investigating distribution

Question 1

abundance

Answer 1

how many organisms there are

Question 2

distribution

Answer 2

refers to where organisms are

Question 3

‘sampling’

Answer 3

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

Question 4

quadrats

Answer 4

measure abundance , used to estimate size of population

Question 5

transects

Answer 5

measure how distribution changes

Question 6

practical method

Answer 6

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