Graphing The Data: Survivorship Curves
Survivorship data are collected for a wide variety of organisms. At a U.S. research site in the state of Georgia, researchers examined the survivorship of two plants: elf orpine (Sedum smallii) and oneflower stitchwort (Minuartia uniflora). For the following survivorship data, plot the survivorship curves using a log-scale y axis.
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SURVIVORSHIP DATA IN TWO SPECIES OF PLANTS |
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|---|---|---|
| MONTH | ELF ORPINE | ONEFLOWER STITCHWORT |
| 1 | 1.00 | 1.00 |
| 5 | 0.81 | 0.37 |
| 7 | 0.09 | 0.05 |
| 8 | 0.03 | 0.02 |
| 10 | 0.02 | 0.01 |
| 12 | 0.01 | 0.01 |
| 13 | 0.00 | 0.00 |
| source: Data estimated from Sharitz, R. R., and J. F. McCormick. 1973. Population dynamics of two competing annual plant species. Ecology 54: 723–740. | ||
