Populations grow when R0 or λ>1, populations decline when R0 or λ<1, and are at equilibrium when R0 or λ=1

TLS Online TPP Program

#Id: 8227

#Unit 10. Ecological Principles

Population can be defined as a group of interbreeding individuals occupying the same area at the same time.

TLS Online TPP Program

#Id: 8228

#Unit 10. Ecological Principles

Spatial structure - The pattern of density and spacing of individuals in a population.

TLS Online TPP Program

#Id: 8229

#Unit 10. Ecological Principles

Population distributions have five important characteristics

Geographic range

Abundance

Density

Dispersion

Dispersal

TLS Online TPP Program

#Id: 8230

#Unit 10. Ecological Principles

The geographic range of a species includes all the areas its members occupy during their life.

TLS Online TPP Program

#Id: 8231

#Unit 10. Ecological Principles

Endemic species - Species that live in a single, often isolated, location.

Cosmopolitan Species - with very large geographic ranges that can span several continents.

TLS Online TPP Program

#Id: 8232

#Unit 10. Ecological Principles

Dispersion of a population describes the spacing of individuals with respect to one another within the geographic range of a population