Ontologia

Ruisseau· 8 segments

Surtan

Crosses 3 administrative regions : Bollebygd, Borås, Mark

ruisseau

Total length

48km

Max discharge

3,8m³/s

Max Strahler

3

Segments matched

8

River geography3 admin regions · 0 communes

Parent watershed

hybas-20800331902177 km²

3 administrative regions crossed (GADM L2)

  • Mark
    Västra Götaland · Sweden
    42.1 km
    in this dpt
  • Bollebygd
    Västra Götaland · Sweden
    5.7 km
    in this dpt
  • Borås
    Västra Götaland · Sweden
    5.2 km
    in this dpt

8 intersecting protected areas

  • SK 253-1999

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

  • 2014941 Stoms ås

    IUCN Ia

    Nature Reserve

  • Stoms ås

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

  • Stoms ås

    IUCN Ia

    Natura 2000 SCI

  • SK 675-2005

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

  • SK 130-2014

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

  • SK 280-2011

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

  • SK 670-2012

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

1 page = 1 named river (aggregation of 8 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

960 distinct species · 9 386 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 27 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 Surtan : 19 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 77 interactions GloBI sur 4 types (connectance 15.5%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
32
Interactions affichées
77
Connectance
0.155
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydrology (HydroRIVERS v10)

Total length

48km

Max discharge

3,8m³/s

Max Strahler

3

Segments matched

8

HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.