APES - key term 10/3

limiting resource

limiting resource

a resource that a population cannot live without (would require to increase in size)

Carrying capacity

maximum population of a given species that a particular habitat can sustain indefinitely without the habitat being degraded (Determined by biotic potential and env resistance)

competition

A common demand by two or more organisms upon a limited supply of a resource

Density independent factor

Factors are factors that reduce a % of population

Density dependent factor

Factors that affect a pop size no regardless of its density

Die-off

a rapid decline in a population due to death

k selected species

Large
Have few offspring
Live in stable environments
Expend a lot of energy per offspring
Parental care for their young
Mature later in life
Reproduce more than once
Competition in habitat species is high

logistics growth

rapid exponential growth followed by a decrease in growth until population levels off

metapopulation

a group of spatially distinct populations that are connected by occasional movements of individuals between them

overshoot

when the population becomes larger than carrying capacity

population

group of individuals of the same species that live in the same area

population density

Number of individuals per unit area

population distribution

how population is spread out in an area

r selected species

Small
Have many offspring
Expend minimal energy per offspring
Little to no parental care
Mature early in life
May reproduce only once in lifetime
Competition in habitat species is low

range of tolerance

range of chemical and physical conditions that must be maintained for populations of a species to stay alive and grow.