Sampling plants Flashcards
what is a quadrat
a quadrat is a small frame used to define the size of the sample area
how do you prepare to sample plants
wear-
suitable footwear
suitable clothing
have-
camera to record specimens
clipboard, pen and paper
apparatus needed
why must a percentage cover be calculated when sampling plants
Because plants are too small or numerous to be counted individually, therefore it may be best to calculate a percentage ground cover
how can a quadrat help students estimate percentage ground cover
some quadrats are divided into small squares with string-
describe the structure of a point frame
frame holding a number of long needles
how can you use a point frame to help measure percentage cover
lower the point frame into the quadrat.
Any plant touching the needles of the point frame.
each individual plant touching the needle can be seen as a 1% cover, as if the frame has 10 needles and is used 10 times it will have 100 readings.
what is a transect
a line taken across a habitat
what is the common object used as a transect
Tape measure
how do you use a transect
- place the transect
- record plants touching the lines at the set intervals
what’s the difference between a belt transect and a interrupted belt transect
a belt transect records what plants touch the line at set intervals
an interrupted belt transect is when you use a quadrat at set intervals along the line
what type of data does a belt transect provide
Quantitative data- Numerical data which can be analysed statistically.