Data Zone
The site was identified as internationally important for bird conservation in 2000 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 List | Season (year/s of estimate) | Size | IBA criteria |
|---|---|---|---|---|
| Whooper Swan Cygnus cygnus | LC | winter (1995) | 4,086 birds | A4i, B1i, C2 |
| Tundra Swan Cygnus columbianus | LC | non-breeding (1994) | 4,320 birds | A4i, B1i, B2, C2, C6 |
| Eurasian Wigeon Mareca penelope | LC | non-breeding (1993) | 26,650 birds | B1i, C3 |
| Pied Avocet Recurvirostra avosetta | LC | breeding (1993) | 156 pairs | B3 |
| Eurasian Golden Plover Pluvialis apricaria | LC | non-breeding (1993) | 14,000 birds | B1i, C2 |
| Mew Gull Larus canus | LC | breeding (1996) | 2,210–5,000 pairs | B2 |
| A4iii Species group - waterbirds | n/a | winter (1993–1995) | 20,000-49,999 birds | A4iii, C4 |
Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2000. The most recent assessment (2010) is shown below.
| IBA conservation assessment | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2010 | very poor | high | low |
| Whole site assessed? | State assessed by | Accuracy of information | |
| yes | population | good | |
| State (condition of the trigger species' populations) | |||||
|---|---|---|---|---|---|
| Species | Actual vs Reference (units) | % remaining | Result | ||
| Tundra Swan Cygnus columbianus | 125 / 4,320 (birds) | 3 | very poor | ||
| Brent Goose Branta bernicla | 1,635 / 2,154 (birds) | 76 | moderate | ||
| Greylag Goose Anser anser | 3,000 / 3,000 (birds) | 100 | good | ||
| Pink-footed Goose Anser brachyrhynchus | 9,550 / 9,550 (birds) | 100 | good | ||
| Common Goldeneye Bucephala clangula | 3,011 / 3,500 (birds) | 87 | moderate | ||
| Eurasian Coot Fulica atra | 6,000 / 42,000 (birds) | 15 | very poor | ||
| Eurasian Spoonbill Platalea leucorodia | 18 / 18 (pairs) | 100 | good | ||
| Eurasian Bittern Botaurus stellaris | 2 / 2 (pairs) | 100 | good | ||
| Little Tern Sternula albifrons | 0 / 3 (pairs) | 0 | very poor | ||
| Western Marsh-harrier Circus aeruginosus | 5 / 5 (pairs) | 100 | good | ||
| Montagu's Harrier Circus pygargus | 2 / 2 (pairs) | 100 | good | ||
| Circus cyaneus | 4 / 11 (birds) | 37 | very poor | ||
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Pollution | happening now | most of population/area (50–90%) | slow decline (1–10% over 3 generations) | high |
| Invasive and other problematic species and genes | happening now | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Natural system modifications | happening now | few individuals/small area (<10%) | no or slight decline (<1% over 3 generations) | low |
| Transportation and service corridors | likely in short term (<4 years) | whole of population/area (>90%) | no or slight decline (<1% over 3 generations) | low |
| Response (conservation actions taken for the trigger species and/or their habitats) | |||
|---|---|---|---|
| Designation | Planning | Action | Result |
| Whole area (>90%) covered by appropriate conservation designation | No management plan exists, but the management planning process has begun | Some limited conservation initiatives are in place | low |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| - | Ulvedybet | Game Reserve (-) | - |
| 1992 | Aalborg Kommune | §3 beskyttet natur (alle søer, moser, vandløb, heder, enge mv) (IV) | 1 |
| 2006 | Sebbersund, handels-, håndværksplads, kirke | Fredet ved afgørelse, exl. Kirkeomgivelser (V) | <1 |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Grassland | 15 | Humid grasslands |
| Marine Coastal/Supratidal | major (>10) | |
| Marine Intertidal | major (>10) | |
| Marine Neritic | major (>10) |
| Land use | % of IBA |
|---|---|
| unknown | - |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Ulvedybet and Nibe Bredning (Denmark). Downloaded from
https://datazone.birdlife.org/site/factsheet/ulvedybet-and-nibe-bredning-iba-denmark on 23/12/2024.