Data Zone
The site was identified as internationally important for bird conservation in 2014 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.
Populations meeting IBA criteria ('trigger species') at the site:| Species | Red List | Season (year/s of estimate) | Size | IBA criteria |
|---|---|---|---|---|
| Whooper Swan Cygnus cygnus | LC | winter (2004–2013) | 230–1,040 birds | B1i, B3 |
| Barnacle Goose Branta leucopsis | LC | passage (2004–2013) | 671–1,500 birds | B1i |
| Pink-footed Goose Anser brachyrhynchus | LC | passage (2004–2013) | 260–1,700 birds | B1i |
| Common Teal Anas crecca | LC | passage (2004–2013) | 1,265–5,400 birds | B1i |
| Eurasian Curlew Numenius arquata | NT | passage (2004–2014) | 11–292 birds | A1 |
| Osprey Pandion haliaetus | LC | breeding (2004–2013) | 6–9 pairs | B2 |
Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2014. The most recent assessment (2020) is shown below.
| IBA conservation assessment | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2020 | very poor | very high | medium |
| Whole site assessed? | State assessed by | Accuracy of information | |
| yes | population | good | |
| State (condition of the trigger species' populations) | |||||
|---|---|---|---|---|---|
| Species | Actual vs Reference (units) | % remaining | Result | ||
| Whooper Swan Cygnus cygnus | 715 / 1,040 (birds) | 69 | poor | ||
| Barnacle Goose Branta leucopsis | 2,164 / 2,200 (birds) | 99 | good | ||
| Pink-footed Goose Anser brachyrhynchus | 350 / 1,700 (birds) | 21 | very poor | ||
| Eurasian Wigeon Mareca penelope | 738 / 800 (birds) | 93 | good | ||
| Anas crecca | 2,020 / 1,265 (birds) | 100 | good | ||
| Corncrake Crex crex | 1 / 1 (birds) | 100 | good | ||
| Eurasian Curlew Numenius arquata | 333 / 292 (birds) | 100 | good | ||
| Osprey Pandion haliaetus | 9 / 9 (pairs) | 100 | good | ||
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Natural system modifications | happening now | whole of population/area (>90%) | rapid decline (>30% over 3 generations) | very high |
| Human intrusions and disturbance | happening now | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Invasive and other problematic species and genes | happening now | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Climate change and severe weather | happening now | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Pollution | happening now | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Biological resource use | happening now | few individuals/small area (<10%) | slow decline (1–10% over 3 generations) | low |
| Agricultural expansion and intensification | happening now | few individuals/small area (<10%) | no or slight decline (<1% over 3 generations) | low |
| Response (conservation actions taken for the trigger species and/or their habitats) | |||
|---|---|---|---|
| Designation | Planning | Action | Result |
| Whole area (>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 |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| 1975 | Nordre Øyeren | Naturreservat (IV) | 98 |
| 1992 | Sørumsneset | Naturreservat (Ia) | 2 |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Wetlands (inland) | 90 | Standing freshwater; Rivers and streams |
| Artificial/Terrestrial | 5 | Arable land |
| Forest | 5 | Broadleaved deciduous woodland; Native coniferous woodland; Mixed woodland |
| Land use | % of IBA |
|---|---|
| tourism/recreation | 90 |
| water management | 90 |
| hunting | 50 |
| agriculture | 5 |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Nordre Øyeren & Sørumsneset (Norway). Downloaded from
https://datazone.birdlife.org/site/factsheet/nordre-øyeren-&-sørumsneset-iba-norway on 23/12/2024.