Ontologia

HydroBASINS lev08 watershed · #4080041400

Bassin de 広川

A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.

Crosses 9 administrative regions : Arida, Aridagawa, Gobō, Hidaka, Hidakagawa +4

Coastal basinPfafstetter: 41301113

Sub-basin area

213,1km²

Upstream area

213,3km²

Discharge

6,75m³/s

Mean elev.

123m

Administrative coverage

9 dept-equivalent regions (GADM L2)

1 more

11 intersecting protected areas

  • Common fishery right area(Wakayama)

    IUCN VI

    Common fishery right area

    17.54 km² overlap

  • Enju kaigan

    IUCN V

    Prefectural Natural Park

    16.71 km² overlap

  • Nishiarida

    IUCN V

    Prefectural Natural Park

    7.96 km² overlap

  • Shirasaki kaigan

    IUCN V

    Prefectural Natural Park

    6.48 km² overlap

  • Mihama

    IUCN IV

    Prefectural Wildlife Protection Area

    3.75 km² overlap

  • Hirokawa seibu

    IUCN IV

    Prefectural Wildlife Protection Area

    3.32 km² overlap

  • Enjugahama

    IUCN IV

    Prefectural Wildlife Protection Area

    2.10 km² overlap

  • Hidaka

    IUCN IV

    Prefectural Wildlife Protection Area

    1.66 km² overlap

  • Ao

    IUCN IV

    Prefectural Wildlife Protection Area

    0.58 km² overlap

2 more protected areas

  • Kuroshima

    IUCN IV

    Prefectural Wildlife Protection Area

    0.35 km² overlap

  • Aridagawa

    IUCN IV

    Prefectural Wildlife Protection Area

    0.34 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

732 distinct species · 1 763 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 763 obs · 9 cellules
Obs. / cellule
≥ 471
471–470
293–470
153–292
< 153

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

Ecological tissue

Sample of 35 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 Bassin de 広川 : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 32 interactions GloBI sur 3 types (connectance 5.4%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
35
Interactions affichées
32
Connectance
0.054
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

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

Hydroclimate (BasinATLAS lev08)

Mean T°

15,7°C

Annual rain

1 782mm

Moisture idx (CMI)

0,45

Runoff

1 017mm/an

PET

968mm

AET

968mm

Mean slope

11,4°

Water table

369cm

Forest

60%

Crops

9%

Urban

17%

Protected

19%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)