The document discusses key concepts in population ecology including: 1) Population density and patterns of dispersion can be clustered, uniform, or random depending on environmental factors. 2) Survivorship curves illustrate variations in mortality rates over the lifespan. Reproductive strategies include semelparity with one-time reproduction or iteroparity with repeated reproduction. 3) Population growth can follow exponential, logistic, or S-shaped curves but is ultimately limited by environmental carrying capacity due to factors like food, water, shelter, and disease.