Rivière· 27 segments

Obra

Crosses 8 administrative regions : Gostyń, Jarocin, Krotoszyn, Międzyrzecz, Nowy Tomyśl +3

rivière

Total length

141km

Max discharge

21,5m³/s

Max Strahler

Segments matched

River geography8 admin regions · 0 communes

Parent watershed

hybas-20803659001011 km²

8 administrative regions crossed (GADM L2)

Międzyrzecz
Lubuskie · Poland
97.5 km
in this dpt
Nowy Tomyśl
Wielkopolskie · Poland
43.7 km
in this dpt
Jarocin
Wielkopolskie · Poland
20.8 km
in this dpt
Świebodzin
Lubuskie · Poland
1.2 km
in this dpt
Wolsztyn
Wielkopolskie · Poland
0.5 km
in this dpt
Krotoszyn
Wielkopolskie · Poland
0.2 km
in this dpt
Śrem
Wielkopolskie · Poland
0.1 km
in this dpt
Gostyń
Wielkopolskie · Poland
0.0 km
in this dpt

14 intersecting protected areas

Puszcza Notecka
IUCN Not Reported
Special Protection Area (Birds Directive)
Dolina Warty i Dolnej Noteci
IUCN Not Assigned
Protected Landscape Area
Pojezierze Sławskie, Pradolina Obry i Rynna Zbąszyńska
IUCN Not Assigned
Protected Landscape Area
Rynna Paklicy i Ołoboku
IUCN Not Assigned
Protected Landscape Area
Rynna Jezior Obrzańskich
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
Jeziora Pszczewskie i Dolina Obry
IUCN Not Reported
Special Protection Area (Birds Directive)
Pszczewski Park Krajobrazowy
IUCN V
Landscape Park
Dolina Obry
IUCN Not Assigned
Protected Landscape Area
Nietoperek
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)

5 more protected areassorted by area

Dolina Leniwej Obry
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
I Międzyrzecz-Trzciel
IUCN Not Assigned
Protected Landscape Area
Miedzichowski Park Krajobrazowy
IUCN Not Assigned
Landscape Park
Zbąszyńska Dolina Obry
IUCN Not Assigned
Protected Landscape Area
Jezioro Wielkie im. Włodzimierza Rudawskiego
IUCN IV
Nature Reserve

1 page = 1 named river (aggregation of 27 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

99 distinct species · 111 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 38 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

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Obra : 33 espèces reliées par 51 interactions GloBI sur 4 types (connectance 7.3%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.072

Patrimoniales

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)