Ontologia

HydroBASINS lev08 watershed · #2080033610

Bassin de Lomma

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 4 administrative regions : Bærum, Hole, Lier, Ringerike

13% lakePfafstetter: 25103006

Sub-basin area

184,8km²

Upstream area

184,9km²

Discharge

3,62m³/s

Mean elev.

326m

Administrative coverage

4 dept-equivalent regions (GADM L2)

19 intersecting protected areas

10 more protected areas

  • Kulpåsen

    IUCN Ia

    Nature Reserve

    0.36 km² overlap

  • Kolsåsstupene

    IUCN Ia

    Nature Reserve

    0.36 km² overlap

  • Ramsåsen

    IUCN Not Reported

    Emerald Network

    0.18 km² overlap

  • Enli

    IUCN Ia

    Nature Reserve

    0.13 km² overlap

  • Kolsåstoppen

    IUCN Ia

    Nature Reserve

    0.10 km² overlap

  • Vensåsmyra

    IUCN Ia

    Nature Reserve

    0.06 km² overlap

  • Kampebråten

    IUCN III

    Natural Monument

    0.00 km² overlap

  • Heggelia

    IUCN III

    Natural Monument

    0.00 km² overlap

  • Tanum

    IUCN III

    Natural Monument

    0.00 km² overlap

  • Jongsåsveien

    IUCN III

    Natural Monument

    0.00 km² overlap

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

Species present

8 125 distinct species · 156 486 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

156 486 obs · 8 cellules
Obs. / cellule
≥ 53 576
53 576–53 575
20 715–53 575
12 191–20 714
< 12 191

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

Ecological tissue

Sample of 34 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 Lomma : 23 espèces reliées par 87 interactions GloBI sur 6 types (connectance 15.5%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
34
Interactions affichées
87
Connectance
0.155
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°

4,3°C

Annual rain

773mm

Moisture idx (CMI)

0,30

Runoff

644mm/an

PET

536mm

AET

450mm

Mean slope

7,7°

Water table

346cm

Forest

79%

Crops

13%

Urban

15%

Protected

8%

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