| Term | Definition |
| Survivor ship curve | A plot of the proportion or numbers in a cohort still alive at each age |
| semelparious | reproduce once then die |
| iteroparous | reproduce potentially several times then you die Ex: lizards produce a few large eggs during second year of life and then reproduce annually for several years |
| r-selected populations | individuals reproduce at an early age, semelparous, have large clutch sizes. selection for life history traits that maximize reproductive success in uncrowded environments |
| K-selected populations | reproduce later, iteroparous, have fewer offspring, parental care (density dependent) |
| Reproductive table | fertility schedule, is age-specific summary of the reproductive rates in a population. It is constructed by measuring the reproductive output of a cohort from birth until death. Concetrate on females because only females produce offspring.(density independent) |