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