Miedwie site (917)
Poland, Europe
Site overview
KBA status: confirmed
Global KBA criteria: D1a
Year of last assessment: 2010
National site name: Ostoja Miedwie
Central coordinates: Latitude: 53.2667, Longitude: 14.8667
System: freshwater, terrestrial
Area of KBA (km2): 165.04086
Protected area coverage (%): 100.00
KBA classification: Global
Legacy site: Yes
Site details
Site description: A large lake with a moderate level of nutrients, bordered to the south and west by extensive chalk fens and meadows, and to the east by adjoining alder Alnus forest. The P³onia river goes through the lake and flows into D¹bie lake. The lake is a drinking water reservoir for the city of Szczecin and also supports a fishery.
Rationale for qualifying as KBA: This site qualifies as a Key Biodiversity Area of international significance that meets the thresholds for at least one criterion described in the Global Standard for the Identification of KBAs.
Additional biodiversity: Up to 12,000-14,000 Anser fabalis and A. albifrons stage here in autumn, with up to 1,500 such birds in winter. Breeding species of global conservation concern that do not meet IBA criteria: Haliaeetus albicilla (one pair feeds in the area, nesting nearby), Crex crex (one pair), Acrocephalus paludicola (nine singing males).
Habitats
Land use: agriculture (30%) | fisheries/aquaculture (20%) | hunting | water management (50%)
| IUCN Habitat | Coverage % | Habitat detail |
|---|---|---|
| Artificial - Terrestrial | 23 | |
| Grassland | 44 | |
| Wetlands(Inland) | 28 | |
| Other | 1 | |
| Forest | 4 |
Threats
Summary of threats to biodiversity at KBA: Pollution from agricultural sources affects drinking water and poses a threat to the site.
| Threat level 1 | Threat level 2 | Threat level 3 | Timing |
|---|---|---|---|
| Agriculture & aquaculture | Annual & perennial non-timber crops | Small-holder farming | Ongoing |
| Natural system modifications | Fire & fire suppression | Increase in fire frequency/intensity | Ongoing |
| Biological resource use | Gathering terrestrial plants | Unintentional effects (species being assessed is not the target) | Ongoing |
| Agriculture & aquaculture | Marine & freshwater aquaculture | Subsistence/artisinal aquaculture | Ongoing |
| Natural system modifications | Dams & water management/use | Dams (size unknown) | Ongoing |
| Biological resource use | Hunting & collecting terrestrial animals | Intentional use (species being assessed is the target) | Ongoing |
| Biological resource use | Hunting & collecting terrestrial animals | Persecution/control | Ongoing |
| Biological resource use | Fishing & harvesting aquatic resources | Unintentional effects: large scale (species being assessed is not the target) [harvest] | Ongoing |
| Invasive & other problematic species, genes & diseases | Invasive non-native/alien species/diseases | Unspecified species | Ongoing |
| Invasive & other problematic species, genes & diseases | Problematic native species/diseases | Unspecified species | Ongoing |
| Pollution | Domestic & urban waste water | Type Unknown/Unrecorded | Ongoing |
| Pollution | Agricultural & forestry effluents | Type Unknown/Unrecorded | Ongoing |
| Natural system modifications | Other ecosystem modifications | Only in the past and unlikely to return | |
| Residential & commercial development | Housing & urban areas | Ongoing | |
| Residential & commercial development | Commercial & industrial areas | Ongoing | |
| Residential & commercial development | Tourism & recreation areas | Ongoing | |
| Energy production & mining | Renewable energy | Only in the future | |
| Transportation & service corridors | Utility & service lines | Ongoing | |
| Energy production & mining | Mining & quarrying | Ongoing | |
| Transportation & service corridors | Roads & railroads | Only in the future | |
| Human intrusions & disturbance | Recreational activities | Ongoing | |
| Human intrusions & disturbance | Work & other activities | Ongoing |