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The Woodland Education Centre
The Heathland Restoration Project

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Ecological Survey 1999

Comparison of Dominant Grass Cover
in Different Sections.

Comparison of Grass Dominance across the different sections 1999.


Comparison of Grass Dominance across the different sections 1998.

Yorkshire Fog is a very widespread and common grass in Britain occurring in a variety of habitats including waste ground, meadows, rough grassland and open woodland, as well as on a wide range of soils. This is an opportunistic species often regarded as something of a weed.

Common Bent is also widespread and abundant in Britain on waste ground and in pastures. It can tolerate a wide range of soils, but is very common on poor, dry, acid soils. As a result, it is often an important component of heath and moorland vegetation.

The ability of Common Bent to thrive on poor soils may explain the increasing abundance of this species and the decreasing dominance of Yorkshire Fog in many of the sections over the year.

The comparisons between sections have been made using mean % cover alone (with data taken from all the quadrats sampled, both belt and random).

Percentage frequency has not been used as a measure of abundance in this case, because it is almost universally high and shows little difference in abundance across the site and from one year to another. This is therefore better demonstrated using mean % cover as a measure of abundance because it is much more sensitive to variations between sections and over time.


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Ecological Survey 1999