Rivière· 7 segments

Tämnarån

Crosses 3 administrative regions : Heby, Tierp, Uppsala

rivière

Total length

53km

Max discharge

9,5m³/s

Max Strahler

Segments matched

River geography3 admin regions · 0 communes

Parent watershed

hybas-20800315101213 km²

3 administrative regions crossed (GADM L2)

Tierp
Uppsala · Sweden
35.2 km
in this dpt
Uppsala
Uppsala · Sweden
1.1 km
in this dpt
Heby
Västmanland · Sweden
0.0 km
in this dpt

14 intersecting protected areas

Tämnaren väst
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
Tämnaren väst
IUCN Not Reported
Special Protection Area (Birds Directive)
Tämnaren väst
IUCN IV
Natura 2000 SPA
Tämnaren väst
IUCN IV
Natura 2000 SCI
Tämnaren öst
IUCN Not Assigned
Natura 2000 SPA
Tämnaren öst
IUCN Not Assigned
Natura 2000 SCI
Tämnaren öst
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
Tämnaren öst
IUCN Not Reported
Special Protection Area (Birds Directive)
2001904 Aspnäs
IUCN IV
Nature Reserve

5 more protected areassorted by area

SK 525-2018
IUCN IV
Nature conservation agreement
SK 342-2018
IUCN Ia
Habitat Protection Area
SK 409-2006
IUCN IV
Nature conservation agreement, Swedish Forest Agency
SK 802-2005
IUCN IV
Nature conservation agreement, Swedish Forest Agency
SK 353-2017
IUCN Ia
Habitat Protection Area

1 page = 1 named river (aggregation of 7 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

877 distinct species · 8 678 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 28 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 Tämnarån : 19 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 58 interactions GloBI sur 4 types (connectance 11.0%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.110

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)