Chapter 9 Flashcards
a group of individuals of the same species that live within a particular area and interact with one another
population
the number of individuals in a population
population size
the number of individuals per unit of area
population density
an abiotic event that kills or damages some individuals and thereby creates opportunities for other individuals to grow and reproduce
disturbance
a situation in which a species limited capacity for dispersal prevents it from reaching areas of suitable habitat
dispersal limitation
the entire geographic region over which a species is found
geographic range
spatial arrangement of individuals in a population
dispersion
individuals are relatively evenly spaced throughout their habitat
regular dispersion
individuals are randomly spaced in their habitat
random dispersion
individuals are grouped together in their habitat
clumped dispersion
the actual number of individuals in a population
absolute population size
the number of individuals in one time interval or place relative to the number in another
relative population size
the biotic and abiotic conditions that the species needs to grow, survive, and reproduce
ecological niche
a toll that predicts a species geographic distribution based on the environmental conditions at locations the species is known to occupy
niche model
