Wetland of International Importance (Ramsar Site) · jpn
Biwa-ko
- Area
- 652 km²
- IUCN cat.
- Not Reported
- Year
- 1993
Overview
- Designation
- Wetland of International Importance (Ramsar Site)
- Established
- 1993
- Managing authority
- Ministry of the Environment
Source : WDPA (UNEP-WCMC, World Database on Protected Areas).
Species present
945 distinct species · 9 824 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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).
Indicateurs du tissu écologique
Tissu écologique de Biwa-ko : 24 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 55 interactions GloBI sur 2 types (connectance 10.4%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology5 basins · 2 lakes · 43 rivers
Hydrology metrics for this exact territory
Stream length here
167,7km
Lake surface here
646,58km²
Basins crossed
5
Max stream order
5
Max drainage
4 202km²
Discharge in basins
79,2m³/s
Mean precip.
1 904mm/an
Mean T°
13,3°C
Moisture idx
0,49
Max snow
14%
Mean runoff
1 170mm/an
Mean elev. (basins)
299m
Watersheds crossing here
Lakes (2, top by area)
Rivers / streams (43, ord ≥ 4)
- 田川ord 4len here29.48 km67%total44 km
- 川道川ord 4len here20.80 km100%total21 km
- 安食川ord 2len here11.97 km57%total21 km
- 鴨川ord 4len here9.42 km33%total28 km
- 柳川ord 2len here8.81 km83%total11 km
- 大同川ord 2len here6.89 km49%total14 km
- 愛知川ord 4len here6.52 km12%total53 km
- 草津川ord 5len here6.45 km34%total19 km
- 鵜川ord 1len here5.35 km76%total7 km
- 真野川ord 1len here5.02 km41%total12 km
- 阪畑川ord 2len here4.72 km100%total5 km
- 大谷川ord 1len here4.39 km19%total23 km
31 more river segmentssorted by Strahler order + length
- 日野川ord 3len here4.37 km10%total45 km
- 南川ord 3len here3.77 km19%total20 km
- 天川ord 1len here3.61 km45%total8 km
- 瀬田川ord 5len here3.18 km16%total20 km
- 姉川ord 4len here3.13 km10%total32 km
- 野洲川ord 4len here2.26 km5%total49 km
- 長命寺川ord 1len here2.06 km58%total4 km
- 和迩川ord 2len here2.06 km19%total11 km
- 大倉川ord 1len here1.97 km25%total8 km
- 余呉川ord 2len here1.94 km21%total9 km
- 中ノ川ord 1len here1.90 km70%total3 km
- 大川ord 3len here1.76 km11%total16 km
- 蛇砂川ord 1len here1.60 km7%total23 km
- 八幡川ord 1len here1.59 km44%total4 km
- 葉山川ord 5len here1.47 km18%total8 km
- 比良川ord 1len here1.46 km34%total4 km
- 野瀬川ord 3len here1.31 km8%total16 km
- 藤ノ木川ord 1len here1.30 km35%total4 km
- 川原谷ord 1len here1.04 km14%total8 km
- 野離子川ord 1len here0.95 km100%total1 km
- 深町川ord 2len here0.81 km22%total4 km
- 安土川ord 2len here0.70 km38%total2 km
- 林照寺川ord 1len here0.70 km34%total2 km
- 雄琴川ord 1len here0.69 km25%total3 km
- 丁野木川ord 1len here0.55 km97%total1 km
- 針江大川ord 1len here0.45 km33%total1 km
- 上郷川ord 2len here0.42 km7%total6 km
- 十禅寺川ord 5len here0.39 km66%total1 km
- 殿田川ord 5len here0.38 km15%total3 km
- 前川ord 5len here0.05 km0%total12 km
- 狼川ord 1len here0.01 km1%total1 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Location
Fond cartographique : OpenFreeMap · © OpenStreetMap contributors · Géométrie : nos sources (GADM/HydroBASINS/HydroLAKES/HydroRIVERS/WDPA)
- Centroid
- 35.24729, 136.08093
- Open in maps
- OpenStreetMap → · Satellite →
Species observed (Phase 2)
Listing species observed within this protected area requires the GBIF v2 partition × WDPA spatial overlay matview. Computing infrastructure pending.