Ruisseau· 4 segments
藤井川
Crosses 3 administrative regions : Kasama, Mito, Shirosato
Total length
69km
Max discharge
1,9m³/s
Max Strahler
2
Segments matched
4
River geography3 admin regions · 0 communes
3 administrative regions crossed (GADM L2)
5 intersecting protected areas
Gozen yama
IUCN VPrefectural Natural Park
Kasama
IUCN VPrefectural Natural Park
Mito
IUCN IVPrefectural Wildlife Protection Area
Seion ji
IUCN VPrefectural Nature Conservation Area
Komatsuzi
IUCN VPrefectural Nature Conservation Area
1 page = 1 named river (aggregation of 4 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
106 distinct species · 297 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 21 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 藤井川 : 18 espèces reliées par 24 interactions GloBI sur 2 types (connectance 9.5%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology (HydroRIVERS v10)
Total length
69km
Max discharge
1,9m³/s
Max Strahler
2
Segments matched
4
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.