Nordre Øyeren & Sørumsneset (3172)
Norway, Europe
Site overview
KBA status: confirmed
Year of last assessment: 2014
National site name: Nordre Øyeren & Sørumsneset
Central coordinates: Latitude: 59.8833, Longitude: 11.1500
System: freshwater, terrestrial
Elevation (m): 101 to 150
Area of KBA (km2): 63.838
Protected area coverage (%): 99.73
KBA classification: Global/Regional TBD
Legacy site: Yes
Site details
Site description: The largest inland delta in Scandinavia, formed by the mouths of the Glomma, Leira and Nilelva rivers flowing into Lake Øyeren. The northern part is shallow, with inland areas covered by deciduous forest, scrub, grassland and agricultural land.
Rationale for qualifying as KBA: This site qualifies as a Key Biodiversity Area of international significance because it meets one or more previously established criteria and thresholds for identifying sites of biodiversity importance (including Important Bird and Biodiversity Areas, Alliance for Zero Extinction sites, and Key Biodiversity Areas)
Additional biodiversity: An important area for migrating waterbirds, and for swans Cygnus in winter, as well as for breeding Pandion haliaetus. Breeding species of global conservation concern which do not meet IBA criteria: Crex crex (1-2 pairs).
Delineation rationale: Mainly adopted from official polygons for Protected Areas.
Habitats
Land use: agriculture (5%) | hunting (50%) | tourism/recreation (90%) | water management (90%)
| IUCN Habitat | Coverage % | Habitat detail |
|---|---|---|
| Forest | 5 | |
| Wetlands(Inland) | 90 | |
| Artificial - Terrestrial | 5 |
Threats
Summary of threats to biodiversity at KBA: Hunting disrupts and disturbs staging and wintering waterbirds significantly. Nordre Øyeren Bird Observatory has published reports dating back to 1976, and has carried out various projects, including studies of Dendrocopos leucotos and systematic waterfowl surveys.
| Threat level 1 | Threat level 2 | Threat level 3 | Timing |
|---|---|---|---|
| Agriculture & aquaculture | Annual & perennial non-timber crops | Agro-industry farming | Only in the future |
| Agriculture & aquaculture | Livestock farming & ranching | Agro-industry grazing, ranching or farming | Ongoing |
| Natural system modifications | Dams & water management/use | Abstraction of surface water (commercial use) | Ongoing |
| Biological resource use | Hunting & collecting terrestrial animals | Intentional use (species being assessed is the target) | Ongoing |
| Invasive & other problematic species, genes & diseases | Problematic native species/diseases | Named species | Ongoing |
| Pollution | Domestic & urban waste water | Type Unknown/Unrecorded | Ongoing |
| Human intrusions & disturbance | Recreational activities | Ongoing | |
| Climate change & severe weather | Storms & flooding | Ongoing |