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.

TLS Online TPP Program

#Id: 1974

#Unit 10. Ecological Principles

Quadrate method

TLS Online TPP Program

#Id: 1975

#Unit 10. Ecological Principles

If this ratio R is equal to 1, then the population is randomly dispersed.

If R is significantly greater than 1, the population is evenly dispersed

If R is significantly less than 1, the population is clumped

TLS Online TPP Program

#Id: 1976

#Unit 10. Ecological Principles

Abundance- Its size—the total number of individuals in the population that exist with in a defined area.

TLS Online TPP Program

#Id: 1977

#Unit 10. Ecological Principles

Population density is the number of individuals per unit area. D=N/S