DK060
Tøndermarsken, Magisterkog and Rudbøl Sø


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 non-breeding 1994 941 individuals A4i, B1i, C2
Tundra Swan Cygnus columbianus LC non-breeding 1993 332 individuals A4i, B1i, B2, C2
Brent Goose Branta bernicla LC non-breeding 1994 6,800 individuals A4i, B1i, C3
Barnacle Goose Branta leucopsis LC non-breeding 1997 30,000 individuals A4i, B1i, C2, C6
Common Shelduck Tadorna tadorna LC non-breeding 1994 6,500 individuals A4i, B1i, C3
Northern Pintail Anas acuta LC non-breeding 1994 900 individuals B1i, C3
Pied Avocet Recurvirostra avosetta LC breeding 1994 248-482 breeding pairs B1i, B3, C2
Pied Avocet Recurvirostra avosetta LC passage 1994 1,300 individuals A4i, B1i, C2
Eurasian Golden Plover Pluvialis apricaria LC passage 1994 25,000 individuals A4i, B1i, C2
Bar-tailed Godwit Limosa lapponica NT passage 1994 4,600 individuals A4i, B1i, C2
Black-tailed Godwit Limosa limosa NT breeding 1994 110-125 breeding pairs B2
Red Knot Calidris canutus NT passage 1994 21,300 individuals A4i, B1i, C3
Dunlin Calidris alpina LC passage 1994 62,000 individuals A4i, B1i, C3
Spotted Redshank Tringa erythropus LC passage 1994 1,270 individuals A4i, B1i, C3
Black Tern Chlidonias niger LC breeding 1994 36-41 breeding pairs C2, C6
A4iii Species group - waterbirds n/a non-breeding - 20,000-49,999 individuals A4iii, C4
A4iii Species group - waterbirds n/a passage 1994 100,000-499,999 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
Agricultural expansion and intensification annual & perennial non-timber crops - shifting agriculture happening now majority/most of area/population (50-90%) moderate to rapid deterioration high
Human intrusions and disturbance recreational activities happening now majority/most of area/population (50-90%) moderate to rapid deterioration high
Invasive and other problematic species and genes invasive non-native/alien species/diseases - named species happening now majority/most of area/population (50-90%) moderate to rapid deterioration high
Invasive and other problematic species and genes problematic native species/diseases - named species happening now majority/most of area/population (50-90%) moderate to rapid deterioration high
Other other threat happening now majority/most of area/population (50-90%) moderate to rapid deterioration high

Condition of key/trigger populations (state)
Scientific Common TargetPop ActualPop Units Remaining Result
Anser anser Greylag Goose 6700 6000 individuals 90 near favourable
Pluvialis squatarola Grey Plover 3600 2100 individuals 59 unfavourable
Charadrius alexandrinus 23 5 individuals 22 very unfavourable
Limosa limosa Black-tailed Godwit 242 101 breeding pairs 42 unfavourable
Calidris pugnax Ruff 87 0 breeding pairs 0 very unfavourable
Calidris alpina Dunlin 9 0 breeding pairs 0 very unfavourable
Sternula albifrons Little Tern 12 1 breeding pairs 9 very unfavourable
Sterna paradisaea Arctic Tern 133 13 breeding pairs 10 very unfavourable
Asio flammeus Short-eared Owl 2 0 individuals 0 very unfavourable
Cyanecula svecica Bluethroat 50 50 breeding pairs 100 favourable

Conservation actions taken at site (response)
Conservation Designation Management Planning Conservation Action Result
Most of site (50-90%) covered (including the most critical parts for important bird species) 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

Protection status:

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Vidåen, Tøndermarsken og Saltvandssøen Special Protection Area (Birds Directive) 35,050 protected area contained by site 6,498
Vidå med tilløb, Rudbøl Sø og Magisterkogen Site of Community Importance (Habitats Directive) 603 protected area overlaps with site 351
Vadehavet med Ribe Å, Tved Å og Varde Å vest for Varde Site of Community Importance (Habitats Directive) 134,760 protected area overlaps with site 814
Vadehavet (Wadden Sea) Ramsar Site, Wetland of International Importance 150,482 protected area contains site 6,520
Tøndermarsken Statsfredning Protected by conservation order, excl. Church surroundings 2,490 protected area contained by site 2,490
Nationalpark Vadehavet National Park 146,600 protected area overlaps with site 0
Margrethe Kog Protected by conservation order, excl. Church surroundings 1,320 protected area contained by site 1,245
Kiers Gård Margrethe Kog Protected by conservation order, excl. Church surroundings 2 protected area contained by site 2

Habitats

IUCN Habitat Habitat detail Extent (% of site)
Coastline Salt marshes, Lagoons -
Artificial - terrestrial -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
nature conservation and research -
agriculture -
For further information about the land use classification please click here.


Recommended citation
BirdLife International (2019) Important Bird Areas factsheet: Tøndermarsken, Magisterkog and Rudbøl Sø. Downloaded from http://www.birdlife.org on 22/05/2019.