Ontologia

HydroBASINS lev08 watershed · #2080260440

Bassin de Bredängsån

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 : Alingsås, Essunga, Grästorp, Lilla Edet, Trollhättan +1

13% lakePfafstetter: 24480102

Sub-basin area

282,2km²

Upstream area

282,3km²

Discharge

4,03m³/s

Mean elev.

75m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Grönån949 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

6 dept-equivalent regions (GADM L2)

30 intersecting protected areas

21 more protected areas

  • 2045052 Lilla Boda

    IUCN Ia

    Nature Reserve

    0.86 km² overlap

  • 2042869 Ålstadnäset

    IUCN Ia

    Nature Reserve

    0.45 km² overlap

  • SK 149-1995

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

    0.14 km² overlap

  • SK 385-2001

    IUCN Ia

    Habitat Protection Area

    0.07 km² overlap

  • Häggsjöryr

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    0.07 km² overlap

  • 2000409 Häggsjöryr

    IUCN IV

    Nature Reserve

    0.07 km² overlap

  • Häggsjöryr

    IUCN IV

    Natura 2000 SCI

    0.07 km² overlap

  • SK 526-2001

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

    0.07 km² overlap

  • n/a.

    IUCN IV

    Nature conservation agreement, County Administrative Board

    0.04 km² overlap

  • SK 581-2005

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

    0.04 km² overlap

  • SK 11-2010

    IUCN Ia

    Habitat Protection Area

    0.04 km² overlap

  • SK 331-2007

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

    0.03 km² overlap

  • SK 470-2016

    IUCN Ia

    Habitat Protection Area

    0.02 km² overlap

  • SK 532-2003

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

    0.02 km² overlap

  • Halle- Hunneberg

    IUCN IV

    Nature conservation agreement

    0.02 km² overlap

  • SK 531-2003

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

    0.02 km² overlap

  • Halle- Hunneberg

    IUCN IV

    Nature conservation agreement

    0.02 km² overlap

  • SK 1102-2005

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

    0.02 km² overlap

  • SK 291-1999

    IUCN Ia

    Habitat Protection Area

    0.02 km² overlap

  • SK 1099-2005

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

    0.01 km² overlap

  • SK 432-2000

    IUCN Ia

    Habitat Protection Area

    0.01 km² overlap

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

Species present

3 968 distinct species · 101 209 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

101 209 obs · 9 cellules
Obs. / cellule
≥ 26 552
26 552–26 551
12 921–26 551
8 969–12 920
< 8 969

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

Ecological tissue

Sample of 45 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 Bredängsån : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 117 interactions GloBI sur 6 types (connectance 11.8%, filtre Serrano α=0.2). 17 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
45
Interactions affichées
117
Connectance
0.118
Patrimoniales
1
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°

6,7°C

Annual rain

789mm

Moisture idx (CMI)

0,28

Runoff

426mm/an

PET

569mm

AET

460mm

Mean slope

1,9°

Water table

106cm

Forest

75%

Crops

28%

Urban

0%

Protected

3%

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