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IPA Factsheet - Skomer, Skokholm and Dale Peninsula
Site code
CountryUnited Kingdom
Administrative regionWales (Pembrokeshire)
Central co-ordinates51o 44' N / 5o 16' W map
Area2204
Altitude0 - 79
 

 Site Description The Dale Peninsula and the nearby islands of Skomer and Skokholm are bounded by dramatic cliffs, whose ledges and shores are home to a variety of maritime species. There are some important lichen communities, both on the rocky shores and inland. The plateau vegetation is much affected by salt spray, rabbit grazing and nutrient enrichment from seabirds. The islands have mixed grassland and maritime heath vegetation in varying proportions and the seas around Skomer are a marine nature reserve, notable for marine algae.

 Botanical Significance Noted for lichens, bryophytes, marine algae and habitat interest. The area has a very high diversity of algae, with over 240 seaweed species recorded, which represents c. 38% of the marine seaweed species for Britain. Several notable algae are recorded from this area, including the red alga Schmitzia hiscockiana, 98% of whose known European populations occur in Britain. Other species are confined to the south west or considered to be rare.

 General Habitat Description Rock cliffs, ledges and shore, including the supralittoral: coastal rocks, Pembrokeshire Marine/ Sir Benfro Forol SAC.

Land use

Land use% CoverLevel
agriculture (arable)Major
agriculture (animals)Major
nature conservation and researchMajor
tourism/recreationMajor

Threatened Species

Species NameIPA Assess.Species Assess.AbundanceData qualityCriteria

Botanical Richness

EUNIS level 2 code & nameIPA Assess.Habitat Assess.% of indicator speciesNo. SpeciesNational BiotopeData qualityCriteria
A3 Sublittoral rock & other hard substrata2016201600unknownB
B3 Rock cliffs, ledges & shores, including the supralittoral200700unknownB
A1 Littoral rock & other hard substrates2012201200unknownB

Threatened Habitats

IPA Habitat code & nameIPA Assess.Habitat Assess.AreaData qualityCriteria
1130 Estuaries201620160unknownCii
1160 Large shallow inlets & bays201620160unknownCii
1170 Reefs201620160unknownCii
1110 Sandbanks which are slightly covered by sea water all the time201620160unknownCii
1140 Mudflats & sandflats not covered by seawater at low tide201620160unknownCii
1150* Coastal Lagoons*201620160unknownCi
1330 Atlantic salt meadows (Glauco-Puccinellietalia maritimae)201620160unknownCii
8330 Submerged of partially submerged sea caves201620160unknownCii

Protection

DesignationProtected Area NameRelationship with IPAOverlap with IPA
Site of Special Scientific InterestSkokholmprotected area overlaps with IPA107
Site of Special Scientific InterestSkomer Island and Middleholmprotected area overlaps with IPA330
Site of Special Scientific InterestDale and South Marloes Coastprotected area overlaps with IPA287
Site of Special Scientific InterestDe Porth Sain Ffraid/St Bride`s Bay Southprotected area overlaps with IPA10
Site of Special Scientific InterestMilford Haven Waterwayprotected area overlaps with IPA5
Special Area of ConservationPembrokeshire Marine / Sir Benfro Forolprotected area is adjacent to IPA1826
Special Protection AreaSkokholm and Skomerprotected area contained by IPA422
Site of Special Scientific InterestDale and South Marloes Coastprotected area contained by IPA288
Site of Special Scientific InterestDe Porth Sain Ffraid / St Bride’s Bay Southprotected area overlaps with IPA10
Site of Special Scientific InterestMilford Haven Waterwayprotected area is adjacent to IPA5
Site of Special Scientific InterestSkokholmprotected area contained by IPA108
Site of Special Scientific InterestSkomer Island and Middleholmprotected area contained by IPA332
National Nature ReserveSkomer Islandprotected area contained by IPA315
Marine Nature ReserveSkomerprotected area overlaps with IPA1302
National ParkPembrokeshireprotected area contains IPA701

Management

TypeDescriptionYear startedYear finishes
Protected Area Management PlanSkokholm and Skomer SPA2008
Habitat Management PlanLowland heathland HAP2002
Habitat Management PlanMaritime Cliffs and Slopes HAP2002
Species Management PlanRumex rupestris (Shore Dock) SAP2002
Species Management PlanRanunculus tripartitus sap
Species Management PlanPilularia globulifera (Pillwort) SAP2002
Species Management PlanSilene gallica (Small-flowered Catchfly)2002

Threats

ThreatImportance
climate change/ sea level risemedium
eutrophicationmedium
agricultural intensification/expansion (grazing)medium
abandonment/reduction of land managementhigh
habitat fragmentation/isolationmedium
intrinsic species factors (slow growth, density)medium

 Conservation Issues Internal natural factors that might potentially alter the algal communities and species dynamics are changes in natural currents. Of internal natural anthropogenic factors, the input of contaminants and silt are considered most like to impact on the algae. Of external factors, marine pollution, especially the introduction of suspended solids is the most like to have an impact.

Contact Information

ContactContact Type
Cath ShellswellSite report compiler