Zebra Mussels Activity
Average Chl a and Secchi Disk 1991-2006
To do this activity you will need to access the Seneca Lake data sets on an MS Excell worksheet andmake a line graph. Instructions for doing this are shown below.
Instructions to make graph
- Visit this website about making line graphs to learn more about line graphs
- Open and save the dataset for Average Secchi and Chl a in Seneca Lake
B. What are two possible explanations for the rise in secchi disk depths over the past ten years?
View Graph 1 below which is a graph of the numbers of zebra mussels in Lake Ontario and the corresponding Chl a concentrations from 1990-2004.
C. What does Graph 1 tell you about the impact of zebra mussels on the primary production in Lake Ontario?
D. If you were a scientist that researched Seneca Lake ecology would you be concerned about the impact of Zebra Mussels? Why or Why not?