Ontologia

Rivière· 64 segments

Drwęca

Crosses 9 administrative regions : Brodnica, Golub-Dobrzyń, Iława, Nowe Miasto, Olsztyn +4

rivière

Total length

242km

Max discharge

27,4m³/s

Max Strahler

4

Segments matched

64

River geography9 admin regions · 0 communes

Parent watershed

hybas-2080344610693 km²

9 administrative regions crossed (GADM L2)

  • Brodnica
    Kujawsko-Pomorskie · Poland
    70.1 km
    in this dpt
  • Ostróda
    Warmińsko-Mazurskie · Poland
    69.2 km
    in this dpt
  • Golub-Dobrzyń
    Kujawsko-Pomorskie · Poland
    67.2 km
    in this dpt
  • Iława
    Warmińsko-Mazurskie · Poland
    53.1 km
    in this dpt
  • Nowe Miasto
    Warmińsko-Mazurskie · Poland
    25.4 km
    in this dpt
  • Toruń
    Kujawsko-Pomorskie · Poland
    17.6 km
    in this dpt
  • Rypin
    Kujawsko-Pomorskie · Poland
    7.9 km
    in this dpt
  • Olsztyn
    Warmińsko-Mazurskie · Poland
    7.2 km
    in this dpt
  • Toruń (City)
    Kujawsko-Pomorskie · Poland
    1.1 km
    in this dpt

19 intersecting protected areas

10 more protected areas

1 page = 1 named river (aggregation of 64 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

47 distinct species · 61 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 20 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 Drwęca : 18 espèces reliées par 20 interactions GloBI sur 6 types (connectance 10.5%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
20
Interactions affichées
20
Connectance
0.105
Patrimoniales
0
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

242km

Max discharge

27,4m³/s

Max Strahler

4

Segments matched

64

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