NO050
Nordre Øyeren & Sørumsneset This is an IBA in Danger! 


IBA Justification

The site was identified as important in 2014 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species'):
Species Current IUCN Red List Category Season Year(s) Population estimate at site IBA criteria met
Whooper Swan Cygnus cygnus LC winter 2004-2013 230-1,040 individuals B1i, B3
Barnacle Goose Branta leucopsis LC passage 2004-2013 671-1,500 individuals B1i
Pink-footed Goose Anser brachyrhynchus LC passage 2004-2013 260-1,700 individuals B1i
Common Teal Anas crecca LC passage 2004-2013 1,265-5,400 individuals B1i
Eurasian Curlew Numenius arquata NT passage 2004-2014 11-292 individuals A1
Osprey Pandion haliaetus LC breeding 2004-2013 6-9 breeding pairs B2

The current IUCN Red List category may differ from that which was valid at the time of IBA criteria assessment (2014).


IBA Conservation

IBA conservation assessment
Year of assessment (most recent) State (condition) Pressure (threat) Response (action)
2020 not assessed very high medium
Was the whole site assessed? State assessed by Accuracy of information
yes unset good

State (condition of the trigger species' populations)
Scientific name Common name Reference population Actual population Units % of population remaining Result
Cygnus cygnus Whooper Swan 1040 715 individuals 69 unfavourable
Branta leucopsis Barnacle Goose 2200 2164 individuals 99 favourable
Anser brachyrhynchus Pink-footed Goose 1700 350 individuals 21 very unfavourable
Mareca penelope Eurasian Wigeon 800 738 individuals 93 favourable
Anas crecca 1265 2020 individuals 100 favourable
Crex crex Corncrake 1 1 individuals 100 favourable
Numenius arquata Eurasian Curlew 292 333 individuals 100 favourable
Pandion haliaetus Osprey 9 9 breeding pairs 100 favourable

Pressure (threats to the trigger species and/or their habitats)
Threat level 1 Threat level 2 Timing Scope Severity Result
Agricultural expansion and intensification annual & perennial non-timber crops - agro-industry farming likely in long term (beyond 4 years) small area/few individuals (<10%) slow but significant deterioration low
Agricultural expansion and intensification livestock farming and ranching (includes forest grazing) - agro-industry grazing, ranching or farmin happening now small area/few individuals (<10%) no or imperceptible deterioration low
Biological resource use hunting & collecting terrestrial animals - intentional use (species being assessed is the target) happening now small area/few individuals (<10%) slow but significant deterioration low
Climate change and severe weather storms and floods happening now some of area/population (10-49%) slow but significant deterioration medium
Human intrusions and disturbance recreational activities happening now some of area/population (10-49%) slow but significant deterioration medium
Invasive and other problematic species and genes problematic native species/diseases - named species happening now some of area/population (10-49%) slow but significant deterioration medium
Natural system modifications dams & water management/use - abstraction of surface water (commercial use) happening now whole area/population (>90%) very rapid to severe deterioration very high
Pollution domestic & urban waste water - type unknown/unrecorded happening now some of area/population (10-49%) slow but significant deterioration medium

Response (conservation actions taken for the trigger species and/or their habitats)
Protected-area designation Management planning Other conservation action Result
Whole area of site (>90%) covered by appropriate conservation designation A comprehensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species Some limited conservation initiatives are in place medium
For more information about IBA conservation status, please click here

IBA Protection

Protected area (PA) PA designation PA area (ha) Relationship of PA with IBA Overlap of PA with IBA (ha)
Sørumsneset Naturreservat 112 protected area contained by site 0
Rud Nature Reserve 12 protected area is adjacent to site 0
Råsok Naturreservat 10 protected area is adjacent to site 0
Nordre Øyeren Naturreservat 6,257 protected area contained by site 6,260
Nordre Oyeren Ramsar Site, Wetland of International Importance 6,256 protected area contained by site 6,260

Habitats

Habitat (IUCN level 1) Habitat detail Extent (% of site)
Forest Broadleaved deciduous woodland, Native coniferous woodland, Mixed woodland -
Wetlands (inland) Standing freshwater, Rivers and streams -
Artificial/Terrestrial Arable land -
For more information about the IUCN Habitat classification, please click here.

Land use

Land-use Extent (% of site)
hunting -
agriculture -
tourism/recreation -
water management -


Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Nordre Øyeren & Sørumsneset. Downloaded from https://datazone.birdlife.org/site/factsheet/nordre-øyeren-&-sørumsneset-iba-norway on 22/02/2024.