Ruisseau· 5 segments

本沢

Crosses 6 administrative regions : Azumino, Matsumoto, Nagawa, Saku, Tateshina +1

ruisseau

Total length

83km

Max discharge

0,6m³/s

Max Strahler

Segments matched

River geography6 admin regions · 0 communes

Parent watershed

hybas-4080571130392 km²

6 administrative regions crossed (GADM L2)

Azumino
Nagano · Japan
4.0 km
in this dpt
Saku
Nagano · Japan
3.7 km
in this dpt
Yamanouchi
Nagano · Japan
2.9 km
in this dpt
Nagawa
Nagano · Japan
2.2 km
in this dpt
Matsumoto
Nagano · Japan
0.9 km
in this dpt
Tateshina
Nagano · Japan
0.0 km
in this dpt

12 intersecting protected areas

Chubusangaku
IUCN II
National Park
Joshinetsukogen
IUCN II
National Park
Yatsugatake-Chushinkogen
IUCN V
Quasi National Park
Shiga Highland
IUCN Not Applicable
UNESCO-MAB Biosphere Reserve
Kitaarupusu（Chogadake・Otenshodake・Yarigatake・Hodakadake）
IUCN IV
Biocenosis Protected Forest
Shiga kogen
IUCN IV
Prefectural Wildlife Protection Area
Hongo(fujimi)
IUCN IV
Prefectural Wildlife Protection Area
Annandaira
IUCN IV
Prefectural Wildlife Protection Area
Tsukisawa
IUCN IV
Prefectural Wildlife Protection Area

3 more protected areassorted by area

Daimon takayama
IUCN IV
Prefectural Wildlife Protection Area
Kasagatake
IUCN IV
Rare Population Protected Forest
Mochizuki shonen shizenno ie
IUCN IV
Prefectural Wildlife Protection Area

1 page = 1 named river (aggregation of 5 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

440 distinct species · 646 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 25 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 本沢 : 23 espèces reliées par 24 interactions GloBI sur 6 types (connectance 7.4%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.074

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)