Water Framework Directive Marine Plants Task Team Tools Paper ...

Water Framework Directive Marine Plants Task Team Tools Paper ... Water Framework Directive Marine Plants Task Team Tools Paper ...

29.12.2012 Views

the existing database. Such areas include the RoI; therefore it is unclear where the boundary should be drawn within RoI and NI, so this will temporarily be set at the border between the two countries (Figure 11). There was no significant difference in species composition between different eco­ regions or between predicted quality status although some of the good, moderate and poor sites did fall out but there is insufficient data for this to be conclusive. Figure 10: MDS plot showing the similarities in species composition and richness between just England, RoI, Scotland and Wales.

Figure 11: Map of the UK and Republic of Ireland indicating the boundaries used for the compilation of the three reduced species lists. After compilation of the database, members of the Marine Plants Task Team tentatively assigned each site a level of quality, between poor and good, based on expert knowledge of each of the sites. Only the species records from those sites deemed as ‘high quality’ were used when extracting a reduced species list. This decision was taken as the final reduced species lists should ideally be representative of high quality shores with which other shores will be compared and therefore act as a reference condition.

Figure 11: Map of the UK and Republic of Ireland indicating the boundaries<br />

used for the compilation of the three reduced species lists.<br />

After compilation of the database, members of the <strong>Marine</strong> <strong>Plants</strong> <strong>Task</strong> <strong>Team</strong><br />

tentatively assigned each site a level of quality, between poor and good, based on<br />

expert knowledge of each of the sites. Only the species records from those sites<br />

deemed as ‘high quality’ were used when extracting a reduced species list. This<br />

decision was taken as the final reduced species lists should ideally be representative of<br />

high quality shores with which other shores will be compared and therefore act as a<br />

reference condition.

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