Ontologia

HydroBASINS lev08 watershed · #4080037250

Bassin de 堀株川

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 11 administrative regions : Furubira, Iwanai, Kamoenai, Kutchan, Kyōwa +6

Coastal basinPfafstetter: 41200117

Sub-basin area

1 150,7km²

Upstream area

1 150,7km²

Discharge

3,61m³/s

Mean elev.

325m

Administrative coverage

11 dept-equivalent regions (GADM L2)

3 more

13 intersecting protected areas

  • Niseko-Shakotan-Otarukaigan

    IUCN II

    Quasi National Park

    117.50 km² overlap

  • Common fishery right area(Hokkaido)

    IUCN VI

    Common fishery right area

    31.59 km² overlap

  • Kita shiribeshi

    IUCN VI

    Coastline Marine Resource Development Area, designated sea area

    17.34 km² overlap

  • Minami shiribeshi

    IUCN VI

    Coastline Marine Resource Development Area, designated sea area

    12.35 km² overlap

  • Hattari

    IUCN IV

    Prefectural Wildlife Protection Area

    4.34 km² overlap

  • Oyachi

    IUCN IV

    Prefectural Wildlife Protection Area

    4.31 km² overlap

  • Musawa

    IUCN IV

    Prefectural Wildlife Protection Area

    3.52 km² overlap

  • Yoichi

    IUCN IV

    Prefectural Wildlife Protection Area

    3.15 km² overlap

  • Kokkuriko

    IUCN IV

    Prefectural Wildlife Protection Area

    1.63 km² overlap

4 more protected areas

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

Species present

695 distinct species · 2 454 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 454 obs · 32 cellules
Obs. / cellule
≥ 524
165–523
83–164
41–82
< 41

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

Ecological tissue

Sample of 36 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 堀株川 : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 36 interactions GloBI sur 5 types (connectance 5.1%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
36
Connectance
0.051
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°

6,5°C

Annual rain

1 372mm

Moisture idx (CMI)

0,48

Runoff

1 026mm/an

PET

714mm

AET

650mm

Mean slope

13,8°

Water table

401cm

Forest

86%

Crops

4%

Urban

1%

Protected

11%

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