TLS Online TPP Program

#Id: 1977

#Unit 10. Ecological Principles

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

TLS Online TPP Program

#Id: 1978

#Unit 10. Ecological Principles

Crude density-Total number of individual divided by total area.

TLS Online TPP Program

#Id: 1979

#Unit 10. Ecological Principles

Ecological density- Total number of individual divided by total useable area.

TLS Online TPP Program

#Id: 1980

#Unit 10. Ecological Principles

TLS Online TPP Program

#Id: 5348

#Unit 10. Ecological Principles

Many populations breed seasonally, often once a year some are quarterly or monthly.

These are iteroparity or semelparity.

TLS Online TPP Program

#Id: 5349

#Unit 10. Ecological Principles

R0<1, The population eventually declines to extinction 

R0=1, The population size remains constant

R0>1, The population increases