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The effect of competition on the distribution of marram grass.
- Words:
- 2402
- Submitted:
- Tue Mar 23 2004
Have a little read: ... The effect of competition on the distribution of marram grass A transect was measured out at a 90° angle to the shoreline. Along this transect 2 sites were chosen a mobile and fixed dune. At each zone a sampling area of 20m x 20m was measured out using measuring tape. The measuring tapes were then used as references (x/y axis) so that co-ordinates from a table of random numbers were easily found. A random number table is a list of numbers, the first number lower than 20 in the first column on the table is the x-axis co-ordinate, and the second number lower than 20 will be the y-axis co-ordinate. This was the best way to select an unbiased sample so every species had an equal probability of being selected. At the fist 5 co-ordinates an optimum quadrat size was calculated. A range of quadrat sizes e.g. 10cm x 10cm, 20cm x 20cm,
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