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