Marais et tourbières des vallées de la Somme et de l’Avre
IUCN IVWetland of International Importance (Ramsar Site) · 2017
131 km²
Commune · FRA
Bray-sur-Somme
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
1 212
Observations
6 197
Area
17km²
Ecological tissue
Sample of 44 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 Bray-sur-Somme : 36 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 84 interactions GloBI sur 4 types (connectance 8.9%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
44
Interactions affichées
84
Connectance
0.089
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
1 212 distinct species · 6 197 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
10,5°C
Annual rain
751mm
Warmest m°
22,2°C
Coldest m°
0,9°C
Elevation: 81 m on average (min 42 m, max 110 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
10,5°C
Annual rain
751mm
Warmest month
22,2°C
Coldest month
0,9°C
Mean alt.
81m
Min
42m
Max
110m
Std. dev.
18m
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
7,3
Org. C
21,0g/kg
Clay
27,7%
Sand
9,9%
Silt
62,4%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: smGLiMaggregated to Somme
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
7,0
Org. C
33,6g/kg
Clay
25,9%
Sand
10,1%
Silt
64,0%
5–15 cm
pH H₂O
7,4
Org. C
15,8g/kg
Clay
28,2%
Sand
9,3%
Silt
62,5%
15–30 cm
pH H₂O
7,4
Org. C
13,5g/kg
Clay
29,1%
Sand
10,2%
Silt
60,7%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest6.0%
Crops79.4%
Built-up0.8%
Bare soil1.1%
Other (grassland, water…)12.7%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology2 basins · 2 lakes · 2 rivers
Hydrology metrics for this exact territory
Stream length here
3,3km
Lake surface here
0,15km²
Basins crossed
2
Max stream order
4
Max drainage
1 804km²
Discharge in basins
0,2m³/s
Mean precip.
653mm/an
Mean T°
9,9°C
Moisture idx
-0,15
Max snow
6%
Mean runoff
343mm/an
Mean elev. (basins)
90m
Watersheds crossing here
Lakes (2, 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
0,6nW
Built-up
81,8%
Pesticides
46,6kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas5
IUCN IV · 3IUCN Not Reported · 2
Étangs et marais du bassin de la Somme
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 2007
52 km²
Moyenne vallée de la Somme
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2008
18 km²
le marais communal de bray sur somme
IUCN IVLand acquired by a regional conservatory of natural areas · 2020
0 km²
le larris du gros mont
IUCN IVLand acquired by a regional conservatory of natural areas · 2020
0 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.