Comparison of moss cover in Different Sections 2000.

Changes in Moss Abundance
1999 - 2000
Eurhynchium praelongum

Changes in the abundance of the moss Eurhynchium praelongum 1999 - 2000

Thuidium tamarascinum

Changes in the abundance of the moss Thuidium tamarascinum 1999 - 2000

Polytrichum formosum

Changes in the abundance of the moss Polytrichum formosum 1999 - 2000

Changes in the abundance of the moss Hypnum jutlandicum 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.

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 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.