Ontologia

HydroBASINS lev08 watershed · #2080034340

Bassin de Gråfolåna

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 : Bykle, Forsand, Hjelmeland, Strand

96% lakePfafstetter: 25107574

Sub-basin area

559,6km²

Upstream area

559,8km²

Discharge

33,2m³/s

Mean elev.

768m

Administrative coverage

4 dept-equivalent regions (GADM L2)

5 intersecting protected areas

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

Species present

2 678 distinct species · 27 121 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

27 121 obs · 22 cellules
Obs. / cellule
≥ 7 545
3 986–7 544
1 317–3 985
241–1 316
< 241

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

Ecological tissue

Sample of 36 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 Gråfolåna : 24 espèces reliées par 83 interactions GloBI sur 7 types (connectance 13.2%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
36
Interactions affichées
83
Connectance
0.132
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°

2,7°C

Annual rain

2 021mm

Moisture idx (CMI)

0,81

Runoff

1 857mm/an

PET

385mm

AET

385mm

Mean slope

11,9°

Water table

542cm

Forest

23%

Crops

1%

Urban

0%

Protected

31%

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