PL050
Wizna Swamps


IBA Criteria

Year of most recent IBA criteria assessment: 2010

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Corncrake Crex crex LC breeding 2008 352-365 males C1, C6
Eurasian Curlew Numenius arquata NT breeding 2008 16-17 breeding pairs C1
Great Snipe Gallinago media NT breeding 2008 14 males C6
Montagu's Harrier Circus pygargus LC breeding 2008 13-14 breeding pairs C6
Aquatic Warbler Acrocephalus paludicola VU breeding 2008 73-74 males C1, C6
Barred Warbler Curruca nisoria LC breeding 2008 263-300 breeding pairs C6

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 very high not assessed negligible
Was the whole site covered? Yes State assessed by Population
Accuracy of information medium

Threats to the site (pressure)
Threat Level 1 Threat Level 2 Timing Scope Severity Result
Agricultural expansion and intensification annual & perennial non-timber crops - small-holder farming happening now majority/most of area/population (50-90%) very rapid to severe deterioration very high
Agricultural expansion and intensification marine and freshwater aquaculture - subsistence/artisinal aquaculture happening now some of area/population (10-49%) slow but significant deterioration medium
Biological resource use logging & wood harvesting - unintentional effects: large scale happening now some of area/population (10-49%) slow but significant deterioration medium
Climate change and severe weather temperature extremes happening now whole area/population (>90%) slow but significant deterioration high
Human intrusions and disturbance recreational activities happening now some of area/population (10-49%) slow but significant deterioration medium
Invasive and other problematic species and genes invasive non-native/alien species/diseases - unspecified species happening now majority/most of area/population (50-90%) slow but significant deterioration high
Natural system modifications dams & water management/use - dams (size unknown) happening now majority/most of area/population (50-90%) very rapid to severe deterioration very high
Natural system modifications fire & fire suppression - increase in fire frequency/intensity happening now small area/few individuals (<10%) slow but significant deterioration low
Natural system modifications other ecosystem modifications happening now majority/most of area/population (50-90%) very rapid to severe deterioration very high
No known threats no known threats happening now small area/few individuals (<10%) no or imperceptible deterioration low
Pollution domestic & urban waste water - type unknown/unrecorded happening now majority/most of area/population (50-90%) very rapid to severe deterioration very high
Pollution garbage & solid waste happening now small area/few individuals (<10%) slow but significant deterioration low

Condition of key/trigger populations (state)
Scientific Common TargetPop ActualPop Units Remaining Result
Curruca nisoria Barred Warbler 2 2 breeding pairs 100 not assessed

Conservation actions taken at site (response)
Conservation Designation Management Planning Conservation Action Result
Some of site covered (10-49%) Not assessed Very little or no conservation action taking place negligible
For more information about IBA monitoring please click here

IBA Protection

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Przełomowa Dolina Narwi Special Protection Area (Birds Directive) 7,649 protected area overlaps with site 846
Ostoja Narwiańska Site of Community Importance (Habitats Directive) 18,605 protected area overlaps with site 0
Ostoja Biebrzańska Special Protection Area (Birds Directive) 148,509 protected area overlaps with site 1,815
Dolina Biebrzy Site of Community Importance (Habitats Directive) 121,206 protected area overlaps with site 3,161
Biebrzański Park Narodowy Park Narodowy 59,740 protected area is adjacent to site 200
Biebrzanski National Park (Biebrzanski Park Narodowy) Ramsar Site, Wetland of International Importance 59,233 protected area is adjacent to site 200
Bagno Wizna II Rezerwat Przyrody 80 protected area contained by site 0
Bagno Wizna I Rezerwat Przyrody 37 protected area contained by site 0
Bagno Wizna Special Protection Area (Birds Directive) 14,471 protected area overlaps with site 13,731

Habitats

IUCN Habitat Habitat detail Extent (% of site)
Forest -
Grassland -
Artificial/Terrestrial -
Wetlands (inland) -
For further information about the habitat classification please click here.


Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: Wizna Swamps. Downloaded from http://www.birdlife.org on 04/12/2022.