Ruisseau
Hållborgsån
Crosses 2 administrative regions : Bräcke, Östersund
Total length
2km
Max discharge
2,2m³/s
Max Strahler
2
Segments matched
1
River geography2 admin regions · 0 communes
2 administrative regions crossed (GADM L2)
8 intersecting protected areas
Gimån; Uppströms Holmsjön
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Gimån; Uppströms Holmsjön
IUCN Not AssignedNatura 2000 SCI
2043366 Tunsved
IUCN IaNature Reserve
Tunsved
IUCN IaNatura 2000 SCI
Tunsved
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
SK 17-1999
IUCN IVNature conservation agreement, Swedish Forest Agency
SK 606-2007
IUCN IVNature conservation agreement, Swedish Forest Agency
SK 806-2004
IUCN IaHabitat Protection Area
1 page = 1 named river (aggregation of 1 HydroRIVERS v10 segment). Spatial join cached after first hit.
Species present
497 distinct species · 1 475 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).
Indicateurs du tissu écologique
Tissu écologique de Hållborgsån : 29 espèces reliées par 62 interactions GloBI sur 5 types (connectance 12.5%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology (HydroRIVERS v10)
Total length
2km
Max discharge
2,2m³/s
Max Strahler
2
Segments matched
1
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.