Lac du Bourget - Marais de Chautagne
IUCN Not ReportedWetland of International Importance (Ramsar Site) · 2003
55 km²
Commune · FRA
Vions
France
CfaTemperate, no dry season, hot summer(100 %)
Species observed
865
Observations
6 883
Area
5,6km²
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 Vions : 30 espèces + 3 bulles famille, 60 interactions GloBI documentées sur 4 types (connectance 11.4%, filtre Serrano α=0.2). Les 3 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Espèces affichées
33
Interactions affichées
60
Connectance
0.114
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
865 distinct species · 6 883 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
12,3°C
Annual rain
1 057mm
Warmest m°
26,0°C
Coldest m°
-2,0°C
Elevation: 246 m on average (min 233 m, max 362 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
12,3°C
Annual rain
1 057mm
Warmest month
26,0°C
Coldest month
-2,0°C
Mean alt.
246m
Min
233m
Max
362m
Std. dev.
17m
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
6,7
Org. C
72,1g/kg
Clay
27,9%
Sand
33,3%
Silt
38,8%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: scGLiMaggregated to Savoie
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
6,6
Org. C
111,5g/kg
Clay
27,0%
Sand
33,6%
Silt
39,5%
5–15 cm
pH H₂O
6,7
Org. C
70,0g/kg
Clay
26,5%
Sand
33,1%
Silt
40,4%
15–30 cm
pH H₂O
6,7
Org. C
34,7g/kg
Clay
30,1%
Sand
33,2%
Silt
36,7%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest57.6%
Crops19.1%
Built-up0.9%
Bare soil0.2%
Other (grassland, water…)22.3%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology2 basins · 1 lakes · 2 rivers
Hydrology metrics for this exact territory
Stream length here
5,1km
Lake surface here
0,13km²
Basins crossed
2
Max stream order
5
Max drainage
12 747km²
Discharge in basins
8,8m³/s
Mean precip.
1 001mm/an
Mean T°
9,4°C
Moisture idx
0,11
Max snow
12%
Mean runoff
675mm/an
Mean elev. (basins)
598m
Watersheds crossing here
Lakes (1, top by area)
Rivers / streams (2, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,5nW
Built-up
85,8%
Pesticides
0,1kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas10
IUCN Not Reported · 5IUCN IV · 5
Lac du Bourget et marais de Chautagne
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2023
55 km²
Lac du Bourget et marais de Chautagne
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 2022
55 km²
Forêts alluviales et lônes du Haut Rhône
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 2022
27 km²
Forêts alluviales et lônes du Haut Rhône
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2023
27 km²
Marais de chautagne
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy) · 2003
2 km²
Complete list10 protected areas
- Lac du Bourget - Marais de ChautagneWetland of International Importance (Ramsar Site)IUCN Not Reported200355 km²
- Lac du Bourget et marais de ChautagneSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported202355 km²
- Lac du Bourget et marais de ChautagneSpecial Protection Area (Birds Directive)IUCN Not Reported202255 km²
- Forêts alluviales et lônes du Haut RhôneSpecial Protection Area (Birds Directive)IUCN Not Reported202227 km²
- Forêts alluviales et lônes du Haut RhôneSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported202327 km²
- Marais de chautagneLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)IUCN IV20032 km²
- marais de chautagneLand acquired by a regional conservatory of natural areasIUCN IV19911 km²
- meandres de savieresLand acquired by a regional conservatory of natural areasIUCN IV20240 km²
- chautrand-les graviersLand acquired by a regional conservatory of natural areasIUCN IV20100 km²
- lones mollard nordLand acquired by a regional conservatory of natural areasIUCN IV20170 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN
France-specific data (Phase 2)
ZNIEFF, Natura 2000, INPN protected spaces, BNV-D pesticides, Naïades water quality, SAFRAN fine climate, BRGM lithology — Layer FR to load in Phase 2.