Ch. 11 Quiz Flashcards
what is the diff b/w population distribution and population dispersion?
population dispersion = spacing of individuals w/ respect to one another w/in a population
realized niche
range of abiotic and biotic conditions in which a species persists
the american bullfrog is native to eastern N. America, but it has been moved by humans and thrives in western N.A. what does this suggest about the cause of the bullfrogs limited historical range?
it was caused by an environmental barrier
the spread of introduced species can be predicted using
ecological niche modeling
what mechanisms could cause evenly spaced distributions of individuals w/in populations?
territorial animals
if the grass is 3 times greater in pasture A than pasture B, how many cows would you expect in pasture A according to ideal free distribution (starting w/ 100 cows)
75
which model includes consideration of the quality of the surrounding matrix
landscape model
plant A has seeds that are carried by the wind and plant B has seeds that are distributed by gravity. How would lifetime dispersal distance and neighborhood size differ b/w A and B.
A would have a greater lifetime dispersal and larger neighborhood size
what is the relationship b/w abundance of a species and the geographic range of the species?
geographic range increases as abundance increases
explain why researchers commonly find a relationship b/w adult body size and population density
larger animals required more land to support their metabolism
