Ontologia

HydroBASINS lev08 watershed · #4080044550

Bassin de 新川

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 8 administrative regions : Asahi, Chōshi, Kamisu, Katori, Sōsa +3

Coastal basinPfafstetter: 41301711

Sub-basin area

256,4km²

Upstream area

256,4km²

Discharge

2,01m³/s

Mean elev.

14m

Administrative coverage

8 dept-equivalent regions (GADM L2)

11 intersecting protected areas

  • Kujukuri

    IUCN V

    Prefectural Natural Park

    9.62 km² overlap

  • Common fishery right area(Chiba)

    IUCN VI

    Common fishery right area

    8.89 km² overlap

  • Suigo-Tsukuba

    IUCN V

    Quasi National Park

    8.51 km² overlap

  • Choushi

    IUCN IV

    Prefectural Wildlife Protection Area

    8.09 km² overlap

  • Natsume

    IUCN IV

    Prefectural Wildlife Protection Area

    2.85 km² overlap

  • Takisato

    IUCN IV

    Prefectural Wildlife Protection Area

    1.78 km² overlap

  • Sosa shi

    IUCN IV

    Prefectural Wildlife Protection Area

    1.36 km² overlap

  • Shiraishi

    IUCN IV

    Prefectural Wildlife Protection Area

    0.47 km² overlap

  • Iizuka

    IUCN IV

    Prefectural Wildlife Protection Area

    0.44 km² overlap

2 more protected areas

  • Iidaka toyowa

    IUCN IV

    Prefectural Wildlife Protection Area

    0.25 km² overlap

  • Ryuufukuji no mori

    IUCN V

    Local Environment Conservation Area(Chiba)

    0.19 km² overlap

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

Species present

733 distinct species · 5 539 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

5 539 obs · 7 cellules
Obs. / cellule
≥ 2 631
2 631–2 630
410–2 630
391–409
< 391

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

Ecological tissue

Sample of 41 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 新川 : 30 espèces reliées par 80 interactions GloBI sur 4 types (connectance 7.7%, filtre Serrano α=0.2). 16 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
46
Interactions affichées
80
Connectance
0.077
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°

15,0°C

Annual rain

1 573mm

Moisture idx (CMI)

0,44

Runoff

771mm/an

PET

885mm

AET

876mm

Mean slope

1,0°

Water table

37cm

Forest

1%

Crops

60%

Urban

71%

Protected

10%

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