Ontologia

HydroBASINS lev08 watershed · #4080043400

Bassin de 石沢川

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 10 administrative regions : Akita, Daisen, Mamurogawa, Nikaho, Sakata +5

Coastal basinPfafstetter: 41301350

Sub-basin area

2 096,1km²

Upstream area

2 096,1km²

Discharge

1,8m³/s

Mean elev.

293m

Administrative coverage

10 dept-equivalent regions (GADM L2)

2 more

30 intersecting protected areas

  • Chokai

    IUCN V

    Quasi National Park

    294.69 km² overlap

  • Chokaisan

    IUCN IV

    Biocenosis Protected Forest

    71.35 km² overlap

  • Chokai-Asahi and Iide-Azuma

    IUCN V

    Green Corridor

    65.02 km² overlap

  • Haraikawa

    IUCN IV

    Prefectural Wildlife Protection Area

    36.74 km² overlap

  • Hokodate

    IUCN IV

    Prefectural Wildlife Protection Area

    26.82 km² overlap

  • Chokai

    IUCN IV

    Prefectural Wildlife Protection Area

    23.05 km² overlap

  • Nikahokonoura

    IUCN IV

    Prefectural Wildlife Protection Area

    18.40 km² overlap

  • Common fishery right area(Akita)

    IUCN VI

    Common fishery right area

    14.27 km² overlap

  • Ishizawa

    IUCN IV

    Prefectural Wildlife Protection Area

    12.83 km² overlap

21 more protected areas

  • Michikawa

    IUCN IV

    Prefectural Wildlife Protection Area

    12.26 km² overlap

  • Mizubayashi

    IUCN IV

    Prefectural Wildlife Protection Area

    8.73 km² overlap

  • Kamikosugano

    IUCN IV

    Prefectural Wildlife Protection Area

    8.63 km² overlap

  • Nakatashiro

    IUCN IV

    Prefectural Wildlife Protection Area

    6.84 km² overlap

  • Common fishery right area(Yamagata)

    IUCN VI

    Common fishery right area

    6.35 km² overlap

  • Nishime

    IUCN IV

    Prefectural Wildlife Protection Area

    5.96 km² overlap

  • Kosagawa

    IUCN IV

    Prefectural Wildlife Protection Area

    5.67 km² overlap

  • Kisakatarinkai

    IUCN IV

    Prefectural Wildlife Protection Area

    4.80 km² overlap

  • Araya

    IUCN IV

    Prefectural Wildlife Protection Area

    4.74 km² overlap

  • Momoyake

    IUCN IV

    Prefectural Wildlife Protection Area

    3.75 km² overlap

  • Honjohama

    IUCN IV

    Prefectural Wildlife Protection Area

    3.73 km² overlap

  • Takashiro

    IUCN IV

    Prefectural Wildlife Protection Area

    3.35 km² overlap

  • Ishiwaki

    IUCN IV

    Prefectural Wildlife Protection Area

    3.33 km² overlap

  • Horowasan

    IUCN IV

    Prefectural Wildlife Protection Area

    3.13 km² overlap

  • Iwaya

    IUCN IV

    Prefectural Wildlife Protection Area

    3.07 km² overlap

  • Hamadate

    IUCN IV

    Prefectural Wildlife Protection Area

    3.05 km² overlap

  • Yachi

    IUCN IV

    Prefectural Wildlife Protection Area

    2.83 km² overlap

  • Tobishima

    IUCN IV

    Prefectural Wildlife Protection Area

    2.76 km² overlap

  • Mogamigawa kako

    IUCN IV

    National Wildlife Protection Area

    2.55 km² overlap

  • Takaozan

    IUCN IV

    Prefectural Wildlife Protection Area

    2.42 km² overlap

  • Oyakawa

    IUCN IV

    Prefectural Wildlife Protection Area

    2.26 km² overlap

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

Species present

3 529 distinct species · 38 191 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

38 191 obs · 63 cellules
Obs. / cellule
≥ 12 448
1 074–12 447
354–1 073
227–353
< 227

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

Ecological tissue

Sample of 25 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 石沢川 : 18 espèces reliées par 50 interactions GloBI sur 3 types (connectance 14.2%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
27
Interactions affichées
50
Connectance
0.142
Patrimoniales
0
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°

10,0°C

Annual rain

1 843mm

Moisture idx (CMI)

0,54

Runoff

1 368mm/an

PET

851mm

AET

837mm

Mean slope

9,1°

Water table

264cm

Forest

70%

Crops

7%

Urban

4%

Protected

20%

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