Data Zone
The site was identified as internationally important for bird conservation in 2000 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.
Populations meeting IBA criteria ('trigger species') at the site:| Species | Red List | Season (year/s of estimate) | Size | IBA criteria |
|---|---|---|---|---|
| Eurasian Bittern Botaurus stellaris | LC | breeding (1996) | 200–300 pairs | B2 |
| Black Tern Chlidonias niger | LC | breeding (1996) | 400–500 pairs | B2 |
| Aquatic Warbler Acrocephalus paludicola | VU | breeding (1996) | 500–1,000 pairs | A1, B2 |
Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2000. The most recent assessment (2016) is shown below.
| IBA conservation assessment | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2016 | poor | high | not assessed |
| Whole site assessed? | State assessed by | Accuracy of information | |
| yes | population | good | |
| State (condition of the trigger species' populations) | |||||
|---|---|---|---|---|---|
| Species | Actual vs Reference (units) | % remaining | Result | ||
| Eurasian Bittern Botaurus stellaris | 75 / 15 (pairs) | 100 | good | ||
| White-winged Tern Chlidonias leucopterus | 250 / 500 (pairs) | 50 | poor | ||
| Black Tern Chlidonias niger | 200 / 50 (pairs) | 100 | good | ||
| Western Marsh-harrier Circus aeruginosus | 110 / 60 (pairs) | 100 | good | ||
| Circus cyaneus | 2 / 3 (pairs) | 67 | poor | ||
| Aquatic Warbler Acrocephalus paludicola | 150 / 85 (pairs) | 100 | good | ||
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Agricultural expansion and intensification | happening now | whole of population/area (>90%) | slow decline (1–10% over 3 generations) | high |
| Response (conservation actions taken for the trigger species and/or their habitats) | |||
|---|---|---|---|
| Designation | Planning | Action | Result |
| Not assessed | Not assessed | Not assessed | not assessed |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| - | Supoy Marsh | Zakaznik (-) | 3 |
| 1979 | Svidovets'kiy | Regional Zakaznik (IV) | 13 |
| 1979 | Boloto Supiy | Regional Zakaznik (IV) | 3 |
| 1994 | Usivs'kiy - 2 | State Zakaznik (IV) | - |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Wetlands (inland) | 100 | Standing freshwater; Rivers and streams; Water fringe vegetation; Fens, transition mires and springs |
| Land use | % of IBA |
|---|---|
| not utilised | 90 |
| fisheries/aquaculture | 5 |
| water management | - |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Supij marsh (Ukraine). Downloaded from
https://datazone.birdlife.org/site/factsheet/supij-marsh-iba-ukraine on 24/12/2024.