Marais de Braud-et-Saint-Louis et de Saint-Ciers-sur-Gironde
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2014
109 km²
Commune · FRA
Mazion
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
1 525
Observations
17 038
Area
3,8km²
Ecological tissue
Sample of 39 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 Mazion : 29 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 122 interactions GloBI sur 6 types (connectance 14.9%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
41
Interactions affichées
122
Connectance
0.149
Patrimoniales
3
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
1 525 distinct species · 17 038 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
13,5°C
Annual rain
878mm
Warmest m°
25,7°C
Coldest m°
3,4°C
Elevation: 22 m on average (min 16 m, max 29 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
13,5°C
Annual rain
878mm
Warmest month
25,7°C
Coldest month
3,4°C
Mean alt.
22m
Min
16m
Max
29m
Std. dev.
5m
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
6,9
Org. C
30,2g/kg
Clay
26,8%
Sand
38,1%
Silt
35,1%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: suGLiMaggregated to Gironde
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
6,8
Org. C
48,8g/kg
Clay
25,9%
Sand
39,1%
Silt
35,0%
5–15 cm
pH H₂O
6,9
Org. C
21,7g/kg
Clay
27,2%
Sand
37,7%
Silt
35,0%
15–30 cm
pH H₂O
6,9
Org. C
20,1g/kg
Clay
27,4%
Sand
37,4%
Silt
35,2%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest17.9%
Crops24.2%
Built-up1.9%
Bare soil2.0%
Other (grassland, water…)54.0%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology1 basins · 0 lakes · 0 rivers
Hydrology metrics for this exact territory
Basins crossed
1
Max drainage
2 220km²
Discharge in basins
0,0m³/s
Mean precip.
870mm/an
Mean T°
12,6°C
Moisture idx
-0,01
Max snow
4%
Mean runoff
529mm/an
Mean elev. (basins)
23m
Watersheds crossing here
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
1hab/km²
Night light
1,9nW
Built-up
192,2%
Pesticides
45,6kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas1
IUCN Not Reported · 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.