Ruisseau

Varuna

Crosses 1 administrative regions : Bernina

ruisseau

Total length

187km

Max discharge

0,3m³/s

Max Strahler

Segments matched

River geography1 admin regions · 0 communes

Parent watershed

hybas-20805272402615 km²

1 administrative regions crossed (GADM L2)

Bernina
Graubünden · Switzerland
2.9 km
in this dpt

9 intersecting protected areas

Campasc
IUCN IV
Federal Hunting Reserves
Sursassa
IUCN IV
Federal Inventory of Dry Grasslands and Pastures of National Importance
Cansumé
IUCN IV
Federal Inventory of Dry Grasslands and Pastures of National Importance
Stabli da Varuna
IUCN IV
Federal Inventory of Dry Grasslands and Pastures of National Importance
Massela
IUCN IV
Federal Inventory of Dry Grasslands and Pastures of National Importance
Vederscion
IUCN IV
Federal Inventory of Dry Grasslands and Pastures of National Importance
Motta da Cadera
IUCN IV
Federal Inventory of Dry Grasslands and Pastures of National Importance
Varuna Daint
IUCN IV
Federal Inventory of Dry Grasslands and Pastures of National Importance
Cadera Dafora
IUCN IV
Federal Inventory of Dry Grasslands and Pastures of National Importance

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

Species present

1 781 distinct species · 12 097 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

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Varuna : 17 espèces reliées par 94 interactions GloBI sur 5 types (connectance 23.2%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.232

Patrimoniales

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)