Ruisseau· 4 segments

小野川

Crosses 8 administrative regions : Ami, Inashiki, Katori, Miho, Ryūgasaki +3

ruisseau

Total length

184km

Max discharge

3,4m³/s

Max Strahler

Segments matched

River geography8 admin regions · 0 communes

Parent watershed

hybas-40805876801939 km²

8 administrative regions crossed (GADM L2)

Ushiku
Ibaraki · Japan
15.7 km
in this dpt
Inashiki
Ibaraki · Japan
12.3 km
in this dpt
Tsukuba
Ibaraki · Japan
7.1 km
in this dpt
Water body
Ibaraki · Japan
6.1 km
in this dpt
Katori
Chiba · Japan
4.3 km
in this dpt
Ryūgasaki
Ibaraki · Japan
0.3 km
in this dpt
Miho
Ibaraki · Japan
0.0 km
in this dpt
Ami
Ibaraki · Japan
0.0 km
in this dpt

13 intersecting protected areas

Suigo-Tsukuba
IUCN V
Quasi National Park
Edosaki
IUCN IV
Prefectural Wildlife Protection Area
Ryugasaki
IUCN IV
Prefectural Wildlife Protection Area
Ottonuma
IUCN IV
Prefectural Wildlife Protection Area
Otone
IUCN V
Prefectural Natural Park
Kashiwada
IUCN IV
Prefectural Wildlife Protection Area
Shimone
IUCN IV
Prefectural Wildlife Protection Area
Ushiku shizenkansatsuno mori
IUCN IV
Prefectural Wildlife Protection Area
Osaka
IUCN IV
Prefectural Wildlife Protection Area

4 more protected areassorted by area

Kamiikedai
IUCN IV
Prefectural Wildlife Protection Area
Ryugasakishi shinrin koen
IUCN IV
Prefectural Wildlife Protection Area
Takata gongen
IUCN V
Prefectural Nature Conservation Area
Tsukuba Biodiversity Green Area in National Institute for Environmental Studies
IUCN Not Applicable
OECM

1 page = 1 named river (aggregation of 4 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

424 distinct species · 725 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 31 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 小野川 : 26 espèces reliées par 33 interactions GloBI sur 3 types (connectance 6.2%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.063

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)