Ontologia

HydroBASINS lev08 watershed · #2080031310

Bassin de Svågan

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 : Hudiksvall, Ljusdal, Nordanstig, Söderhamn, Ånge

100% lakePfafstetter: 24450600

Sub-basin area

2 258,5km²

Upstream area

2 258,7km²

Discharge

22,02m³/s

Mean elev.

217m

Administrative coverage

5 dept-equivalent regions (GADM L2)

30 intersecting protected areas

21 more protected areas

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

Species present

9 219 distinct species · 432 401 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

432 401 obs · 96 cellules
Obs. / cellule
≥ 62 280
7 957–62 279
4 500–7 956
2 870–4 499
< 2 870

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

Ecological tissue

Sample of 30 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 Svågan : 20 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 91 interactions GloBI sur 5 types (connectance 15.3%, filtre Serrano α=0.2). 15 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
35
Interactions affichées
91
Connectance
0.153
Patrimoniales
1
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°

3,1°C

Annual rain

650mm

Moisture idx (CMI)

0,17

Runoff

278mm/an

PET

539mm

AET

425mm

Mean slope

5,0°

Water table

296cm

Forest

89%

Crops

2%

Urban

0%

Protected

1%

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