Ontologia

HydroBASINS lev08 watershed · #4080618350

Bassin de 大戸川

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 16 administrative regions : Ide, Iga, Jōyō, Konan, Kumiyama +11

84% lakePfafstetter: 41301125

Sub-basin area

818,5km²

Upstream area

4 202,3km²

Discharge

123,56m³/s

Mean elev.

235m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de 宇治川0 km²

▲ Receives from 2 basins

16 dept-equivalent regions (GADM L2)

8 more

29 intersecting protected areas

  • Biwako

    IUCN V

    Quasi National Park

    133.79 km² overlap

  • Mikami-tanakami-shigaraki

    IUCN V

    Prefectural Natural Park

    125.59 km² overlap

  • Biwako

    IUCN IV

    Prefectural Wildlife Protection Area

    87.76 km² overlap

  • Biwa-ko

    IUCN Not Reported

    Wetland of International Importance (Ramsar Site)

    61.88 km² overlap

  • Hieizan (shiga)

    IUCN IV

    Prefectural Wildlife Protection Area

    13.02 km² overlap

  • Higashiyama

    IUCN IV

    Prefectural Wildlife Protection Area

    7.75 km² overlap

  • Yamashina

    IUCN IV

    Prefectural Wildlife Protection Area

    7.50 km² overlap

  • Mimuroto

    IUCN IV

    Prefectural Wildlife Protection Area

    5.24 km² overlap

  • Shigarakicho

    IUCN IV

    Prefectural Wildlife Protection Area

    4.89 km² overlap

20 more protected areas

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

Species present

2 482 distinct species · 45 417 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

45 417 obs · 26 cellules
Obs. / cellule
≥ 10 437
4 302–10 436
1 785–4 301
897–1 784
< 897

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

Ecological tissue

Sample of 30 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 大戸川 : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 56 interactions GloBI sur 4 types (connectance 11.3%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
32
Interactions affichées
56
Connectance
0.113
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°

14,0°C

Annual rain

1 703mm

Moisture idx (CMI)

0,39

Runoff

967mm/an

PET

1 039mm

AET

1 036mm

Mean slope

7,2°

Water table

271cm

Forest

43%

Crops

8%

Urban

41%

Protected

39%

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