Ontologia

HydroBASINS lev08 watershed · #2080031730

Bassin de Råstaån

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 11 administrative regions : Danderyd, Järfälla, Lidingö, Sollentuna, Solna +6

Coastal basin 36% lakePfafstetter: 24471009

Sub-basin area

322km²

Upstream area

322km²

Discharge

2,36m³/s

Mean elev.

24m

Administrative coverage

11 dept-equivalent regions (GADM L2)

3 more

30 intersecting protected areas

21 more protected areas

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

Species present

13 799 distinct species · 1 266 354 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 266 354 obs · 12 cellules
Obs. / cellule
≥ 267 296
242 717–267 295
171 366–242 716
79 195–171 365
< 79 195

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 Råstaån : 29 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 85 interactions GloBI sur 3 types (connectance 12.1%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
85
Connectance
0.121
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°

6,9°C

Annual rain

526mm

Moisture idx (CMI)

-0,07

Runoff

223mm/an

PET

568mm

AET

408mm

Mean slope

2,6°

Water table

142cm

Forest

42%

Crops

8%

Urban

48%

Protected

4%

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