Prefectural Natural Park · jpn
On Take
- Area
- 188 km²
- IUCN cat.
- V
- Year
- 1962
Overview
- Designation
- Prefectural Natural Park
- IUCN category
- V · Paysage protégé
Paysage façonné par l'humain digne de conservation
- Established
- 1962
- Managing authority
- Nagano Prefecture
Source : WDPA (UNEP-WCMC, World Database on Protected Areas).
Species present
912 distinct species · 10 932 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 19 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 On Take : 14 espèces reliées par 20 interactions GloBI sur 4 types (connectance 10.5%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology2 basins · 1 lakes · 17 rivers
Hydrology metrics for this exact territory
Stream length here
56,7km
Lake surface here
2,31km²
Basins crossed
2
Max stream order
3
Max drainage
2 156km²
Discharge in basins
6,8m³/s
Mean precip.
1 936mm/an
Mean T°
6,7°C
Moisture idx
0,57
Max snow
27%
Mean runoff
1 152mm/an
Mean elev. (basins)
1 391m
Watersheds crossing here
Lakes (1, top by area)
Rivers / streams (17, ord ≥ 4)
- 大川小谷ord 1len here10.12 km99%total10 km
- 濁沢川ord 2len here5.70 km71%total8 km
- 鹿ノ瀬川ord 1len here5.55 km95%total6 km
- 南俣川ord 1len here4.66 km100%total5 km
- 王滝川ord 4len here4.22 km11%total39 km
- 伝上川ord 1len here3.80 km100%total4 km
- 上浦沢ord 2len here3.64 km100%total4 km
- 湯川ord 2len here3.45 km72%total5 km
- 白川ord 4len here2.84 km6%total49 km
- 白布谷ord 1len here2.67 km100%total3 km
- 冷川ord 2len here2.55 km45%total6 km
- 樽沢ord 3len here1.92 km19%total10 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
- 35.88385, 137.47692
- 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.