Baseline study Fish, fry and commercial fishery Nysted Offshore ...

Bio/consult as Page 12
All the catch periods gives different results, which was confirmed by the test results,
unless in month 10 and 11 which were coinciding (fig. 4). The contribution from each
species to these differences is not described in the present note.
Abundance, MDS square root transformed , signature=months
Stress: 0.24
Figure 4. MDS-map of Bray-Curtis distances between all stations calculated as square root
transformed data.
Figure 5 shows the result of the same ordination with signatures marking the two areas.
To facilitate the interpretation of the graph the samples have been separated into each of
the five sampling occasions. If the graphs are placed on top of each other they will
represent figure 4. A global permutation test shows significant areas if not considering
the times. If each sampling occasion is tested isolated in each period only month 5 and 9
gives a significant difference between the areas.
5
6
9
10
11