Ruisseau· 2 segments
Snärvingens utlopp
Crosses 2 administrative regions : Norrtälje, Vallentuna
Total length
9km
Max discharge
0,3m³/s
Max Strahler
1
Segments matched
2
River geography2 admin regions · 0 communes
2 administrative regions crossed (GADM L2)
- NorrtäljeStockholm · Sweden10.8 kmin this dpt
- VallentunaStockholm · Sweden0.3 kmin this dpt
8 intersecting protected areas
2002819 Mörtsjöskogen
IUCN IaNature Reserve
Mörtsjöskogen
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Mörtsjöskogen
IUCN IaNatura 2000 SCI
SK 352-2008
IUCN IaHabitat Protection Area
SK 458-2008
IUCN IaHabitat Protection Area
SK 706-2002
IUCN IaHabitat Protection Area
SK 542-2014
IUCN IaHabitat Protection Area
SK 707-2002
IUCN IaHabitat Protection Area
1 page = 1 named river (aggregation of 2 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
1 052 distinct species · 8 559 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 Snärvingens utlopp : 24 espèces reliées par 33 interactions GloBI sur 5 types (connectance 6.7%, 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
9km
Max discharge
0,3m³/s
Max Strahler
1
Segments matched
2
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.