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 | 1998-2000 | 2,500 breeding pairs | B2 |
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 | favourable | low | high |
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 | 2,100 | 2,500 | breeding pairs | 100 | favourable |
Pressure (threats to the trigger species and/or their habitats) | ||||
---|---|---|---|---|
Threat | Timing | Scope | Severity | Result |
No known threats | happening now | small area/few individuals (<10%) | no or imperceptible deterioration | low |
Response (conservation actions taken for the trigger species and/or their habitats) | |||
---|---|---|---|
Protected areas | Management plan | Other action | Result |
Whole area of site (>90%) covered by appropriate conservation designation | A comprehensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species | The conservation measures needed for the site are being comprehensively and effectively implemented | high |
Year | Protected Area | Designation | % overlap with IBA |
---|---|---|---|
2005 | Alderney West Coast and the Burhou Islands | Ramsar Site, Wetland of International Importance | 100 |
Habitat1 | Habitat detail | % of IBA |
---|---|---|
Marine Coastal/Supratidal | 100 |
Land use | % of IBA |
---|---|
not utilised | - |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Ortac, Alderney (United Kingdom). Downloaded from
https://datazone.birdlife.org/site/factsheet/ortac-alderney-iba-united-kingdom on 23/11/2024.