Data Zone
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 |
|---|---|---|---|---|---|
| Common Goldeneye Bucephala clangula | LC | winter | 2004-2009 | 1,500-22,700 individuals | C3 |
| Goosander Mergus merganser | LC | winter | 2004-2009 | 400-6,500 individuals | C3 |
| Horned Grebe Podiceps auritus | VU | passage | 2004-2009 | 10-300 individuals | C2 |
| Eurasian Curlew Numenius arquata | NT | passage | 2007-2009 | 100 individuals | C1 |
| Little Gull Hydrocoloeus minutus | LC | passage | 2007-2009 | 1,500-5,000 individuals | C2 |
| Little Tern Sternula albifrons | LC | breeding | 2007-2009 | 40-50 breeding pairs | C6 |
| Common Tern Sterna hirundo | LC | breeding | 2007-2009 | 300-360 breeding pairs | C6 |
| Sandwich Tern Thalasseus sandvicensis | LC | passage | 2007-2009 | 2,000 individuals | C2 |
| Sandwich Tern Thalasseus sandvicensis | LC | breeding | 2007-2009 | 300-570 breeding pairs | C2, C6 |
| A4iii Species group - waterbirds | n/a | winter | 2004-2009 | 31,700 individuals | 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
| Most recent IBA monitoring assessment | |||
|---|---|---|---|
| Year of assessment | Threat score (pressure) | Condition score (state) | Action score (response) |
| 2010 | very high | very unfavourable | low |
| 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 | marine and freshwater aquaculture - subsistence/artisinal aquaculture | happening now | majority/most of area/population (50-90%) | slow but significant deterioration | high |
| Biological resource use | fishing & harvesting aquatic resources - unintentional effects: large scale | happening now | majority/most of area/population (50-90%) | moderate to rapid deterioration | high |
| Biological resource use | hunting & collecting terrestrial animals - intentional use (species being assessed is the target) | happening now | whole area/population (>90%) | very rapid to severe deterioration | very high |
| Climate change and severe weather | storms and floods | happening now | whole area/population (>90%) | very rapid to severe deterioration | very high |
| Climate change and severe weather | temperature extremes | happening now | whole area/population (>90%) | very rapid to severe deterioration | very high |
| Human intrusions and disturbance | recreational activities | happening now | whole area/population (>90%) | very rapid to severe deterioration | very high |
| Invasive and other problematic species and genes | invasive non-native/alien species/diseases - unspecified 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 - unspecified species | happening now | majority/most of area/population (50-90%) | moderate to rapid deterioration | 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 | whole area/population (>90%) | slow but significant deterioration | high |
| Pollution | garbage & solid waste | happening now | some of area/population (10-49%) | slow but significant deterioration | medium |
| Pollution | industrial & military effluents - type unknown/unrecorded | happening now | some of area/population (10-49%) | no or imperceptible deterioration | low |
| Residential and commercial development | tourism and recreation areas | likely in long term (beyond 4 years) | some of area/population (10-49%) | slow but significant deterioration | medium |
| Condition of key/trigger populations (state) | ||||||
|---|---|---|---|---|---|---|
| Scientific | Common | TargetPop | ActualPop | Units | Remaining | Result |
| Sternula albifrons | Little Tern | 45 | 15 | breeding pairs | 34 | very unfavourable |
| Sterna hirundo | Common Tern | 160 | 50 | breeding pairs | 32 | very unfavourable |
| Thalasseus sandvicensis | Sandwich Tern | 190 | 100 | breeding pairs | 53 | unfavourable |
| Conservation actions taken at site (response) | |||
|---|---|---|---|
| Conservation Designation | Management Planning | Conservation Action | Result |
| Some of site covered (10-49%) | No management plan exists but the management planning process has begun | Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity | low |
| Protected Area | Designation | Area (ha) | Relationship with IBA | Overlap with IBA (ha) |
|---|---|---|---|---|
| Żuław Gdańskich | Obszar Chronionego Krajobrazu | 31,700 | protected area overlaps with site | 0 |
| Wyspy Sobieszewskiej | Obszar Chronionego Krajobrazu | 1,393 | protected area overlaps with site | 0 |
| Vistula river mouth | Baltic Sea Protected Area (Helcom) | 1,747 | protected area contains site | 642 |
| Vistula River Mouth | Ramsar Site, Wetland of International Importance | 1,748 | protected area overlaps with site | 0 |
| Ujście Wisły | Special Protection Area (Birds Directive) | 1,748 | protected area overlaps with site | 642 |
| Ujscie Wisly | Baltic Sea Protected Area (HELCOM) | 1,751 | protected area overlaps with site | 0 |
| Środkowożuławski | Obszar Chronionego Krajobrazu | 3,024 | protected area overlaps with site | 0 |
| Ostoja w Ujściu Wisły | Site of Community Importance (Habitats Directive) | 884 | protected area overlaps with site | 446 |
| Mewia Łacha | Rezerwat Przyrody | 155 | protected area overlaps with site | 150 |
| Mewia Lacha (acha) | Nature Reserve | 150 | unknown | 150 |
| IUCN Habitat | Habitat detail | Extent (% of site) |
|---|---|---|
| Forest | Broadleaved deciduous woodland, Native coniferous woodland, Mixed woodland, Alluvial and very wet forest | - |
| Shrubland | Scrub | - |
| Grassland | Steppes and dry calcareous grassland, Humid grasslands | - |
| Wetlands (inland) | Standing freshwater, Rivers and streams, Water fringe vegetation | - |
| Coastline | Sand dunes & beaches, Salt marshes | - |
| Marine Intertidal | - |
| Land-use | Extent (% of site) |
|---|---|
| fisheries/aquaculture | - |
| forestry | - |
| tourism/recreation | - |
| agriculture | - |
| nature conservation and research | - |
| hunting | - |
Recommended citation
BirdLife International (2023) Important Bird Areas factsheet: Vistula river mouth. Downloaded from
http://www.birdlife.org on 24/03/2023.
