Ontologia

HydroBASINS lev08 watershed · #2080230410

Bassin de Norrån

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 : Avesta, Hofors, Sandviken

65% lakePfafstetter: 24460014

Sub-basin area

250km²

Upstream area

250km²

Discharge

2,57m³/s

Mean elev.

96m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Dalälven123 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

3 dept-equivalent regions (GADM L2)

30 intersecting protected areas

21 more protected areas

  • Ista

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    1.51 km² overlap

  • Ista

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    1.51 km² overlap

  • Ista

    IUCN V

    Natura 2000 SCI

    1.51 km² overlap

  • Ista

    IUCN V

    Natura 2000 SPA

    1.51 km² overlap

  • Skissen

    IUCN IV

    Natura 2000 SCI

    1.05 km² overlap

  • Skissen

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    1.05 km² overlap

  • 2022017 Skissen

    IUCN IV

    Nature Reserve

    1.05 km² overlap

  • Gårdsjöarna

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    0.82 km² overlap

  • Gårdsjöarna

    IUCN Not Assigned

    Natura 2000 SCI

    0.82 km² overlap

  • SK 522-2018

    IUCN IV

    Nature conservation agreement

    0.56 km² overlap

  • 2000307 Köpmansmossens domänreservat

    IUCN Ia

    Nature Reserve

    0.27 km² overlap

  • Köpmansmossen

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    0.27 km² overlap

  • Köpmansmossen

    IUCN Ia

    Natura 2000 SCI

    0.27 km² overlap

  • Stora Finnsjön

    IUCN Not Assigned

    Natura 2000 SCI

    0.19 km² overlap

  • Stora Finnsjön

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    0.19 km² overlap

  • A455750

    IUCN Not Applicable

    Voluntary set-aside areas

    0.12 km² overlap

  • Kolbosveden

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    0.10 km² overlap

  • Kolbosveden

    IUCN Not Assigned

    Natura 2000 SCI

    0.10 km² overlap

  • Bärsån

    IUCN Not Assigned

    Natura 2000 SCI

    0.10 km² overlap

  • Bärsån

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    0.10 km² overlap

  • 2000295 Bärsåns domänreservat

    IUCN Not Assigned

    Nature Reserve

    0.10 km² overlap

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

Species present

2 490 distinct species · 28 355 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

28 355 obs · 9 cellules
Obs. / cellule
≥ 6 808
6 808–6 807
3 700–6 807
2 583–3 699
< 2 583

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

Ecological tissue

Sample of 28 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 Norrån : 19 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 77 interactions GloBI sur 4 types (connectance 16.6%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
31
Interactions affichées
77
Connectance
0.166
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°

4,9°C

Annual rain

617mm

Moisture idx (CMI)

0,06

Runoff

325mm/an

PET

577mm

AET

434mm

Mean slope

2,2°

Water table

178cm

Forest

87%

Crops

1%

Urban

0%

Protected

7%

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