DK001
Ulvedybet and Nibe Bredning


IBA Criteria

Year of most recent IBA criteria assessment: 2000

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Whooper Swan Cygnus cygnus LC winter 1995 4,086 individuals A4i, B1i, C2
Tundra Swan Cygnus columbianus LC non-breeding 1994 4,320 individuals A4i, B1i, B2, C2, C6
Eurasian Wigeon Mareca penelope LC non-breeding 1993 26,650 individuals B1i, C3
Pied Avocet Recurvirostra avosetta LC breeding 1993 156 breeding pairs B3
Eurasian Golden Plover Pluvialis apricaria LC non-breeding 1993 14,000 individuals B1i, C2
Mew Gull Larus canus LC breeding 1996 2,210-5,000 breeding pairs B2
A4iii Species group - waterbirds n/a winter 1993-1995 20,000-49,999 individuals A4iii, C4

Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.

For more information about the IBA assessment process and criteria please click here


IBA Monitoring

Most recent IBA monitoring assessment
Year of assessment Threat score (pressure) Condition score (state) Action score (response)
2010 high very unfavourable low
Was the whole site covered? Yes State assessed by Population
Accuracy of information good

Threats to the site (pressure)
Threat Level 1 Threat Level 2 Timing Scope Severity Result
Invasive and other problematic species and genes invasive non-native/alien species/diseases - named species happening now majority/most of area/population (50-90%) slow but significant deterioration high
Invasive and other problematic species and genes problematic native species/diseases - named species happening now some of area/population (10-49%) slow but significant deterioration medium
Natural system modifications dams & water management/use - abstraction of surface water (unknown use) happening now small area/few individuals (<10%) no or imperceptible deterioration low
Pollution agricultural & forestry effluents - nutrient loads happening now majority/most of area/population (50-90%) slow but significant deterioration high
Transportation and service corridors roads and railroads likely in short term (within 4 years) whole area/population (>90%) no or imperceptible deterioration low

Condition of key/trigger populations (state)
Scientific Common TargetPop ActualPop Units Remaining Result
Cygnus columbianus Tundra Swan 4320 125 individuals 3 very unfavourable
Branta bernicla Brent Goose 2154 1635 individuals 76 near favourable
Anser anser Greylag Goose 3000 3000 individuals 100 favourable
Anser brachyrhynchus Pink-footed Goose 9550 9550 individuals 100 favourable
Bucephala clangula Common Goldeneye 3500 3011 individuals 87 near favourable
Fulica atra Common Coot 42000 6000 individuals 15 very unfavourable
Platalea leucorodia Eurasian Spoonbill 18 18 breeding pairs 100 favourable
Botaurus stellaris Eurasian Bittern 2 2 breeding pairs 100 favourable
Sternula albifrons Little Tern 3 0 breeding pairs 0 very unfavourable
Circus aeruginosus Western Marsh-harrier 5 5 breeding pairs 100 favourable
Circus pygargus Montagu's Harrier 2 2 breeding pairs 100 favourable
Circus cyaneus 11 4 individuals 37 very unfavourable

Conservation actions taken at site (response)
Conservation Designation Management Planning Conservation Action Result
Whole area of site (>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
For more information about IBA monitoring please click here

IBA Protection

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Ulvedybet og Nibe Bredning Special Protection Area (Birds Directive) 18,496 protected area contained by site 18,237
Ulvedybet and Nibe Bredning Ramsar Site, Wetland of International Importance 18,575 protected area contained by site 18,530
Ulvedybet Game Reserve 0 protected area contained by site 2,000
Sebbersund, handels-, håndværksplads, kirke Fredet ved afgørelse, exl. Kirkeomgivelser 63 protected area overlaps with site 0
Nibe Bredning; Halkær Ådal og Sønderup Ådal Site of Community Importance (Habitats Directive) 18,907 protected area overlaps with site 16,873
Jammerbugt Kommune §3 beskyttet natur (alle søer, moser, vandløb, heder, enge mv) 16,992 protected area is adjacent to site 0
Aalborg Kommune §3 beskyttet natur (alle søer, moser, vandløb, heder, enge mv) 14,639 protected area overlaps with site 0

Habitats

IUCN Habitat Habitat detail Extent (% of site)
Grassland Humid grasslands -
Wetlands (inland) Tidal rivers and enclosed tidal waters -
Unknown -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
unknown -
For further information about the land use classification please click here.


Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: Ulvedybet and Nibe Bredning. Downloaded from http://www.birdlife.org on 29/01/2022.