Ontologia

HydroBASINS lev08 watershed · #4080616380

Bassin de 八戸川

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 4 administrative regions : Gōtsu, Hamada, Kitahiroshima, Ōnan

3% lakePfafstetter: 41301142

Sub-basin area

292,8km²

Upstream area

292,9km²

Discharge

9,03m³/s

Mean elev.

415m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de 江の川138 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

4 dept-equivalent regions (GADM L2)

8 intersecting protected areas

  • Nishichugokusanchi

    IUCN V

    Quasi National Park

    7.92 km² overlap

  • Ichigi

    IUCN IV

    Prefectural Wildlife Protection Area

    5.85 km² overlap

  • Senjokei

    IUCN IV

    Prefectural Wildlife Protection Area

    3.85 km² overlap

  • Senjo Kei

    IUCN V

    Prefectural Natural Park

    3.56 km² overlap

  • Kazenokuni

    IUCN IV

    Prefectural Wildlife Protection Area

    1.78 km² overlap

  • Mitsuishi yama

    IUCN IV

    Prefectural Wildlife Protection Area

    1.19 km² overlap

  • Kakoyasan

    IUCN IV

    Prefectural Wildlife Protection Area

    0.60 km² overlap

  • Tenguishiyama

    IUCN IV

    Prefectural Wildlife Protection Area

    0.12 km² overlap

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

Species present

413 distinct species · 663 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

663 obs · 11 cellules
Obs. / cellule
≥ 411
60–410
34–59
23–33
< 23

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

Ecological tissue

Sample of 9 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 八戸川 : 7 espèces reliées par 10 interactions GloBI sur 4 types (connectance 22.2%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
10
Interactions affichées
10
Connectance
0.222
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°

12,1°C

Annual rain

1 878mm

Moisture idx (CMI)

0,51

Runoff

963mm/an

PET

909mm

AET

908mm

Mean slope

14,1°

Water table

458cm

Forest

100%

Crops

1%

Urban

0%

Protected

8%

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