Ecology Flashcards
all organisms living in one area
community
all the organisms in a given area as well as the abiotic factors with which they interact
ecosystem
global ecosystem
biosphere
what an organism eats and what it needs to survive, it’s job
niche
the total number of individuals in a population; limited by births, deaths, immigration, and emigration
population size
the number of individuals per unit area or volume (mark and recapture)
population density
the pattern of spacing of individuals within the area the population inhabits
dispersion
the maximum of a population an environment can support
carrying capacity
the maximum rate at which a population could increase under ideal conditions
biotic potential
many small young little or no parenting rapid maturation reproduce once example: insects
r-strategists
few large young intensive parenting slow maturation reproduce many times example: mammals
k-strategists
factors that limit population growth
limiting factors
two species cannot coexist in a community if they share a niche
competition
a symbiotic relationship where both organisms benefit
mutualism
symbiotic relationship where one organism benefits and one is neither helped nor harmed
commensalism
