Ontologia

HydroBASINS lev08 watershed · #2080240520

Bassin de Hæra

A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.

Crosses 5 administrative regions : Askim, Aurskog-Høland, Eidsberg, Marker, Trøgstad

10% lakePfafstetter: 25102104

Sub-basin area

239,3km²

Upstream area

239,3km²

Discharge

3,82m³/s

Mean elev.

172m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Glomma65 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

5 dept-equivalent regions (GADM L2)

14 intersecting protected areas

5 more protected areas

  • Sletner

    IUCN Ia

    Nature Reserve

    0.51 km² overlap

  • Slitu

    IUCN Ia

    Nature Reserve

    0.08 km² overlap

  • Holene

    IUCN Ia

    Nature Reserve

    0.06 km² overlap

  • Lekum

    IUCN Ia

    Nature Reserve

    0.02 km² overlap

  • Rud østre

    IUCN Not Reported

    Natural Monument

    0.00 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

4 055 distinct species · 88 099 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

88 099 obs · 8 cellules
Obs. / cellule
≥ 26 683
26 683–26 682
9 234–26 682
9 015–9 233
< 9 015

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Ecological tissue

Sample of 39 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).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Hæra : 29 espèces reliées par 109 interactions GloBI sur 5 types (connectance 14.7%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
39
Interactions affichées
109
Connectance
0.147
Patrimoniales
0
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

5,5°C

Annual rain

809mm

Moisture idx (CMI)

0,35

Runoff

504mm/an

PET

526mm

AET

448mm

Mean slope

3,6°

Water table

277cm

Forest

65%

Crops

31%

Urban

7%

Protected

2%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)