Ontologia

HydroBASINS lev08 watershed · #2080151830

Bassin de Ältsån

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 3 administrative regions across 2 countries : Rana, Sorsele, Storuman

49% lakePfafstetter: 24438028

Sub-basin area

1 089,1km²

Upstream area

1 089,2km²

Discharge

30,25m³/s

Mean elev.

778m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Umeälven417 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

3 dept-equivalent regions (GADM L2)

12 intersecting protected areas

  • Vindelfjällen

    IUCN Ib

    Natura 2000 SPA

    1018.92 km² overlap

  • Vindelfjällen

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    1018.92 km² overlap

  • 2001842 Vindelfjällen

    IUCN Ib

    Nature Reserve

    1018.92 km² overlap

  • Vindelfjällen

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    1018.92 km² overlap

  • Vindelfjällen

    IUCN Ib

    Natura 2000 SCI

    1018.92 km² overlap

  • Tärnasjön

    IUCN Ia

    Wetland of International Importance (Ramsar Site)

    232.54 km² overlap

  • Vindelälven

    IUCN Not Reported

    Wetland of International Importance (Ramsar Site)

    0.35 km² overlap

  • 1073656773

    IUCN Not Applicable

    Voluntary set-aside areas

    0.17 km² overlap

  • 1073656770

    IUCN Not Applicable

    Voluntary set-aside areas

    0.15 km² overlap

3 more protected areas

  • 1073656771

    IUCN Not Applicable

    Voluntary set-aside areas

    0.11 km² overlap

  • 1073656768

    IUCN Not Applicable

    Voluntary set-aside areas

    0.09 km² overlap

  • 1073656764

    IUCN Not Applicable

    Voluntary set-aside areas

    0.00 km² overlap

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

Species present

1 525 distinct species · 11 162 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

11 162 obs · 44 cellules
Obs. / cellule
≥ 1 119
807–1 118
290–806
124–289
< 124

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

Ecological tissue

Sample of 40 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 Ältsån : 30 espèces reliées par 84 interactions GloBI sur 3 types (connectance 10.8%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
40
Interactions affichées
84
Connectance
0.108
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°

-0,3°C

Annual rain

840mm

Moisture idx (CMI)

0,54

Runoff

869mm/an

PET

381mm

AET

350mm

Mean slope

7,0°

Water table

208cm

Forest

55%

Crops

0%

Urban

0%

Protected

93%

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