Ontologia

Ruisseau· 9 segments

Ösan

Crosses 3 administrative regions : Mariestad, Skövde, Tidaholm

ruisseau

Total length

61km

Max discharge

3,5m³/s

Max Strahler

3

Segments matched

9

River geography3 admin regions · 0 communes

Parent watershed

hybas-20802514402803 km²

3 administrative regions crossed (GADM L2)

  • Tidaholm
    Västra Götaland · Sweden
    23.7 km
    in this dpt
  • Skövde
    Västra Götaland · Sweden
    17.7 km
    in this dpt
  • Mariestad
    Västra Götaland · Sweden
    4.8 km
    in this dpt

18 intersecting protected areas

  • Östen

    IUCN IV

    Wetland of International Importance (Ramsar Site)

  • Östen

    IUCN Not Reported

    Special Protection Area (Birds Directive)

  • Östen

    IUCN Not Assigned

    Natura 2000 SPA

  • 2000382 Östen

    IUCN Not Assigned

    Nature Conservation Area

  • 2000577 Logården

    IUCN IV

    Nature Reserve

  • SK 617-2004

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

  • SK 578-2006

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

  • 2000810 Ekedalen, Varv

    IUCN IV

    Nature Reserve

  • Gorsan

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

9 more protected areas

1 page = 1 named river (aggregation of 9 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

2 913 distinct species · 41 023 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 Ösan : 17 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 91 interactions GloBI sur 5 types (connectance 20.9%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
30
Interactions affichées
91
Connectance
0.209
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

61km

Max discharge

3,5m³/s

Max Strahler

3

Segments matched

9

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