investigating distribution Flashcards
1
Q
abundance
A
how many organisms there are
2
Q
distribution
A
refers to where organisms are
3
Q
‘sampling’
A
only measure a subset of an organism
used to make predictions about size of entire population
almost impossible or very time consuming/difficult to count all organisms in a population
4
Q
quadrats
A
measure abundance , used to estimate size of population
5
Q
transects
A
measure how distribution changes
6
Q
practical method
A
measure length and width of field
generate 10 pairs of random coordinates
place quadrats at each coordinate
count how many organisms in each and record number
calculate mean number of dandelions per m2
estimate total population size using mean per m2 and total area of field