Ontologia

HydroBASINS lev08 watershed · #2080031410

Bassin de Ljusnan

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 : Bollnäs, Ockelbo, Söderhamn

123% lakePfafstetter: 24450810

Sub-basin area

1 048,4km²

Upstream area

20 172,9km²

Discharge

166,16m³/s

Mean elev.

121m

Administrative coverage

Hydrographic chain

▼ Drains into

Outlet (drains to ocean / endorheic)

▲ Receives from 2 basins

3 dept-equivalent regions (GADM L2)

30 intersecting protected areas

21 more protected areas

  • 2014012 Skidtjärnsberget

    IUCN Ia

    Nature Reserve

    0.39 km² overlap

  • 2040452 Långnäsudden

    IUCN Ia

    Nature Reserve

    0.37 km² overlap

  • SK 794-2006

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

    0.34 km² overlap

  • Hästhagsberget

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    0.28 km² overlap

  • 2000707 Hästhagsberget

    IUCN Ia

    Nature Reserve

    0.28 km² overlap

  • Hästhagsberget

    IUCN Ia

    Natura 2000 SCI

    0.28 km² overlap

  • SK 1038-2005

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

    0.25 km² overlap

  • SK 48-2008

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

    0.23 km² overlap

  • SK 513-2002

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

    0.20 km² overlap

  • SK 266-2015

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

    0.14 km² overlap

  • SK 253-2018

    IUCN Ia

    Habitat Protection Area

    0.12 km² overlap

  • SK 66-2020

    IUCN Ia

    Habitat Protection Area

    0.10 km² overlap

  • SK 190-2017

    IUCN Ia

    Habitat Protection Area

    0.09 km² overlap

  • SK 413-2015

    IUCN Ia

    Habitat Protection Area

    0.09 km² overlap

  • SK 1128-2002

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

    0.09 km² overlap

  • SK 790-2002

    IUCN Ia

    Habitat Protection Area

    0.08 km² overlap

  • SK 382-2017

    IUCN Ia

    Habitat Protection Area

    0.08 km² overlap

  • n/a.

    IUCN IV

    Nature conservation agreement, County Administrative Board

    0.08 km² overlap

  • SK 232-2018

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

    0.07 km² overlap

  • SK 366-2007

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

    0.07 km² overlap

  • SK 210-2008

    IUCN Ia

    Habitat Protection Area

    0.07 km² overlap

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

Species present

6 402 distinct species · 187 058 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

187 058 obs · 43 cellules
Obs. / cellule
≥ 12 358
8 907–12 357
5 244–8 906
3 711–5 243
< 3 711

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

Ecological tissue

Sample of 32 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 Ljusnan : 23 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 99 interactions GloBI sur 4 types (connectance 16.6%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
35
Interactions affichées
99
Connectance
0.166
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°

4,1°C

Annual rain

638mm

Moisture idx (CMI)

0,12

Runoff

287mm/an

PET

564mm

AET

432mm

Mean slope

3,9°

Water table

280cm

Forest

84%

Crops

1%

Urban

0%

Protected

0%

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