Biwako
IUCN VQuasi National Park · 1950
965 km²
City · JPN
Ōmihachiman
Japan
CfaTemperate, no dry season, hot summer(100 %)
Species observed
161
Observations
361
Area
67,6km²
Ecological tissue
Sample of 33 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 Ōmihachiman : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 53 interactions GloBI sur 3 types (connectance 9.4%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
34
Interactions affichées
53
Connectance
0.095
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
161 distinct species · 361 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
15,4°C
Annual rain
1 568mm
Warmest m°
30,6°C
Coldest m°
-0,5°C
Elevation: 103 m on average (min 83 m, max 219 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
15,4°C
Annual rain
1 568mm
Warmest month
30,6°C
Coldest month
-0,5°C
Mean alt.
103m
Min
83m
Max
219m
Std. dev.
26m
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
35,4g/kg
Clay
30,3%
Sand
32,2%
Silt
37,4%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: vaGLiM
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
5,3
Org. C
61,8g/kg
Clay
30,1%
Sand
32,5%
Silt
37,4%
5–15 cm
pH H₂O
5,4
Org. C
25,4g/kg
Clay
30,4%
Sand
32,3%
Silt
37,3%
15–30 cm
pH H₂O
5,4
Org. C
18,9g/kg
Clay
30,6%
Sand
31,9%
Silt
37,5%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest20.0%
Crops20.9%
Built-up8.9%
Bare soil1.7%
Other (grassland, water…)48.5%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology2 basins · 2 lakes · 10 rivers
Hydrology metrics for this exact territory
Stream length here
22,7km
Lake surface here
0,09km²
Basins crossed
2
Max stream order
3
Max drainage
2 541km²
Discharge in basins
2,1m³/s
Mean precip.
1 774mm/an
Mean T°
13,8°C
Moisture idx
0,43
Max snow
14%
Mean runoff
1 099mm/an
Mean elev. (basins)
219m
Watersheds crossing here
Lakes (2, top by area)
Rivers / streams (10, ord ≥ 4)
- 日野川ord 3len here12.56 km28%total45 km
- 蛇砂川ord 1len here4.51 km20%total23 km
- 長命寺川ord 1len here1.58 km44%total4 km
- 八幡川ord 1len here1.17 km32%total4 km
- 藤間川ord 3len here0.98 km100%total1 km
- 大同川ord 2len here0.91 km7%total14 km
- 家棟川ord 4len here0.55 km6%total8 km
- 惣四郎川ord 2len here0.29 km4%total7 km
- 新川ord 1len here0.13 km3%total5 km
- 蛇砂川北流ord 2len here≈ tangenttotal4 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
8hab/km²
Night light
3,6nW
Built-up
887,5%
Pesticides
93,6kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas5
IUCN V · 2IUCN IV · 2IUCN Not Reported · 1
Biwako
IUCN IVPrefectural Wildlife Protection Area · 2021
729 km²
Biwa-ko
IUCN Not ReportedWetland of International Importance (Ramsar Site) · 1993
652 km²
Mikami-tanakami-shigaraki
IUCN VPrefectural Natural Park · 1968
183 km²
Nishinoko
IUCN IVPrefectural Wildlife Protection Area · 2016
6 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN