The site was identified as important in 2007 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.
Populations meeting IBA criteria ('trigger species') at the site:Species | Red List1 | Season | Year(s) | Size | IBA criteria |
---|---|---|---|---|---|
Northern Gannet Morus bassanus | LC | breeding | 1999 | 16,386 breeding pairs | A4ii, B1ii, B2, C3 |
Great Skua Catharacta skua | LC | breeding | 2001 | 1,074 breeding pairs | A4ii, B1ii, B2, C3 |
Atlantic Puffin Fratercula arctica | VU | breeding | 2002 | 27,949 breeding pairs | B1ii, B2, C3 |
A4iii Species group - seabirds | n/a | breeding | 1999-2002 | 66,832 breeding pairs | A4iii, C4 |
1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2007) may differ.
Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2007. The most recent assessment (2007) is shown below.
IBA conservation assessment | |||
---|---|---|---|
Year of assessment | State | Pressure | Response |
2007 | unfavourable | very high | low |
Whole site assessed? | State assessed by | Accuracy of information | |
yes | population | good |
State (condition of the trigger species' populations) | |||||
---|---|---|---|---|---|
Species | Reference | Actual | Units | % remaining | Result |
Northern Gannet Morus bassanus | 12,000 | 16,386 | breeding pairs | 100 | favourable |
Great Skua Catharacta skua | 1,220 | 1,074 | breeding pairs | 89 | near favourable |
Atlantic Puffin Fratercula arctica | 19,100 | 27,949 | breeding pairs | 100 | favourable |
Black Guillemot Cepphus grylle | 380 | 243 | individuals | 64 | unfavourable |
A4iii Species group - seabirds | 70,610 | 66,832 | breeding pairs | 95 | favourable |
Pressure (threats to the trigger species and/or their habitats) | ||||
---|---|---|---|---|
Threat | Timing | Scope | Severity | Result |
Climate change and severe weather | happening now | whole area/population (>90%) | very rapid to severe deterioration | very high |
Response (conservation actions taken for the trigger species and/or their habitats) | |||
---|---|---|---|
Protected areas | Management plan | Other action | Result |
Most of site (50-90%) covered (including the most critical parts for important bird species) | Unknown | Unknown | low |
Year | Protected Area | Designation | % overlap with IBA |
---|---|---|---|
1955 | Hermaness | Site of Special Scientific Interest (UK) | 32 |
1955 | Hermaness | National Nature Reserve | 31 |
1972 | Norwick | Site of Special Scientific Interest (UK) | <1 |
1980 | Shetland | National Scenic Area | 42 |
1984 | Norwick Meadows | Site of Special Scientific Interest (UK) | <1 |
1988 | Saxa Vord | Site of Special Scientific Interest (UK) | 1 |
1999 | Hermaness; Saxa Vord and Valla Field | Special Protection Area (Birds Directive) | 54 |
2000 | Valla Field | Site of Special Scientific Interest (UK) | 20 |
2011 | Hermaness, Saxa Vord and Valla Field | Marine Protected Area (OSPAR) | 4 |
Habitat1 | Habitat detail | % of IBA |
---|---|---|
Grassland | Humid grasslands | - |
Marine Coastal/Supratidal | - | |
Shrubland | Heathland | - |
Wetlands (inland) | Blanket bogs | - |
Land use | % of IBA |
---|---|
agriculture | 100 |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Hermaness, Saxa Vord and Valla Field (United Kingdom). Downloaded from
https://datazone.birdlife.org/site/factsheet/hermaness-saxa-vord-and-valla-field-iba-united-kingdom on 23/11/2024.