Ruisseau· 3 segments
Ällan
Crosses 1 administrative regions : Härjedalen
Total length
12km
Max discharge
1,6m³/s
Max Strahler
2
Segments matched
3
River geography1 admin regions · 0 communes
1 administrative regions crossed (GADM L2)
- HärjedalenJämtland · Sweden19.0 kmin this dpt
2 intersecting protected areas
SK 201-1998
IUCN IaHabitat Protection Area
SK 117-1997
IUCN IaHabitat Protection Area
1 page = 1 named river (aggregation of 3 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
183 distinct species · 553 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 Ällan : 26 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 33 interactions GloBI sur 5 types (connectance 5.9%, 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
12km
Max discharge
1,6m³/s
Max Strahler
2
Segments matched
3
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.