Rivière· 6 segments
大門川
Crosses 5 administrative regions : Chino, Nagawa, Tateshina, Tsunan, Tōkamachi
Total length
80km
Max discharge
301,8m³/s
Max Strahler
6
Segments matched
6
River geography5 admin regions · 0 communes
5 administrative regions crossed (GADM L2)
8 intersecting protected areas
Yatsugatake-Chushinkogen
IUCN VQuasi National Park
Kurumayama shirakabako
IUCN IVPrefectural Wildlife Protection Area
Daimon
IUCN IVPrefectural Wildlife Protection Area
Daimon takayama
IUCN IVPrefectural Wildlife Protection Area
Ryugakubo
IUCN IVPrefectural Wildlife Protection Area
Daimonyama
IUCN IVRare Population Protected Forest
Hotokeiwa
IUCN VLocal Environment Conservation Area(Nagano)
Ryugakubo
IUCN VPrefectural Nature Conservation Area
1 page = 1 named river (aggregation of 6 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
603 distinct species · 1 146 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).
Indicateurs du tissu écologique
Tissu écologique de 大門川 : 17 espèces reliées par 19 interactions GloBI sur 6 types (connectance 10.0%, filtre Serrano α=0.2). 3 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
80km
Max discharge
301,8m³/s
Max Strahler
6
Segments matched
6
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.