Ruisseau· 23 segments
Sona
Crosses 4 administrative regions : Ciechanów, Przasnysz, Pułtusk, Płońsk
Total length
89km
Max discharge
3,4m³/s
Max Strahler
3
Segments matched
23
River geography4 admin regions · 0 communes
4 administrative regions crossed (GADM L2)
- CiechanówMazowieckie · Poland69.4 kmin this dpt
- PłońskMazowieckie · Poland21.3 kmin this dpt
- PrzasnyszMazowieckie · Poland0.0 kmin this dpt
- PułtuskMazowieckie · Poland0.0 kmin this dpt
2 intersecting protected areas
Nadwkrzański
IUCN Not AssignedProtected Landscape Area
Krośnicko-Kosmowski
IUCN Not AssignedProtected Landscape Area
1 page = 1 named river (aggregation of 23 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
43 distinct species · 166 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).
Indicateurs du tissu écologique
Tissu écologique de Sona : 26 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 30 interactions GloBI sur 4 types (connectance 7.9%, filtre Serrano α=0.2). 2 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
89km
Max discharge
3,4m³/s
Max Strahler
3
Segments matched
23
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.