Lake Dättern (863)
Sweden, Europe
Site overview
KBA status: confirmed
Year of last assessment: 2000
National site name: Dättern
Central coordinates: Latitude: 58.3883, Longitude: 12.6018
System: freshwater, terrestrial
Elevation (m): 43 to 50
Area of KBA (km2): 40.0653
Protected area coverage (%): 99.99
KBA classification: Regional
Legacy site: Yes
Site details
Site description: Dättern is an almost enclosed bay of Lake Vänern with a Phragmites- dominated shoreline. Large areas of sand and clay are exposed when the water-level is low. The sound connecting Dättern with the main lake becomes ice-free early in the spring. The bay is surrounded by grazed meadows, and there is an ancient Alnus wood, 73 ha in size.
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: The expanses of sand and clay form important resting areas for waders such as Calidris ferruginea. Species of global conservation concern that do not meet IBA criteria: Haliaeetus albicilla (non-breeding) and Gallinago media (passage).
Delineation rationale: Old area: 3320ha Changed due to more accurate information on borders and size. /Robert Ekblom (2007-10-23)
Habitats
Land use: agriculture
| IUCN Habitat | Coverage % | Habitat detail |
|---|---|---|
| Wetlands(Inland) | 98 | |
| Grassland | 2 |
Threats
Summary of threats to biodiversity at KBA: Overgrown lakeside meadows are being invaded by scrub.
| Threat level 1 | Threat level 2 | Threat level 3 | Timing |
|---|---|---|---|
| Biological resource use | Logging & wood harvesting | Intentional use: subsistence/small scale (species being assessed is the target) [harvest] | Ongoing |
| Agriculture & aquaculture | Annual & perennial non-timber crops | Shifting agriculture | Only in the future |