Ontologia

HydroBASINS lev08 watershed · #2080244230

Bassin de Straumen

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 7 administrative regions : Bø, Drangedal, Kviteseid, Nome, Sauherad +2

81% lakePfafstetter: 25106021

Sub-basin area

713,9km²

Upstream area

3 626,6km²

Discharge

92,66m³/s

Mean elev.

312m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Bøelva942 km²

▲ Receives from 2 basins

7 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

4 763 distinct species · 106 893 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

106 893 obs · 28 cellules
Obs. / cellule
≥ 33 374
13 557–33 373
3 132–13 556
1 192–3 131
< 1 192

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 Straumen : 31 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 102 interactions GloBI sur 6 types (connectance 13.1%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
40
Interactions affichées
102
Connectance
0.131
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°

4,7°C

Annual rain

833mm

Moisture idx (CMI)

0,39

Runoff

665mm/an

PET

506mm

AET

438mm

Mean slope

10,3°

Water table

473cm

Forest

92%

Crops

2%

Urban

0%

Protected

4%

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