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
Berson
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
1 336
Observations
15 553
Area
17,6km²
Ecological tissue
Sample of 38 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 Berson : 28 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 131 interactions GloBI sur 5 types (connectance 17.7%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
39
Interactions affichées
131
Connectance
0.177
Patrimoniales
2
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
1 336 distinct species · 15 553 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
13,4°C
Annual rain
916mm
Warmest m°
25,6°C
Coldest m°
3,2°C
Elevation: 53 m on average (min 32 m, max 76 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
13,4°C
Annual rain
916mm
Warmest month
25,6°C
Coldest month
3,2°C
Mean alt.
53m
Min
32m
Max
76m
Std. dev.
13m
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
6,6
Org. C
32,5g/kg
Clay
23,8%
Sand
43,3%
Silt
32,9%
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
6,5
Org. C
54,7g/kg
Clay
22,8%
Sand
43,6%
Silt
33,5%
5–15 cm
pH H₂O
6,6
Org. C
24,3g/kg
Clay
23,9%
Sand
42,9%
Silt
33,3%
15–30 cm
pH H₂O
6,6
Org. C
18,4g/kg
Clay
24,6%
Sand
43,5%
Silt
31,9%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest24.7%
Crops26.0%
Built-up1.4%
Bare soil1.8%
Other (grassland, water…)46.1%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology2 basins · 0 lakes · 1 rivers
Hydrology metrics for this exact territory
Stream length here
0,9km
Basins crossed
2
Max stream order
1
Max drainage
23 784km²
Discharge in basins
4,5m³/s
Mean precip.
881mm/an
Mean T°
12,6°C
Moisture idx
-0,03
Max snow
4%
Mean runoff
521mm/an
Mean elev. (basins)
27m
Watersheds crossing here
Rivers / streams (1, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
1hab/km²
Night light
0,9nW
Built-up
134,9%
Pesticides
45,8kg/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.