An anterior-to-posterior gradient of Hunchback protein.

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

TLS Online TPP Program

#Id: 5350

#Unit 10. Ecological Principles

TLS Online TPP Program

#Id: 5351

#Unit 10. Ecological Principles

λ represents the finite rate of population change over some time interval, often a year

λ = N1/N0