Wetland of International Importance (Ramsar Site) · nor
Nordre Oyeren
- Area
- 64 km²
- IUCN cat.
- Ia
- Year
- 1985
Overview
- Designation
- Wetland of International Importance (Ramsar Site)
- IUCN category
- Ia · Réserve naturelle intégrale
Protection stricte, accès limité aux fins scientifiques
- Established
- 1985
- Managing authority
- County Governor of Oslo and Viken
Source : WDPA (UNEP-WCMC, World Database on Protected Areas).
Species present
1 255 distinct species · 28 721 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Nordre Oyeren : 19 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 77 interactions GloBI sur 4 types (connectance 16.6%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology3 basins · 3 lakes · 10 rivers
Hydrology metrics for this exact territory
Stream length here
25,6km
Lake surface here
48,52km²
Basins crossed
3
Max stream order
7
Max drainage
39 828km²
Discharge in basins
124,7m³/s
Mean precip.
803mm/an
Mean T°
4,9°C
Moisture idx
0,34
Max snow
49%
Mean runoff
543mm/an
Mean elev. (basins)
221m
Watersheds crossing here
Lakes (3, top by area)
Rivers / streams (10, ord ≥ 4)
- Glommaord 7len here6.78 km1%total492 km
- Rudsholetord 4len here4.92 km100%total5 km
- Leiraord 4len here4.67 km6%total77 km
- Bergerbekkenord 1len here4.17 km64%total7 km
- Damsåaord 1len here1.63 km34%total5 km
- Gjellebekkenord 1len here1.55 km33%total5 km
- Nittelvaord 3len here1.15 km5%total22 km
- Rottebekkenord 3len here0.74 km13%total6 km
- Bjørndalsbekkenord 6len here≈ tangenttotal13 km
- Rødbekkbekkenord 1len here≈ tangenttotal5 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Location
Fond cartographique : OpenFreeMap · © OpenStreetMap contributors · Géométrie : nos sources (GADM/HydroBASINS/HydroLAKES/HydroRIVERS/WDPA)
- Centroid
- 59.86345, 11.15331
- Open in maps
- OpenStreetMap → · Satellite →
Species observed (Phase 2)
Listing species observed within this protected area requires the GBIF v2 partition × WDPA spatial overlay matview. Computing infrastructure pending.