Ontologia

City · JPN

Yamaguchi

Japan

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

Species observed

2 449

Observations

16 980

Area

731,7km²

Ecological tissue

Sample of 21 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 Yamaguchi : 13 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 51 interactions GloBI sur 2 types (connectance 22.1%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
22
Interactions affichées
51
Connectance
0.221
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

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

Species present

2 449 distinct species · 16 980 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

16 980 obs · 25 cellules
Obs. / cellule
≥ 5 331
1 929–5 330
435–1 928
139–434
< 139

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

Climate

Mean T°

15,4°C

Annual rain

2 093mm

Warmest m°

29,1°C

Coldest m°

0,9°C

Elevation: 234 m on average (min -11 m, max 875 m)

Bioclimatic detailsExpert
Annual mean temp.
15,4°C
Annual rain
2 093mm
Warmest month
29,1°C
Coldest month
0,9°C
Mean alt.
234m
Min
-11m
Max
875m
Std. dev.
178m
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

5,1

Org. C

44,5g/kg

Clay

32,3%

Sand

35,0%

Silt

32,7%

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

Dominant lithology: paGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,1
Org. C
72,4g/kg
Clay
31,7%
Sand
35,3%
Silt
33,0%
5–15 cm
pH H₂O
5,1
Org. C
40,4g/kg
Clay
32,5%
Sand
34,8%
Silt
32,7%
15–30 cm
pH H₂O
5,1
Org. C
20,7g/kg
Clay
32,8%
Sand
34,8%
Silt
32,4%

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

Land cover

Forest73.3%
Crops4.7%
Built-up2.6%
Bare soil0.3%
Other (grassland, water…)19.1%

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

Hydrology1 basins · 5 lakes · 41 rivers

Hydrology metrics for this exact territory

Stream length here

232,5km

Lake surface here

1,46km²

Basins crossed

1

Max stream order

4

Max drainage

14 401km²

Discharge in basins

0,3m³/s

Mean precip.

1 742mm/an

Mean T°

13,6°C

Moisture idx

0,42

Max snow

11%

Mean runoff

886mm/an

Mean elev. (basins)

273m

Watersheds crossing here

Lakes (5, top by area)

Rivers / streams (41, ord ≥ 4)

29 more river segments

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

Human pressure

Pop. density

2hab/km²

Night light

0,9nW

Built-up

261,4%

Pesticides

87,5kg/km²

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

Protected areas22

IUCN IV · 17IUCN V · 3IUCN VI · 1IUCN III · 1🌊 Marine · 4

Chomon Kyo

IUCN V

Prefectural Natural Park · 1993

58 km²

Oharako

IUCN IV

Prefectural Wildlife Protection Area · 1962

31 km²

Ajisu

IUCN IV

Prefectural Wildlife Protection Area · 2022

11 km²

Kiwa

IUCN IV

Prefectural Wildlife Protection Area · 1967

11 km²

Complete list

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