Ch 14 Population Biology

Define random dispersion

each individual's locations is depend of the location of other individuals in a population

The mantilla frog and poison dart frog occupy similar niches in similar habitats in different parts of the world. Because of this, they are considered to be

ecological equivilant

This type of growth is a rapid population increase due to an abundance of resources

exponential growth

The place where an organism lives its life is

habitat

Climax Community

A stable mature community that undergoes little or no change in species

Define mutualism and give an example:

A type of symbiotic relationship where both species benefits: Cow bird riding the back of a deer

Define commensalism and give an example:

A type of symbiotic relationship where one species benefits and the other is not harmed or benefits

Define parasitism and give an example:

A type of symbiotic relationships where one species benefits at the expense of the other Tick on a dog

_______ is the maximum number of individuals in a population that the environment can support

Carrying Capacity K

Primary Succession:

Development of a community in an area that has not previously supported life EX: bare rock, sand dunes, Islands formed by volcanic activity

What is the difference between an exponential growth and logistic growth

Exponential Growth: rapid population increase due to an abundance in resources Logistic Growth: due to a population facing limited resourcing

What is the difference between Immigration and Emigration

Immigration : moving into a population Emigration: moving out of a population

Describe the difference between intraspecific competition and interspecific competition

Intraspecific Competition: Competition between members of different species Interspecific Competition: Competition between members of the same species

_________ is a measurement of the number of individuals living in a defined space

Population Density

Secondary Succession

The replacement of a species that follows disruption on an existing community EX: Forest fires, strong storms, human activity, and farming/logging/mining

Define Clumped dispersion

individuals are clustered together

Define uniform dispersion

individuals are separated by a fairly consistent distance

What are density-dependent limiting factors? Be sure to list the examples

limiting factors are affected by the number of individuals in a given area EX: predators, competition, parasites, disease, and lack of food

What are density-independent limiting factors? Be sure to list the examples

limiting factors that limit a populations growth regardless of the density. EX: unusual weather, natural disasters, human activities, floods/drought and major habitat disruption

Define Carrying Capacity

maximum number of individuals in a population that the environment can support; Denoted by K

A role a species plays in a community

niche

What happens when a birth rate and death rate in a population equal

zero growth in the population