Ontologia

City · JPN

Itoigawa

Japan

CfaTemperate, no dry season, hot summer(51 %)

Species observed

1 551

Observations

7 936

Area

773,5km²

Ecological tissue

Sample of 20 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 Itoigawa : 11 espèces reliées par 23 interactions GloBI sur 4 types (connectance 12.1%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
20
Interactions affichées
23
Connectance
0.121
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

1 551 distinct species · 7 936 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

7 936 obs · 22 cellules
Obs. / cellule
≥ 3 513
799–3 512
198–798
102–197
< 102

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

Climate

Mean T°

10,2°C

Annual rain

3 315mm

Warmest m°

25,1°C

Coldest m°

-4,7°C

Elevation: 685 m on average (min -109 m, max 2 625 m)

Bioclimatic detailsExpert
Annual mean temp.
10,2°C
Annual rain
3 315mm
Warmest month
25,1°C
Coldest month
-4,7°C
Mean alt.
685m
Min
-109m
Max
2 625m
Std. dev.
528m
Köppen-Geiger (dominant)
CfaTemperate, no dry season, hot summer(51 %)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

81,0g/kg

Clay

27,7%

Sand

36,8%

Silt

35,4%

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

Dominant lithology: vbGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,0
Org. C
116,5g/kg
Clay
27,2%
Sand
37,0%
Silt
35,7%
5–15 cm
pH H₂O
5,0
Org. C
82,4g/kg
Clay
28,0%
Sand
36,3%
Silt
35,7%
15–30 cm
pH H₂O
5,1
Org. C
44,1g/kg
Clay
27,9%
Sand
37,2%
Silt
34,9%

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

Land cover

Forest72.7%
Crops3.0%
Built-up0.7%
Bare soil1.4%
Other (grassland, water…)22.2%

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

Hydrology5 basins · 0 lakes · 60 rivers

Hydrology metrics for this exact territory

Stream length here

275,1km

Basins crossed

5

Max stream order

4

Max drainage

899km²

Discharge in basins

17,0m³/s

Mean precip.

1 884mm/an

Mean T°

10,1°C

Moisture idx

0,51

Max snow

48%

Mean runoff

1 616mm/an

Mean elev. (basins)

644m

Watersheds crossing here

Rivers / streams (60, ord ≥ 4)

48 more river segments

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

Human pressure

Pop. density

0hab/km²

Night light

0,4nW

Built-up

67,9%

Pesticides

103,8kg/km²

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

Protected areas29

IUCN IV · 17IUCN V · 9IUCN II · 2IUCN VI · 1🌊 Marine · 3

Kita alps

IUCN IV

National Wildlife Protection Area · 2014

1 102 km²

Myokosan

IUCN IV

Prefectural Wildlife Protection Area · 2014

135 km²

Hakubarenge

IUCN IV

Prefectural Wildlife Protection Area · 2020

81 km²

Complete list

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