Ontologia

HydroBASINS lev08 watershed · #2080031630

Bassin de Bodalsån

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 5 administrative regions : Norrtälje, Uppsala, Vallentuna, Värmdö, Österåker

Coastal basin 42% lakePfafstetter: 24471007

Sub-basin area

2 527,9km²

Upstream area

2 527,9km²

Discharge

5,24m³/s

Mean elev.

23m

Administrative coverage

5 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

13 174 distinct species · 988 693 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

988 693 obs · 75 cellules
Obs. / cellule
≥ 55 904
22 905–55 903
14 616–22 904
10 489–14 615
< 10 489

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

Ecological tissue

Sample of 28 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 Bodalsån : 18 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 83 interactions GloBI sur 4 types (connectance 17.8%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
31
Interactions affichées
83
Connectance
0.178
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°

6,0°C

Annual rain

518mm

Moisture idx (CMI)

-0,05

Runoff

270mm/an

PET

545mm

AET

394mm

Mean slope

1,8°

Water table

120cm

Forest

89%

Crops

8%

Urban

1%

Protected

6%

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