Ruisseau· 15 segments
Czarna Hańcza
Crosses 4 administrative regions : Augustów, Sejny, Suwałki, Suwałki (City)
Total length
108km
Max discharge
5,1m³/s
Max Strahler
3
Segments matched
15
River geography4 admin regions · 0 communes
4 administrative regions crossed (GADM L2)
- SuwałkiPodlaskie · Poland43.5 kmin this dpt
- SejnyPodlaskie · Poland36.8 kmin this dpt
- Suwałki (City)Podlaskie · Poland15.1 kmin this dpt
- AugustówPodlaskie · Poland5.1 kmin this dpt
14 intersecting protected areas
Puszcza Augustowska
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Ostoja Augustowska
IUCN Not ReportedSite of Community Importance (Habitats Directive)
Puszcza i Jeziora Augustowskie
IUCN Not AssignedProtected Landscape Area
Pojezierze Północnej Suwalszczyzny
IUCN Not AssignedProtected Landscape Area
Pojezierze Sejneńskie
IUCN Not AssignedProtected Landscape Area
Ostoja Wigierska
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Wigierski Park Narodowy
IUCN VNational Park
Wigry National Park
IUCN IIWetland of International Importance (Ramsar Site)
Pojezierze Sejneńskie
IUCN Not ReportedSite of Community Importance (Habitats Directive)
5 more protected areassorted by area
Ostoja Suwalska
IUCN Not ReportedSite of Community Importance (Habitats Directive)
Landscape Park
Jeleniewo
IUCN Not ReportedSite of Community Importance (Habitats Directive)
Jezioro Hańcza
IUCN IVNature Reserve
Nature Reserve
1 page = 1 named river (aggregation of 15 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
1 452 distinct species · 21 068 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 Czarna Hańcza : 28 espèces reliées par 33 interactions GloBI sur 3 types (connectance 7.1%, filtre Serrano α=0.2). 3 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
108km
Max discharge
5,1m³/s
Max Strahler
3
Segments matched
15
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.