Report 388
Recommendations for the selection of and boundary options for an SPA in Liverpool Bay
(2006)
Webb, A., McSorley, C.A., Dean, B.J., Reid, J.B.
The results indicated that Liverpool Bay hosted populations of red-throated divers Gavia stellata and common scoter Melanitta nigra in numbers that exceeded thresholds that would qualify the site for SPA status. This report follows from Webb et al. (2004) and aims to identify options for boundaries for any possible SPA in Liverpool Bay; it must be read in conjunction with Webb et al. (2004), not least because of frequent reference to the latter herein.

Summary

 
 
Webb et al. (2004) reported analyses of aerial survey data aimed at identifying likely numbers and distributions of waterbirds using Liverpool Bay in the non-breeding season.  The results indicated that Liverpool Bay hosted populations of red-throated divers Gavia stellata and common scoter Melanitta nigra in numbers that exceeded thresholds that would qualify the site for SPA status.  This report follows from Webb et al. (2004) and aims to identify options for boundaries for any possible SPA in Liverpool Bay; it must be read in conjunction with Webb et al. (2004), not least because of frequent reference to the latter herein.
 
In assessing Liverpool Bay for possible SPA qualification, Webb et al. (2004) recommended that it be considered a single site because aggregations of both red-throated divers and common scoter were relatively continuously distributed over the site, occurring at distances less than 10 km apart.  If this recommendation is accepted, population assessments used in Stage 1 and 2 judgements (below) should therefore apply to Liverpool Bay as a whole rather than to any sub-areas or disjunct aggregations of birds.
 
 
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17 pages, softback, some maps
ISSN 0963-8091
 
Please cite as: Webb, A., McSorley, C.A., Dean, B.J., Reid, J.B., (2006), Recommendations for the selection of and boundary options for an SPA in Liverpool Bay, JNCC Report 388, 17 pages, softback, some maps, ISSN 0963-8091