Ontologia

HydroBASINS lev08 watershed · #4080038470

Bassin de 当縁川

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 4 administrative regions : Makubetsu, Sarabetsu, Taiki, Toyokoro

Coastal basin 4% lakePfafstetter: 41200191

Sub-basin area

464,2km²

Upstream area

464,2km²

Discharge

3,95m³/s

Mean elev.

78m

Administrative coverage

4 dept-equivalent regions (GADM L2)

6 intersecting protected areas

  • Yudo

    IUCN IV

    Prefectural Wildlife Protection Area

    9.14 km² overlap

  • Tokachi

    IUCN VI

    Coastline Marine Resource Development Area, designated sea area

    8.45 km² overlap

  • Common fishery right area(Hokkaido)

    IUCN VI

    Common fishery right area

    8.43 km² overlap

  • Forest of Seika

    IUCN Not Applicable

    OECM

    2.69 km² overlap

  • Otsu

    IUCN IV

    Prefectural Wildlife Protection Area

    1.55 km² overlap

  • Horokayantou

    IUCN IV

    Prefectural Wildlife Protection Area

    0.64 km² overlap

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

Species present

379 distinct species · 825 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

825 obs · 14 cellules
Obs. / cellule
≥ 305
179–304
57–178
31–56
< 31

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

Ecological tissue

Sample of 40 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 当縁川 : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 65 interactions GloBI sur 5 types (connectance 8.3%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
40
Interactions affichées
65
Connectance
0.083
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°

5,7°C

Annual rain

1 141mm

Moisture idx (CMI)

0,37

Runoff

836mm/an

PET

719mm

AET

696mm

Mean slope

4,2°

Water table

132cm

Forest

45%

Crops

20%

Urban

0%

Protected

3%

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