National Natural Monument · jpn
Yamaguchi genjibotaru hasseichi
- Area
- 142 km²
- IUCN cat.
- III
- Year
- 1935
Overview
- Designation
- National Natural Monument
- IUCN category
- III · Monument naturel
Caractéristique naturelle spécifique protégée
- Established
- 1935
- Managing authority
- Yamaguchi city Board of Education
Source : WDPA (UNEP-WCMC, World Database on Protected Areas).
Species present
1 438 distinct species · 7 058 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 Yamaguchi genjibotaru hasseichi : 16 espèces reliées par 23 interactions GloBI sur 3 types (connectance 10.0%, 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).
Hydrology1 basins · 2 lakes · 12 rivers
Hydrology metrics for this exact territory
Stream length here
45,5km
Lake surface here
0,28km²
Basins crossed
1
Max stream order
3
Max drainage
14 401km²
Discharge in basins
0,1m³/s
Mean precip.
1 742mm/an
Mean T°
13,6°C
Moisture idx
0,42
Max snow
11%
Mean runoff
886mm/an
Mean elev. (basins)
273m
Watersheds crossing here
Lakes (2, top by area)
Rivers / streams (12, ord ≥ 4)
- 椹野川ord 3len here13.78 km56%total25 km
- 仁保川ord 3len here7.44 km35%total21 km
- 吉敷川ord 2len here4.94 km100%total5 km
- 九田川ord 3len here4.73 km100%total5 km
- 油川ord 1len here3.80 km100%total4 km
- 東ノ浴川ord 1len here2.43 km100%total2 km
- 問田川ord 2len here1.83 km50%total4 km
- 杖坂川ord 1len here1.76 km100%total2 km
- 管内川ord 1len here1.62 km100%total2 km
- 前田川ord 1len here1.36 km100%total1 km
- 錦川ord 2len here1.20 km100%total1 km
- 木崎川ord 1len here0.58 km101%total1 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
- 34.18039, 131.45669
- 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.