Prefectural Natural Park · jpn
Agano gawa line
- Area
- 30 km²
- IUCN cat.
- V
- Year
- 1959
Overview
- Designation
- Prefectural Natural Park
- IUCN category
- V · Paysage protégé
Paysage façonné par l'humain digne de conservation
- Established
- 1959
- Managing authority
- Niigata Prefecture
Source : WDPA (UNEP-WCMC, World Database on Protected Areas).
Species present
404 distinct species · 876 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 22 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 Agano gawa line : 20 espèces reliées par 16 interactions GloBI sur 4 types (connectance 6.9%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology3 basins · 0 lakes · 17 rivers
Hydrology metrics for this exact territory
Stream length here
26,9km
Basins crossed
3
Max stream order
6
Max drainage
7 512km²
Discharge in basins
9,0m³/s
Mean precip.
1 780mm/an
Mean T°
11,0°C
Moisture idx
0,49
Max snow
33%
Mean runoff
1 110mm/an
Mean elev. (basins)
371m
Watersheds crossing here
Rivers / streams (17, ord ≥ 4)
- 阿賀野川ord 6len here15.98 km18%total91 km
- 荒砥沢川ord 6len here3.40 km55%total6 km
- 常浪川ord 6len here1.74 km5%total33 km
- 中ノ沢川ord 6len here1.19 km8%total14 km
- 実川ord 3len here0.97 km3%total31 km
- 新谷川ord 3len here0.91 km6%total15 km
- 日ノ沢川ord 6len here0.75 km20%total4 km
- 槇沢川ord 1len here0.63 km50%total1 km
- 姥堂川ord 1len here0.39 km6%total7 km
- 裏川ord 3len here0.30 km2%total12 km
- 長谷川ord 3len here0.29 km1%total22 km
- 水沢川ord 1len here0.10 km4%total3 km
5 more river segmentssorted by Strahler order + length
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Location
Fond cartographique : OpenFreeMap · © OpenStreetMap contributors · Géométrie : nos sources (GADM/HydroBASINS/HydroLAKES/HydroRIVERS/WDPA)
- Centroid
- 37.70468, 139.43326
- Open in maps
- OpenStreetMap → · Satellite →
Species observed (Phase 2)
Listing species observed within this protected area requires the GBIF v2 partition × WDPA spatial overlay matview. Computing infrastructure pending.