4.2 Quadrates & 4.3 Quadrates samples

4.2 Quadrates

http://www.youtube.com/watch?v=_1goTbXOuic&feature=related

4.3 Quadrates samples

http://www.youtube.com/watch?v=64NOXf-N-aY&feature=related

Quadrats - Sampling different locations to compare the population of the locations

Quadrating - Griding the ecosystem with squares of 0.25m - 1m

Quadrat- To sample locations and estimating populations

Sample

Random (biased)

 Representative (Large) - Get as much of the population toget most accurate estimate)

[

- After the field work, we tabulate the scores into a table.

-Then we add up the numbers then divide by the number of quadrates.

- this would give us the number of daisies per square meter.

Using this technique we can not only estimate the number of daisies in the whole field but could also compare it with the number of other fields.]
(EXTRACTED FROM http://aufarbiology.blogspot.com/  )