Ontologia

City · JPN

Ōtsu

Japan

CfaTemperate, no dry season, hot summer(95 %)

Species observed

2 067

Observations

14 819

Area

376km²

Ecological tissue

Sample of 35 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 Ōtsu : 31 espèces reliées par 54 interactions GloBI sur 3 types (connectance 8.6%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
36
Interactions affichées
54
Connectance
0.086
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

2 067 distinct species · 14 819 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

14 819 obs · 14 cellules
Obs. / cellule
≥ 3 382
2 963–3 381
1 221–2 962
704–1 220
< 704

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

Climate

Mean T°

14,2°C

Annual rain

1 940mm

Warmest m°

29,6°C

Coldest m°

-2,0°C

Elevation: 321 m on average (min 84 m, max 982 m)

Bioclimatic detailsExpert
Annual mean temp.
14,2°C
Annual rain
1 940mm
Warmest month
29,6°C
Coldest month
-2,0°C
Mean alt.
321m
Min
84m
Max
982m
Std. dev.
226m
Köppen-Geiger (dominant)
CfaTemperate, no dry season, hot summer(95 %)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

53,5g/kg

Clay

29,2%

Sand

37,1%

Silt

33,7%

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
83,4g/kg
Clay
28,8%
Sand
37,5%
Silt
33,7%
5–15 cm
pH H₂O
5,1
Org. C
49,0g/kg
Clay
29,7%
Sand
36,5%
Silt
33,8%
15–30 cm
pH H₂O
5,2
Org. C
28,1g/kg
Clay
29,2%
Sand
37,3%
Silt
33,6%

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

Land cover

Forest65.6%
Crops4.7%
Built-up4.3%
Bare soil0.5%
Other (grassland, water…)24.9%

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

Hydrology4 basins · 1 lakes · 32 rivers

Hydrology metrics for this exact territory

Stream length here

115,0km

Lake surface here

13,92km²

Basins crossed

4

Max stream order

5

Max drainage

4 202km²

Discharge in basins

90,9m³/s

Mean precip.

1 747mm/an

Mean T°

13,8°C

Moisture idx

0,41

Max snow

15%

Mean runoff

1 008mm/an

Mean elev. (basins)

247m

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

2,5nW

Built-up

433,5%

Pesticides

66,4kg/km²

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

Protected areas18

IUCN IV · 10IUCN V · 4IUCN Not Applicable · 2IUCN Not Reported · 1IUCN III · 1

Biwako

IUCN V

Quasi National Park · 1950

965 km²

Biwako

IUCN IV

Prefectural Wildlife Protection Area · 2021

729 km²

Biwa-ko

IUCN Not Reported

Wetland of International Importance (Ramsar Site) · 1993

652 km²

Complete list

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