Prefectural Natural Park · JPN
Hiyama
- Area
- 171 km²
- IUCN cat.
- V
- Year
- 2003
Overview
- Designation
- Prefectural Natural Park
- IUCN category
- V · Paysage protégé
Paysage façonné par l'humain digne de conservation
- Established
- 2003
- Managing authority
- Hokkaido Prefecture
Source : WDPA (UNEP-WCMC, World Database on Protected Areas).
Species present
158 distinct species · 1 003 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 Hiyama : 31 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 31 interactions GloBI sur 6 types (connectance 4.9%, 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).
Hydrology4 basins · 0 lakes · 12 rivers
Hydrology metrics for this exact territory
Stream length here
27,1km
Basins crossed
4
Max stream order
4
Max drainage
6 362km²
Discharge in basins
1,8m³/s
Mean precip.
1 284mm/an
Mean T°
7,5°C
Moisture idx
0,47
Max snow
32%
Mean runoff
850mm/an
Mean elev. (basins)
281m
Watersheds crossing here
Rivers / streams (12, ord ≥ 4)
- 見市川ord 2len here8.14 km44%total19 km
- 青苗川ord 1len here5.30 km99%total5 km
- 釣懸川ord 1len here3.70 km96%total4 km
- 烏頭川ord 1len here2.70 km100%total3 km
- 幌内川ord 1len here2.61 km93%total3 km
- ホヤ石川水系渓流川ord 1len here1.79 km100%total2 km
- 大岩生川ord 1len here1.38 km85%total2 km
- 塩釜川ord 1len here0.71 km83%total1 km
- 砥歌川ord 1len here0.61 km34%total2 km
- 厚沢部川ord 4len here0.09 km0%total35 km
- 鮪歌三ツ谷川ord 1len here0.06 km3%total2 km
- 相沼二股川ord 2len here≈ tangenttotal6 km
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
- 42.15235, 139.46701
- 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.