Bioaccumulation and that jazz

Bioaccumulation

The increase in concentration of a substance in an organism

Biomagnification

An increase in concentration of a substance from one trophic level to the next

When can bioaccumulation occur?

Must be fat soluble

Long-lived

Must be mobile

Biologically active

What phases do population growth go through?

Exponential

Transitional

Plateau

Carrying capacity

The number of individuals of a species capable of surviving in an environment over long periods of time

Density dependent factors

Dependent on the size of the population

Examples include predetation, disease, aggression, resource availability, stress, competetion

Intraspecific competion

When populations of the same species compete

Interspecific competition

When populations of different species compete

Density independent

The effect on size of the population is not dependent on the size of the population

Examples are natural disasters