Ontologia

HydroBASINS lev08 watershed · #4080045820

Bassin de 国府川

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 1 administrative regions : Sado

Coastal basin 5% lakePfafstetter: 41309000

Sub-basin area

908km²

Upstream area

908km²

Discharge

14,39m³/s

Mean elev.

234m

Administrative coverage

1 dept-equivalent regions (GADM L2)

11 intersecting protected areas

  • Kosado

    IUCN V

    Prefectural Natural Park

    355.31 km² overlap

  • Sado-Yahiko-Yoneyama

    IUCN V

    Quasi National Park

    231.23 km² overlap

  • Kosado tobu

    IUCN IV

    National Wildlife Protection Area

    129.23 km² overlap

  • Common fishery right area(Niigata)

    IUCN VI

    Common fishery right area

    52.62 km² overlap

  • Kinpokusan

    IUCN IV

    Prefectural Wildlife Protection Area

    18.49 km² overlap

  • Kamoko

    IUCN IV

    Prefectural Wildlife Protection Area

    7.36 km² overlap

  • Niibo

    IUCN IV

    Prefectural Wildlife Protection Area

    2.53 km² overlap

  • Ichinomiya

    IUCN IV

    Prefectural Wildlife Protection Area

    0.40 km² overlap

  • Mano koen

    IUCN IV

    Prefectural Wildlife Protection Area

    0.23 km² overlap

2 more protected areas

  • Shiroyama

    IUCN IV

    Prefectural Wildlife Protection Area

    0.13 km² overlap

  • Uenotaira

    IUCN V

    Prefectural Nature Conservation Area

    0.02 km² overlap

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

Species present

1 278 distinct species · 9 764 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

9 764 obs · 26 cellules
Obs. / cellule
≥ 2 962
875–2 961
287–874
160–286
< 160

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 国府川 : 30 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 45 interactions GloBI sur 2 types (connectance 7.1%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
36
Interactions affichées
45
Connectance
0.071
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°

11,7°C

Annual rain

1 849mm

Moisture idx (CMI)

0,54

Runoff

1 192mm/an

PET

848mm

AET

836mm

Mean slope

11,5°

Water table

359cm

Forest

69%

Crops

5%

Urban

3%

Protected

65%

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