Ontologia

HydroLAKES lake · #1371725

Hiraoka

ReservoirJapanAsia 312 m

Surface area

0,6km²

Avg depth

70,1m

Volume

42,4km³

Shoreline

8,1km

Administrative coverage

Parent watershed

hybas-40806055901756 km² · upstream 3269 km²

1 dept-equivalent regions (GADM L2)

  • Tenryū
    Nagano · Japan
    0.60 km²
    100.0% of lake

2 intersecting protected areas

  • Tenryu-Okumikawa

    IUCN V

    Quasi National Park

    0.60 km² overlap

  • Yakyo

    IUCN IV

    Prefectural Wildlife Protection Area

    0.13 km² overlap

Computed live · HydroLAKES × GADM × WDPA · cached after first hit.

Species present

716 distinct species · 1 592 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 592 obs · 1 cellules
Obs. / cellule
≥ 1 592
1 592–1 591
1 592–1 591
1 592–1 591
< 1 592

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Ecological tissue

Sample of 24 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).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Hiraoka : 23 espèces reliées par 18 interactions GloBI sur 4 types (connectance 6.5%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
24
Interactions affichées
18
Connectance
0.065
Patrimoniales
0
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Lake statistics (HydroLAKES)

Surface

0,60km²

Avg depth

70,1m

Volume

42,400km³

Watershed

3 614km²

Shoreline

8,1km

Shore dev. idx

2,92

Residence time

4days

Elevation

312m

HydroLAKES v1.0 (Messager et al. 2016) · 1.4M lacs ≥ 0.1 km² mondialement.