Ontologia

City · JPN

Okayama

Japan

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

Species observed

1 824

Observations

30 607

Area

748km²

Ecological tissue

Sample of 30 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 Okayama : 25 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 54 interactions GloBI sur 4 types (connectance 9.6%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
34
Interactions affichées
54
Connectance
0.096
Patrimoniales
2
Plus dense que (national)0 %(top 100%)

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

Species present

1 824 distinct species · 30 607 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

30 607 obs · 23 cellules
Obs. / cellule
≥ 13 768
2 921–13 767
465–2 920
236–464
< 236

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

Climate

Mean T°

16,2°C

Annual rain

1 327mm

Warmest m°

30,7°C

Coldest m°

0,8°C

Elevation: 95 m on average (min -16 m, max 424 m)

Bioclimatic detailsExpert
Annual mean temp.
16,2°C
Annual rain
1 327mm
Warmest month
30,7°C
Coldest month
0,8°C
Mean alt.
95m
Min
-16m
Max
424m
Std. dev.
96m
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

5,7

Org. C

32,4g/kg

Clay

29,5%

Sand

31,8%

Silt

38,7%

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

Dominant lithology: paGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,7
Org. C
49,6g/kg
Clay
28,2%
Sand
32,7%
Silt
39,1%
5–15 cm
pH H₂O
5,7
Org. C
27,7g/kg
Clay
28,9%
Sand
32,0%
Silt
39,1%
15–30 cm
pH H₂O
5,7
Org. C
19,7g/kg
Clay
31,5%
Sand
30,8%
Silt
37,8%

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

Land cover

Forest46.2%
Crops9.6%
Built-up6.7%
Bare soil0.5%
Other (grassland, water…)37.1%

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

Hydrology6 basins · 1 lakes · 32 rivers

Hydrology metrics for this exact territory

Stream length here

214,9km

Lake surface here

0,42km²

Basins crossed

6

Max stream order

5

Max drainage

2 984km²

Discharge in basins

9,2m³/s

Mean precip.

1 413mm/an

Mean T°

13,9°C

Moisture idx

0,24

Max snow

14%

Mean runoff

764mm/an

Mean elev. (basins)

216m

Watersheds crossing here

Lakes (1, top by area)

Rivers / streams (32, ord ≥ 4)

20 more river segments

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

Human pressure

Pop. density

6hab/km²

Night light

3,6nW

Built-up

669,0%

Pesticides

82,3kg/km²

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

Protected areas24

IUCN V · 11IUCN IV · 10IUCN Not Applicable · 2IUCN VI · 1🌊 Marine · 5

Kibi Seiryu

IUCN V

Prefectural Natural Park · 2009

45 km²

Kibishiseki

IUCN V

Prefectural Natural Park · 2009

24 km²

Mitani yama

IUCN IV

Prefectural Wildlife Protection Area · 2015

11 km²

Complete list

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