Luknajno lake (959)
Poland, Europe
Site overview
KBA status: confirmed
Year of last assessment: 2010
National site name: Jezioro Luknajno
Central coordinates: Latitude: 53.8167, Longitude: 21.6333
System: freshwater, terrestrial
Elevation (m): 100 to 100
Area of KBA (km2): 13.8116
Protected area coverage (%): 99.98
KBA classification: Regional
Legacy site: Yes
Site details
Site description: A very shallow (up to 3 m deep) nutrient-rich lake, with adjoining sedge-beds, transitional mires, alder Alnus woodland and willow Salix scrub. The lake shores are covered by beds of bulrush Scirpus, reed Phragmites and reed-mace Typha. Three-quarters of the lake bottom is covered by stonewort Chara and pondweed Potamogeton. The lake and a surrounding 100-m-wide belt are protected, but the area beyond is cultivated.
Rationale for qualifying as KBA: This site qualifies as a Key Biodiversity Area of international significance that was identified using previously established criteria and thresholds for the identification of Important Bird and Biodiversity Areas (IBAs) and for which available data indicate that it does not meet global KBA criteria and thresholds set out in the Global Standard.
Additional biodiversity: Large concentrations of waterbirds occur, regularly exceeding 20,000 individuals, mainly swans, ducks, Fulica atra, and gulls Larus. Species of global conservation concern that do not meet IBA criteria: Haliaeetus albicilla (1-2 non-breeding birds feed in the IBA, nesting nearby), Crex crex (4-6 pairs).
Habitats
Land use: fisheries/aquaculture (10%) | nature conservation and research (90%)
| IUCN Habitat | Coverage % | Habitat detail |
|---|---|---|
| Wetlands(Inland) | 54 | |
| Artificial - Terrestrial | 8 | |
| Other | 5 | |
| Forest | 1 | |
| Grassland | 32 |
Threats
Summary of threats to biodiversity at KBA: Water overflow from Œniardwy lake threatens the shallow end of this lake with nutrient pollution, following agricultural run-off in the surrounding area.