Coastline Marine Resource Development Area, designated sea area · jpn
Oshima tobu
- Area
- 315 km²
- IUCN cat.
- VI
- Year
- 1973
Overview
- Designation
- Coastline Marine Resource Development Area, designated sea area
- IUCN category
- VI · Aire protégée avec utilisation durable
Conservation + utilisation durable des ressources
- Established
- 1973
- Managing authority
- Hokkaido Prefecture
Source : WDPA (UNEP-WCMC, World Database on Protected Areas).
Species present
765 distinct species · 3 990 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 Oshima tobu : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 41 interactions GloBI sur 5 types (connectance 7.8%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology1 basins · 0 lakes · 10 rivers
Hydrology metrics for this exact territory
Stream length here
0,7km
Basins crossed
1
Max stream order
2
Max drainage
6 362km²
Discharge in basins
0,0m³/s
Mean precip.
1 241mm/an
Mean T°
7,2°C
Moisture idx
0,43
Max snow
28%
Mean runoff
878mm/an
Mean elev. (basins)
227m
Watersheds crossing here
Rivers / streams (10, ord ≥ 4)
- 鮫川ord 1len here0.16 km4%total4 km
- 八木川ord 1len here0.16 km3%total6 km
- 川ツ汲川ord 1len here0.13 km5%total2 km
- 常路川ord 1len here0.08 km1%total9 km
- 湯の川ord 1len here0.06 km1%total4 km
- 鹿部川ord 2len here0.03 km1%total4 km
- 原木川ord 1len here0.02 km1%total2 km
- 精進川ord 1len here0.02 km0%total4 km
- 松倉川ord 2len here≈ tangenttotal19 km
- 尾札部川ord 1len here≈ tangenttotal4 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
- 41.91813, 141.01317
- 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.