html