Marais de Vilaine
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2016
109 km²
Commune · FRA
Saint-Nicolas-de-Redon
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
1 767
Observations
21 277
Area
22,3km²
Ecological tissue
Sample of 24 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 Saint-Nicolas-de-Redon : 17 espèces reliées par 69 interactions GloBI sur 5 types (connectance 23.0%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
25
Interactions affichées
69
Connectance
0.230
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
1 767 distinct species · 21 277 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
11,9°C
Annual rain
847mm
Warmest m°
23,1°C
Coldest m°
2,8°C
Elevation: 20 m on average (min 2 m, max 49 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
11,9°C
Annual rain
847mm
Warmest month
23,1°C
Coldest month
2,8°C
Mean alt.
20m
Min
2m
Max
49m
Std. dev.
11m
Köppen-Geiger (dominant)
CfbTemperate, no dry season, warm summer(100 %)Temperate
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
5,8
Org. C
45,4g/kg
Clay
22,2%
Sand
27,4%
Silt
50,4%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: ssGLiMaggregated to Loire-Atlantique
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
5,7
Org. C
64,4g/kg
Clay
20,6%
Sand
28,7%
Silt
50,7%
5–15 cm
pH H₂O
5,8
Org. C
40,8g/kg
Clay
23,5%
Sand
26,5%
Silt
50,1%
15–30 cm
pH H₂O
5,8
Org. C
30,9g/kg
Clay
22,6%
Sand
26,9%
Silt
50,4%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest22.6%
Crops38.4%
Built-up1.8%
Bare soil0.3%
Other (grassland, water…)37.0%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology3 basins · 1 lakes · 4 rivers
Hydrology metrics for this exact territory
Stream length here
12,4km
Lake surface here
0,07km²
Basins crossed
3
Max stream order
6
Max drainage
9 351km²
Discharge in basins
17,7m³/s
Mean precip.
758mm/an
Mean T°
11,3°C
Moisture idx
-0,06
Max snow
7%
Mean runoff
485mm/an
Mean elev. (basins)
48m
Watersheds crossing here
Lakes (1, top by area)
Rivers / streams (4, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
1hab/km²
Night light
1,5nW
Built-up
175,2%
Pesticides
43,7kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas1
IUCN Not Reported · 1🌊 Marine · 1
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.