Population Dynamics

Population

a group of individuals of the same species living in the same area and with the potential of interacting.

Population Dynamics

Describes fluctuations in a population size over time across space.

Dispersal 

The movement of individuals from their place of origin. 

Abiotic 

Non living factors such as temperature, water, sunlight, or soil type can limit distributions. 

Biotic

Living factors such as predation, herbivory, competition, parasitism, lack of pollinators or food can limit distributions.

Density

The number of individuals per unit area or volume.

Dispersion

The pattern of spacing among individuals within a given area. 

Metapopulation 

can ensure that if one population goes extinct then that patch of habitat can be recolonized. 

Exponential population growth

A population can increase in size by a constant proportion at each instant in time.

Intrinsic rate of increase

current population size multiplied by the ( r )