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The Woodland Education Centre
The Heathland Restoration Project

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Ecological Survey 2001

Changes in Moss Abundance
2000 - 2001

Moss Charts 2000

Eurhynchium praelongum

Changes in the abundance of the moss Eurhynchium praelongum 2000 - 2001

Thuidium tamarascinum

Changes in the abundance of the moss Thuidium tamarascinum 2000 - 2001

Polytrichum formosum

Changes in the abundance of the moss Polytrichum formosum 2000 - 2001

Hypnum jutlandicum

Changes in the abundance of the moss Hypnum jutlandicum 2000 - 2001

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.

Percentage frequency has been used as a measure of abundance rather than mean % cover, because in many cases, changes in moss mean % cover were relatively small from one year to the next. This disguised the fact that many of the mosses had greatly increased in extent across the site over the year. This is demonstrated by the fact that they were found in a much higher percentage of the quadrats sampled.

The % frequencies shown above are based on an average of 25 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 2001