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close| Location | Denmark, Viborg Amtskommune |
| Central coordinates | 8o 15.00' East 56o 45.00' North |
| IBA criteria | B1i, C3 |
| Area | 5,490 ha |
| Altitude | 0 - 2m |
| Year of IBA assessment | 2000 |
Ornithological information The numbers of most wintering and passage species have declined markedly since 1983 (formerly more than 20,000 waterbirds), when the site was designated as a Special Protection Area. The most recent available breeding bird data are from 1988 when several species, listed on Annex I of the EC Birds Directive, were recorded breeding at the site, including Recurvirostra avosetta, Philomachus pugnax, Sterna sandvicensis, S. hirundo and S. paradisaea.
Site description Coastal peninsula with an enclosed brackish lagoon, grazing-meadows and shallow fjord area with shoals, banks, intertidal flats and saltmarshes.
Populations of IBA trigger species
| Species | Season | Period | Population estimate | Quality of estimate | IBA Criteria | IUCN Category |
|---|---|---|---|---|---|---|
| Brent Goose Branta bernicla | passage | 1994 | 1,160 individuals | good | B1i, C3 | Least Concern |
Protected areas
| Protected area | Designation | Area (ha) | Relationship with IBA | Overlap with IBA (ha) | |
|---|---|---|---|---|---|
| Agger Tange | Major Conservation Area | 6,100 | protected area contains site | 5,490 |
|
| Agger Tange - DK00EX023 | Birds Directive | 5,453 | protected area contained by site | 5,453 | |
| Agger Tange, Nissum Bredning, Skibsted Fjord og Agerø - DK00EY133 | Habitats Directive | 25,583 | protected area contains site | 5,490 | |
| Hvidbjerg Å, Ove Sø og Ørum Sø - DK00EX132 | Habitats Directive | 1,572 | protected area is adjacent to site | 0 | |
| Nissum Bredning - DK00CX028 | Birds Directive | 13,562 | protected area is adjacent to site | 0 | |
| Nissum Bredning with Harboore and Agger Tange | Wetlands of International Importance (Ramsar) | 12,772 | protected area contains site | 5,490 |
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Habitats
| IUCN habitat | Habitat detail | Extent (% of site) |
|---|---|---|
| Wetlands (inland) | Tidal rivers and enclosed tidal waters | - |
| Coastline | Lagoons; Salt marshes; Sand dunes & beaches | - |
Land use
| Land-use | Extent (% of site) |
|---|---|
| unknown | - |
Management considerations Agricultural intensification, industrialization and urbanization have resulted in the deterioration of water quality, presumably causing bird declines.
Protection status National Partial International High5,490 ha of IBA covered by Special Protection Area (Agger Tange and Krik Vig, 5,490 ha). 5,490 ha of IBA covered by Ramsar Site (Harboøre and Agger Tange, 12,772 ha).
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Recommended citation BirdLife International (2013) Important Bird Areas factsheet: Agger Tange and Krik Vig. Downloaded from http://www.birdlife.org on 23/05/2013
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