Ruisseau· 10 segments
Tännån
Crosses 1 administrative regions : Härjedalen
Total length
47km
Max discharge
5,5m³/s
Max Strahler
2
Segments matched
10
River geography1 admin regions · 0 communes
1 administrative regions crossed (GADM L2)
- HärjedalenJämtland · Sweden58.8 kmin this dpt
7 intersecting protected areas
2000914 Hamrafjället
IUCN IaNature Reserve
Hamrafjället
IUCN IaNatura 2000 SCI
Hamrafjället
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1073679551
IUCN Not ApplicableVoluntary set-aside areas
1073679552
IUCN Not ApplicableVoluntary set-aside areas
Sandåsvallen
IUCN Not AssignedNatura 2000 SCI
Sandåsvallen
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1 page = 1 named river (aggregation of 10 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
1 295 distinct species · 9 536 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 30 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 Tännån : 22 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 52 interactions GloBI sur 6 types (connectance 12.0%, filtre Serrano α=0.2). 8 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
47km
Max discharge
5,5m³/s
Max Strahler
2
Segments matched
10
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.