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SPAs
are areas classified under Article 4 of the Birds Directive (Council
Directive 79/409/EEC of 2 April 1979 on the conservation of wild
birds).
The
Dorset Heathlands cover an extensive complex of heathland sites at the
western edge of the Hampshire Basin. The area is
centred around the large estuary of Poole Harbour and lies in close
proximity to the urban conurbation of Bournemouth and Poole. Past losses
of the heathland (an estimated 75% during the twentieth century to
development, agriculture and afforestation) have left the remaining heaths
in a highly fragmented state. Despite this decline and fragmentation, the
heaths show a high degree of ecological cohesion. They contain large areas
of dry heath, wet heath and acid valley mire, all habitats that are
restricted to the Atlantic fringe of Europe. The examples of the Dorset
Heathlands are among the best of their type in the UK. There are also
transitions to coastal wetlands and floodplain fen habitats.
The whole
complex has an outstanding fauna in a European context, covering many
different taxa. Many species have a specialist ecology, strongly
associated with, or restricted to, heathland. The area is ornithologically
important for specialist breeding birds of lowland heathland, as well as
for some wintering raptors.
This site qualifies as an SPA by supporting populations of European
importance of the following species listed on Annex I of the Directive:
During
the breeding season;
Dartford
Warbler Sylvia undata, 418 pairs representing at least 26.1% of the
breeding population in Great Britain (Three count mean, 1991-2 & 1994)
Nightjar
Caprimulgus europaeus, 386 pairs representing at least 11.4% of the
breeding population in Great Britain (Two year mean 1991-1992)
Woodlark
Lullula arborea, 60 pairs representing at least 4.0% of the breeding
population in Great Britain (Count, as at 1997)
Over
winter;
Hen
Harrier Circus cyaneus, 20 individuals representing at least 2.7% of
the wintering population in Great Britain (Count, as at 1991/2)
Merlin
Falco columbarius, 15 individuals representing at least 1.0% of the
wintering population in Great Britain (Count, as at 1991/2)
Source:
www.jncc.gov.uk/ukspa/sites/England/UK9010101.htm
The
Dorset Heaths SPA was declared by the UK Government in October 1998, and
includes an international obligation not to allow the habitats to degrade
with respect to birds. |