Ontologia

Ruisseau· 3 segments

Sarneraa

Crosses 1 administrative regions : Obwalden

ruisseau

Total length

8km

Max discharge

11,6m³/s

Max Strahler

3

Segments matched

3

River geography1 admin regions · 0 communes

Parent watershed

hybas-2080507730442 km²

1 administrative regions crossed (GADM L2)

  • Obwalden
    Obwalden · Switzerland
    10.5 km
    in this dpt

4 intersecting protected areas

  • Gerzensee, Blindseeli

    IUCN IV

    Federal Inventory of Amphibian Spawning Areas of National Importance

  • Zöpfen

    IUCN Not Assigned

    Private Nature Reserves

  • Ruedlen

    IUCN IV

    Federal Inventory of Dry Grasslands and Pastures of National Importance

  • Vorder Schwarzenberg

    IUCN IV

    Federal Inventory of Dry Grasslands and Pastures of National Importance

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

Species present

1 771 distinct species · 7 445 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 46 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 Sarneraa : 35 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 96 interactions GloBI sur 7 types (connectance 8.5%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
48
Interactions affichées
96
Connectance
0.085
Patrimoniales
2
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

8km

Max discharge

11,6m³/s

Max Strahler

3

Segments matched

3

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