9.1 Population Flashcards
population
all organisms in the same place at the same time that can reproduce
distribution
shows a spatial relationship between members of a population within a habitat
uniform
resources scare and species very territorial
clumped
fish species gather in large groups to avoid being singled out and eaten
random
seeds of a plant species distributed by wind in a field
density
a useful measure for characterizing the population
population density
of individuals/area
population size
the total amount of individuals in a population
populatoin distribution
organisms of a population spread throughout the range
the density of 2,0000 pine trees over an area of 10 square miles
200 pine trees/square mile
forest measures 5 miles by 5 miles on a grid where the numbers are 7,3,5,9,11
35/5=x/25, x=175
captured and marked 40 butterflies, traps found 100 butterflies where 50 of them had stages what is the population size
40/x x 50/100=80