T-independent response

TLS Online TPP Program

#Id: 1968

#Unit 10. Ecological Principles

Survivorship (lx) is calculated by dividing the number of individuals in an age class by the number in the original cohort;

TLS Online TPP Program

#Id: 1969

#Unit 10. Ecological Principles

The mortality rate (qx) within each age class is estimated by the variable

TLS Online TPP Program

#Id: 1970

#Unit 10. Ecological Principles

This mortality rate allows us to determine whether mortality increases with age, decreases with age, or is independent of age

TLS Online TPP Program

#Id: 1971

#Unit 10. Ecological Principles

The number alive during an age class can be estimated by the relationship:

TLS Online TPP Program

#Id: 1972

#Unit 10. Ecological Principles

Life expectancy - The average number of additional age classes an individual can expect to live at each age.

TLS Online TPP Program

#Id: 1973

#Unit 10. Ecological Principles

T_x (total years lived) is calculated by summing the values of Lx in age class x and all subsequent (older) age classes.