Data Zone
The site was identified as internationally important for bird conservation in 2010 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 |
|---|---|---|---|---|
| Ferruginous Duck Aythya nyroca | NT | breeding (2009) | 3–6 pairs | C6 |
| Corncrake Crex crex | LC | breeding (2004–2009) | 200–300 males | C1, C6 |
| Little Crake Zapornia parva | LC | breeding (2009) | 30–50 males | C6 |
| Common Little Bittern Ixobrychus minutus | LC | breeding (2004–2009) | 10–15 pairs | C6 |
| Black Tern Chlidonias niger | LC | breeding (2004–2009) | 60–100 pairs | C6 |
| Short-eared Owl Asio flammeus | LC | breeding (2004–2009) | 1–2 pairs | C6 |
| A4iii Species group - waterbirds | n/a | passage (2004–2009) | 20,000 birds | C4 |
Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2010. The most recent assessment (2010) is shown below.
| IBA conservation assessment | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2010 | moderate | very high | low |
| Whole site assessed? | State assessed by | Accuracy of information | |
| yes | population | medium | |
| State (condition of the trigger species' populations) | |||||
|---|---|---|---|---|---|
| Species | Actual vs Reference (units) | % remaining | Result | ||
| Ferruginous Duck Aythya nyroca | 4 / 2 (pairs) | 100 | not assessed | ||
| Corncrake Crex crex | 300 / 50 (males) | 100 | good | ||
| Little Crake Zapornia parva | 50 / 60 (males) | 84 | moderate | ||
| Ixobrychus minutus | 15 / 20 (pairs) | 75 | moderate | ||
| Black Tern Chlidonias niger | 140 / 140 (pairs) | 100 | not assessed | ||
| Short-eared Owl Asio flammeus | 2 / 2 (pairs) | 100 | not assessed | ||
| State (condition of the trigger species' habitats) | |||
|---|---|---|---|
| Habitat | Quantity (% remaining) | Quality (% carrying capacity) | Result |
| Grassland | moderate (70–90%) | moderate (70–90%) | poor |
| Wetlands (inland) | moderate (70–90%) | moderate (70–90%) | poor |
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Invasive and other problematic species and genes | happening now | whole of population/area (>90%) | moderate decline (10–30% over 3 generations) | very high |
| Agricultural expansion and intensification | happening now | most of population/area (50–90%) | rapid decline (>30% over 3 generations) | very high |
| Human intrusions and disturbance | happening now | most of population/area (50–90%) | moderate decline (10–30% over 3 generations) | high |
| Biological resource use | happening now | most of population/area (50–90%) | slow decline (1–10% over 3 generations) | high |
| Natural system modifications | happening now | some of population/area (10–49%) | rapid decline (>30% over 3 generations) | high |
| Pollution | happening now | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Transportation and service corridors | happening now | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Residential and commercial development | likely in long term (>4 years) | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Energy production and mining | happening now | few individuals/small area (<10%) | slow decline (1–10% over 3 generations) | low |
| No known threats | happening now | few individuals/small area (<10%) | no or slight decline (<1% over 3 generations) | low |
| Response (conservation actions taken for the trigger species and/or their habitats) | |||
|---|---|---|---|
| Designation | Planning | Action | Result |
| Whole area (>90%) covered by appropriate conservation designation | No management planning has taken place | Some limited conservation initiatives are in place | low |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Grassland | 76 | Humid grasslands; Mesophile grasslands |
| Wetlands (inland) | 15 | Standing freshwater; Water fringe vegetation; Fens, transition mires and springs |
| Artificial/Terrestrial | 6 | Highly improved re-seeded landscapes; Arable land |
| Forest | 3 | Native coniferous woodland; Mixed woodland; Alluvial and very wet forest |
| Land use | % of IBA |
|---|---|
| agriculture | 85 |
| fisheries/aquaculture | 10 |
| forestry | 5 |
| hunting | - |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Tysmienica river valley (Poland). Downloaded from
https://datazone.birdlife.org/site/factsheet/tysmienica-river-valley-iba-poland on 23/12/2024.