Ontologia

City · JPN

Saga

Japan

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

Species observed

1 065

Observations

17 764

Area

440,2km²

Ecological tissue

Sample of 22 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 Saga : 15 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 51 interactions GloBI sur 2 types (connectance 20.2%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
23
Interactions affichées
51
Connectance
0.202
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

1 065 distinct species · 17 764 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

17 764 obs · 17 cellules
Obs. / cellule
≥ 10 904
2 796–10 903
325–2 795
235–324
< 235

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

Climate

Mean T°

16,0°C

Annual rain

2 165mm

Warmest m°

29,2°C

Coldest m°

1,6°C

Elevation: 224 m on average (min -4 m, max 861 m)

Bioclimatic detailsExpert
Annual mean temp.
16,0°C
Annual rain
2 165mm
Warmest month
29,2°C
Coldest month
1,6°C
Mean alt.
224m
Min
-4m
Max
861m
Std. dev.
239m
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

5,3

Org. C

47,0g/kg

Clay

32,4%

Sand

32,5%

Silt

35,1%

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

Dominant lithology: mtGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,2
Org. C
68,8g/kg
Clay
32,1%
Sand
32,9%
Silt
35,0%
5–15 cm
pH H₂O
5,2
Org. C
44,4g/kg
Clay
32,4%
Sand
32,3%
Silt
35,3%
15–30 cm
pH H₂O
5,3
Org. C
27,8g/kg
Clay
32,7%
Sand
32,3%
Silt
35,0%

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

Land cover

Forest48.6%
Crops14.2%
Built-up5.4%
Bare soil1.0%
Other (grassland, water…)30.9%

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

Hydrology8 basins · 2 lakes · 27 rivers

Hydrology metrics for this exact territory

Stream length here

141,6km

Lake surface here

1,84km²

Basins crossed

8

Max stream order

5

Max drainage

2 796km²

Discharge in basins

43,7m³/s

Mean precip.

2 004mm/an

Mean T°

15,0°C

Moisture idx

0,48

Max snow

11%

Mean runoff

1 170mm/an

Mean elev. (basins)

224m

Watersheds crossing here

Lakes (2, top by area)

Rivers / streams (27, ord ≥ 4)

15 more river segments

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

Human pressure

Pop. density

4hab/km²

Night light

2,2nW

Built-up

535,6%

Pesticides

92,8kg/km²

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

Protected areas17

IUCN IV · 11IUCN V · 5IUCN VI · 1🌊 Marine · 3

Ten zan

IUCN V

Prefectural Natural Park · 1970

50 km²

Ishigama

IUCN IV

Prefectural Wildlife Protection Area · 2007

14 km²

Complete list

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