Ruisseau· 6 segments
Trojanka
Crosses 3 administrative regions : Oborniki, Poznań, Wągrowiec
Total length
22km
Max discharge
0,5m³/s
Max Strahler
3
Segments matched
6
River geography3 admin regions · 0 communes
3 administrative regions crossed (GADM L2)
- PoznańWielkopolskie · Poland21.8 kmin this dpt
- ObornikiWielkopolskie · Poland0.0 kmin this dpt
- WągrowiecWielkopolskie · Poland0.0 kmin this dpt
5 intersecting protected areas
Landscape Park
Biedrusko
IUCN Not ReportedSite of Community Importance (Habitats Directive)
Biedrusko
IUCN Not AssignedProtected Landscape Area
Uroczyska Puszczy Zielonki
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Żywiec Dziewięciolistny
IUCN Not AssignedNature Reserve
1 page = 1 named river (aggregation of 6 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
559 distinct species · 1 384 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 46 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 Trojanka : 36 espèces reliées par 106 interactions GloBI sur 7 types (connectance 10.2%, filtre Serrano α=0.2). 10 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
22km
Max discharge
0,5m³/s
Max Strahler
3
Segments matched
6
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.