Marais de Vilaine
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2016
109 km²
Commune · FRA
Massérac
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
1 507
Observations
39 873
Area
18,3km²
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 Massérac : 20 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 112 interactions GloBI sur 6 types (connectance 20.0%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
34
Interactions affichées
112
Connectance
0.200
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
1 507 distinct species · 39 873 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
11,9°C
Annual rain
822mm
Warmest m°
23,3°C
Coldest m°
2,6°C
Elevation: 13 m on average (min 5 m, max 39 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
11,9°C
Annual rain
822mm
Warmest month
23,3°C
Coldest month
2,6°C
Mean alt.
13m
Min
5m
Max
39m
Std. dev.
9m
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
5,9
Org. C
42,4g/kg
Clay
22,1%
Sand
28,4%
Silt
49,5%
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
5,9
Org. C
67,2g/kg
Clay
20,0%
Sand
29,7%
Silt
50,3%
5–15 cm
pH H₂O
5,9
Org. C
35,4g/kg
Clay
23,0%
Sand
27,7%
Silt
49,3%
15–30 cm
pH H₂O
5,9
Org. C
24,7g/kg
Clay
23,3%
Sand
27,9%
Silt
48,8%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest14.4%
Crops55.4%
Built-up0.5%
Bare soil0.6%
Other (grassland, water…)29.1%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology1 basins · 2 lakes · 3 rivers
Hydrology metrics for this exact territory
Stream length here
9,1km
Lake surface here
0,62km²
Basins crossed
1
Max stream order
5
Max drainage
5 676km²
Discharge in basins
0,6m³/s
Mean precip.
744mm/an
Mean T°
11,2°C
Moisture idx
-0,09
Max snow
5%
Mean runoff
463mm/an
Mean elev. (basins)
59m
Watersheds crossing here
Lakes (2, top by area)
Rivers / streams (3, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Built-up
49,4%
Pesticides
44,7kg/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.