Population Ecology Flashcards
what does population mean?
all of the organisms in the same place at the same time that can reproduce together
what does population density mean?
the number of individuals/area
what is population size?
the total amount of individuals in a population
what is population distribution?
the pattern in which organisms of a population are spread throughout the range
uniform dispersion pattern?
resources are scarce and as a result species are very territorial
clumped dispersion pattern?
a certain fish species tends to gather in large groups to avoid being singled out and eaten by predators
random dispersion pattern?
the seeds of a plant species are distributed by wind in a field where conditions are uniform
what does random sampling work best with?
uniform distribution patterns
direct counting
counting every individual
indirect counting
counting every individual in a hive, burrow, town, etc. and then count the number of hives, burrows, etc.
of organisms in a sample
number of organisms in sample
area of sample
total # of organisms
total area
mark and recapture
number of total
