Ontologia

HydroBASINS lev08 watershed · #2080037040

Bassin de Bjerkaelva

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 2 administrative regions : Hemnes, Rana

Coastal basin 34% lakePfafstetter: 25109500

Sub-basin area

539,1km²

Upstream area

539,1km²

Discharge

1,82m³/s

Mean elev.

533m

Administrative coverage

2 dept-equivalent regions (GADM L2)

5 intersecting protected areas

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

Species present

1 422 distinct species · 11 241 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

11 241 obs · 24 cellules
Obs. / cellule
≥ 2 705
993–2 704
623–992
215–622
< 215

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

Ecological tissue

Sample of 38 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 Bjerkaelva : 28 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 95 interactions GloBI sur 6 types (connectance 12.8%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
39
Interactions affichées
95
Connectance
0.128
Patrimoniales
2
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°

2,0°C

Annual rain

1 548mm

Moisture idx (CMI)

0,76

Runoff

1 558mm/an

PET

375mm

AET

373mm

Mean slope

12,5°

Water table

381cm

Forest

48%

Crops

0%

Urban

0%

Protected

1%

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