... with bracken measured in majority larch woodland. I hope to then relate the findings to abiotic factors. Variables: There are a number of abiotic factors which could effect my results and therefore I plan to measure these factors to take note of any significant differences in the two areas being studied. pH: From my research about bracken I have discovered that it prefers to grow on slightly acidic soil, therefore this could effect the amount and height which grows in the areas. I will therefore systematically measure the pH levels in every 5th quadrat taken in each site. This will be done by taking soil samples from the centre of each quadrat and then analysing the soil once back at the lab by using barium sulphate, deionised water and universal indicator. Slope and Aspect: As the sites I will be working on are situated on hillside I will take the aspect and slop readings ...

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