HydroBASINS lev08 watershed · #2080372380
Bassin de Struga Witkowska
A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.
Crosses 3 administrative regions : Gniezno, Słupca, Września
Sub-basin area
687,5km²
Upstream area
687,5km²
Discharge
2,23m³/s
Mean elev.
103m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- Słupca393.2 km²57.0% of basin
- Gniezno223.0 km²32.3% of basin
- Września74.0 km²10.7% of basin
7 intersecting protected areas
Powidzko-Bieniszewski
IUCN Not AssignedProtected Landscape Area
222.10 km² overlap
Landscape Park
119.57 km² overlap
Pojezierze Gnieźnieńskie
IUCN Not ReportedSite of Community Importance (Habitats Directive)
63.58 km² overlap
Ostoja Nadwarciańska
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.17 km² overlap
Dolina Środkowej Warty
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.17 km² overlap
Pyzdrski
IUCN Not AssignedProtected Landscape Area
0.17 km² overlap
Landscape Park
0.17 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 230 distinct species · 16 811 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 Bassin de Struga Witkowska : 24 espèces reliées par 85 interactions GloBI sur 4 types (connectance 15.2%, 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).
Hydroclimate (BasinATLAS lev08)
Mean T°
8,1°C
Annual rain
523mm
Moisture idx (CMI)
-0,30
Runoff
103mm/an
PET
749mm
AET
447mm
Mean slope
0,5°
Water table
71cm
Forest
11%
Crops
64%
Urban
3%
Protected
32%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)