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The Woodland Education Centre
The Heathland Restoration Project
Contents

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Ecological Survey 2000
Selected Heath Species

Selected Heath Species 1999

Changes in abundance of Heather
1999 - 2000.

Changes in abundance of Heather 1999 - 2000

Changes in abundance of Bell Heather
1999- 2000

Changes in abundance of Bell Heather 1999 - 2000

Changes in abundance of European Gorse
1999- 2000

Changes in abundance of gorse 1999 - 2000

Changes in abundance of Bramble
1999 - 2000

Changes in abundance of bramble 1999 - 2000

Changes in abundance of Common Dog-violet
1999 - 2000

Changes in abundance of violet 1999 - 2000

Changes in abundance of Heath Speedwell
1999 - 2000

Changes in abundance of Heath Speedwell 1999 - 2000

Changes in abundance of Slender St John's-wort
1999 - 2000

Changes in abundance of Slender St John's-wort 1999 - 2000

Changes in abundance of Silver Birch
1999 - 2000

Changes in abundance of Silver Birch 1999 - 2000

Changes in abundance of Pill Sedge
1999 - 2000

Changes in abundance of Pill Sedge 1999 - 2000

The comparisons between sections have been made using  % frequency (with data taken from all the quadrats sampled, both belt and random) as a measure of abundance.

Percentage frequency = the percentage of the total number of quadrats sampled which contained the species. For example, a percentage frequency of 100%, means that the species was found in all quadrats sampled.

The % frequencies shown above are based on an average of 21 quadrats sampled per section. Differences of 10% frequency (which equates to a difference of approximately 2 quadrats) or less  should not be regarded as significant.

 

 

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Ecological Survey 2000
Contents