Ontologia

HydroBASINS lev08 watershed · #4080044870

Bassin de 境川

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 20 administrative regions : Ayase, Chigasaki, Ebina, Fujisawa, Hachiōji +15

Coastal basinPfafstetter: 41301733

Sub-basin area

1 041,1km²

Upstream area

1 041,1km²

Discharge

0,81m³/s

Mean elev.

43m

Administrative coverage

20 dept-equivalent regions (GADM L2)

12 more

30 intersecting protected areas

  • Kamakura

    IUCN IV

    Prefectural Wildlife Protection Area

    39.69 km² overlap

  • Common fishery right area(Kanagawa)

    IUCN VI

    Common fishery right area

    28.18 km² overlap

  • Ogusuyama

    IUCN IV

    Prefectural Wildlife Protection Area

    8.23 km² overlap

  • Enkaizan

    IUCN IV

    Prefectural Wildlife Protection Area

    4.72 km² overlap

  • Futagoyama

    IUCN IV

    Prefectural Wildlife Protection Area

    3.03 km² overlap

  • Kodomonokuni

    IUCN IV

    Prefectural Wildlife Protection Area

    2.96 km² overlap

  • Kannonzaki

    IUCN IV

    Prefectural Wildlife Protection Area

    2.12 km² overlap

  • Jogashima

    IUCN IV

    Prefectural Wildlife Protection Area

    1.95 km² overlap

  • Takeyama

    IUCN V

    Suburban Special Green Conservation Areas

    1.90 km² overlap

21 more protected areas

  • Tamagawa

    IUCN IV

    Prefectural Wildlife Protection Area

    1.41 km² overlap

  • Kamakura

    IUCN V

    Suburban Special Green Conservation Areas

    1.29 km² overlap

  • Enkaizan

    IUCN V

    Suburban Special Green Conservation Areas

    1.24 km² overlap

  • Kodomonokuni

    IUCN IV

    Prefectural Wildlife Protection Area

    1.19 km² overlap

  • Enoshima

    IUCN IV

    Prefectural Wildlife Protection Area

    0.99 km² overlap

  • Isshiki

    IUCN IV

    Prefectural Wildlife Protection Area

    0.93 km² overlap

  • Oomaruyama

    IUCN V

    Suburban Special Green Conservation Areas

    0.73 km² overlap

  • Sagamihara

    IUCN V

    Suburban Special Green Conservation Areas

    0.68 km² overlap

  • Koajiro

    IUCN V

    Suburban Special Green Conservation Areas

    0.65 km² overlap

  • Komorebino mori

    IUCN IV

    Prefectural Wildlife Protection Area

    0.63 km² overlap

  • Koajirono mori

    IUCN IV

    Prefectural Wildlife Protection Area

    0.62 km² overlap

  • Tsukui

    IUCN IV

    Prefectural Wildlife Protection Area

    0.61 km² overlap

  • Shonan Village Meguri no Mori

    IUCN Not Applicable

    OECM

    0.59 km² overlap

  • Miho

    IUCN V

    Special green space conservation districts

    0.56 km² overlap

  • Kodomo shizen koen

    IUCN IV

    Prefectural Wildlife Protection Area

    0.55 km² overlap

  • Kinugasa-oogusuyama

    IUCN V

    Suburban Special Green Conservation Areas

    0.49 km² overlap

  • Zushionoji

    IUCN IV

    Prefectural Wildlife Protection Area

    0.47 km² overlap

  • Hikichigawazoi ryokuchi

    IUCN IV

    Prefectural Wildlife Protection Area

    0.44 km² overlap

  • Sangaokayama

    IUCN V

    Suburban Special Green Conservation Areas

    0.41 km² overlap

  • Izumino mori

    IUCN IV

    Prefectural Wildlife Protection Area

    0.40 km² overlap

  • Sankeien

    IUCN IV

    Prefectural Wildlife Protection Area

    0.38 km² overlap

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

Species present

7 781 distinct species · 262 791 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

262 791 obs · 31 cellules
Obs. / cellule
≥ 22 538
15 862–22 537
10 313–15 861
7 114–10 312
< 7 114

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

Ecological tissue

Sample of 37 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 境川 : 27 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 62 interactions GloBI sur 5 types (connectance 7.9%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
40
Interactions affichées
62
Connectance
0.080
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°

15,3°C

Annual rain

1 562mm

Moisture idx (CMI)

0,36

Runoff

831mm/an

PET

1 002mm

AET

997mm

Mean slope

2,6°

Water table

89cm

Forest

5%

Crops

6%

Urban

98%

Protected

7%

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