Ontologia

Ruisseau· 3 segments

Forsaån

Crosses 2 administrative regions : Flen, Katrineholm

ruisseau

Total length

29km

Max discharge

5,6m³/s

Max Strahler

3

Segments matched

3

River geography2 admin regions · 0 communes

Parent watershed

hybas-20800319003892 km²

2 administrative regions crossed (GADM L2)

  • Katrineholm
    Södermanland · Sweden
    14.6 km
    in this dpt
  • Flen
    Södermanland · Sweden
    5.5 km
    in this dpt

17 intersecting protected areas

  • Båven

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

  • Båven

    IUCN Not Reported

    Special Protection Area (Birds Directive)

  • Båven

    IUCN Not Assigned

    Natura 2000 SCI

  • Båven

    IUCN Not Assigned

    Natura 2000 SPA

  • Svinnäset

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

  • Svinnäset

    IUCN Not Assigned

    Natura 2000 SCI

  • SK 42-2007

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

  • 896858988

    IUCN Not Applicable

    Voluntary set-aside areas

  • SK 1155-2002

    IUCN Ia

    Habitat Protection Area

8 more protected areas

1 page = 1 named river (aggregation of 3 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

2 992 distinct species · 40 343 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 32 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 Forsaån : 21 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 99 interactions GloBI sur 6 types (connectance 20.0%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
32
Interactions affichées
99
Connectance
0.200
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

29km

Max discharge

5,6m³/s

Max Strahler

3

Segments matched

3

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