Ontologia

Town · JPN

Ōnan

Japan

CfaTemperate, no dry season, hot summer(100 %)

Species observed

140

Observations

351

Area

416km²

Ecological tissue

Sample of 6 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 Ōnan : 5 espèces reliées par 9 interactions GloBI sur 2 types (connectance 25.0%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
9
Interactions affichées
9
Connectance
0.250
Patrimoniales
0
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Species present

140 distinct species · 351 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

351 obs · 15 cellules
Obs. / cellule
≥ 54
52–53
22–51
18–21
< 18

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

Climate

Mean T°

13,7°C

Annual rain

1 851mm

Warmest m°

28,6°C

Coldest m°

-2,1°C

Elevation: 404 m on average (min 161 m, max 1 022 m)

Bioclimatic detailsExpert
Annual mean temp.
13,7°C
Annual rain
1 851mm
Warmest month
28,6°C
Coldest month
-2,1°C
Mean alt.
404m
Min
161m
Max
1 022m
Std. dev.
122m
Köppen-Geiger (dominant)
CfaTemperate, no dry season, hot summer(100 %)Temperate

CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)

Soil & lithology

pH H₂O

5,0

Org. C

63,9g/kg

Clay

28,8%

Sand

34,0%

Silt

37,2%

Average over 0-30 cm. Per-depth details in expert panel.

Dominant lithology: paGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,0
Org. C
104,5g/kg
Clay
28,1%
Sand
34,3%
Silt
37,6%
5–15 cm
pH H₂O
5,0
Org. C
60,2g/kg
Clay
28,6%
Sand
33,8%
Silt
37,6%
15–30 cm
pH H₂O
5,0
Org. C
27,0g/kg
Clay
29,6%
Sand
34,0%
Silt
36,4%

SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)

Land cover

Forest89.5%
Crops2.9%
Built-up0.6%
Bare soil0.2%
Other (grassland, water…)6.9%

Copernicus Global Land Cover 100m (Buchhorn et al. 2020)

Hydrology6 basins · 1 lakes · 28 rivers

Hydrology metrics for this exact territory

Stream length here

121,0km

Lake surface here

0,04km²

Basins crossed

6

Max stream order

5

Max drainage

14 401km²

Discharge in basins

37,9m³/s

Mean precip.

1 827mm/an

Mean T°

12,3°C

Moisture idx

0,49

Max snow

19%

Mean runoff

940mm/an

Mean elev. (basins)

377m

Watersheds crossing here

Lakes (1, top by area)

Rivers / streams (28, ord ≥ 4)

16 more river segments

Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10

Human pressure

Pop. density

0hab/km²

Night light

0,1nW

Built-up

57,6%

Pesticides

85,6kg/km²

GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)

Protected areas12

IUCN IV · 8IUCN V · 4

Inubushiyama

IUCN IV

Prefectural Wildlife Protection Area · 2014

9 km²

Ichigi

IUCN IV

Prefectural Wildlife Protection Area · 2023

6 km²

Senjokei

IUCN IV

Prefectural Wildlife Protection Area · 2016

4 km²

Complete list

WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN