Ontologia

Ruisseau· 15 segments

Mała Wełna

Crosses 3 administrative regions : Gniezno, Oborniki, Wągrowiec

ruisseau

Total length

87km

Max discharge

2,3m³/s

Max Strahler

3

Segments matched

15

River geography3 admin regions · 0 communes

Parent watershed

hybas-2080357890683 km²

3 administrative regions crossed (GADM L2)

  • Gniezno
    Wielkopolskie · Poland
    53.0 km
    in this dpt
  • Wągrowiec
    Wielkopolskie · Poland
    25.9 km
    in this dpt
  • Oborniki
    Wielkopolskie · Poland
    13.9 km
    in this dpt

7 intersecting protected areas

1 page = 1 named river (aggregation of 15 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

236 distinct species · 1 469 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 37 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).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Mała Wełna : 26 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 70 interactions GloBI sur 4 types (connectance 10.0%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
70
Connectance
0.100
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydrology (HydroRIVERS v10)

Total length

87km

Max discharge

2,3m³/s

Max Strahler

3

Segments matched

15

HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.