Ontologia

HydroBASINS lev08 watershed · #2080033200

Bassin de Nolån

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 12 administrative regions : Alingsås, Bollebygd, Borås, Göteborg, Härryda +7

Coastal basin 52% lakePfafstetter: 24479070

Sub-basin area

1 906,6km²

Upstream area

1 906,6km²

Discharge

1,33m³/s

Mean elev.

89m

Administrative coverage

12 dept-equivalent regions (GADM L2)

4 more

30 intersecting protected areas

21 more protected areas

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

Species present

15 392 distinct species · 2 444 495 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 444 495 obs · 68 cellules
Obs. / cellule
≥ 339 902
105 351–339 901
27 245–105 350
14 515–27 244
< 14 515

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

Ecological tissue

Sample of 34 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 Nolån : 26 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 75 interactions GloBI sur 5 types (connectance 13.4%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
34
Interactions affichées
75
Connectance
0.134
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°

7,0°C

Annual rain

852mm

Moisture idx (CMI)

0,34

Runoff

524mm/an

PET

560mm

AET

467mm

Mean slope

3,1°

Water table

250cm

Forest

73%

Crops

13%

Urban

10%

Protected

6%

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