Ontologia

HydroBASINS lev08 watershed · #2080033750

Bassin de Siljanelva

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 6 administrative regions : Kongsberg, Lardal, Larvik, Porsgrunn, Siljan +1

86% lakePfafstetter: 25105008

Sub-basin area

494,6km²

Upstream area

494,6km²

Discharge

10,86m³/s

Mean elev.

286m

Administrative coverage

6 dept-equivalent regions (GADM L2)

18 intersecting protected areas

9 more protected areas

  • Middagskollen

    IUCN Not Reported

    Emerald Network

    0.55 km² overlap

  • Røysa

    IUCN Ia

    Nature Reserve

    0.39 km² overlap

  • Mjøvann

    IUCN Ia

    Nature Reserve

    0.34 km² overlap

  • Veldre

    IUCN III

    Natural Monument

    0.34 km² overlap

  • Flata

    IUCN Ia

    Nature Reserve

    0.23 km² overlap

  • Larvik bøkeskog

    IUCN V

    Protected Landscape

    0.14 km² overlap

  • Stormyr

    IUCN Ia

    Nature Reserve

    0.11 km² overlap

  • Korseikåsen

    IUCN Ia

    Nature Reserve

    0.06 km² overlap

  • Kroken

    IUCN Not Reported

    Natural Monument

    0.00 km² overlap

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

Species present

6 011 distinct species · 77 476 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

77 476 obs · 17 cellules
Obs. / cellule
≥ 23 843
7 445–23 842
4 603–7 444
4 110–4 602
< 4 110

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

Ecological tissue

Sample of 38 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 Siljanelva : 27 espèces reliées par 103 interactions GloBI sur 6 types (connectance 14.7%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
103
Connectance
0.146
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°

5,2°C

Annual rain

791mm

Moisture idx (CMI)

0,37

Runoff

696mm/an

PET

493mm

AET

426mm

Mean slope

7,9°

Water table

368cm

Forest

94%

Crops

6%

Urban

1%

Protected

5%

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