Marais et tourbières des vallées de la Somme et de l’Avre
IUCN IVWetland of International Importance (Ramsar Site) · 2017
131 km²
Commune · FRA
Belloy-sur-Somme
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
2 183
Observations
57 644
Area
13,3km²
Ecological tissue
Sample of 45 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 Belloy-sur-Somme : 33 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 96 interactions GloBI sur 6 types (connectance 9.7%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
45
Interactions affichées
96
Connectance
0.097
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
2 183 distinct species · 57 644 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
10,6°C
Annual rain
752mm
Warmest m°
21,9°C
Coldest m°
1,1°C
Elevation: 66 m on average (min 17 m, max 101 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
10,6°C
Annual rain
752mm
Warmest month
21,9°C
Coldest month
1,1°C
Mean alt.
66m
Min
17m
Max
101m
Std. dev.
26m
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
6,8
Org. C
31,5g/kg
Clay
23,2%
Sand
15,1%
Silt
61,7%
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
6,7
Org. C
50,0g/kg
Clay
22,1%
Sand
15,1%
Silt
62,9%
5–15 cm
pH H₂O
6,9
Org. C
24,4g/kg
Clay
22,5%
Sand
14,4%
Silt
63,1%
15–30 cm
pH H₂O
6,8
Org. C
20,1g/kg
Clay
25,0%
Sand
16,0%
Silt
59,1%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest13.6%
Crops68.2%
Built-up0.5%
Bare soil0.6%
Other (grassland, water…)17.1%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology2 basins · 2 lakes · 1 rivers
Hydrology metrics for this exact territory
Stream length here
0,5km
Lake surface here
0,20km²
Basins crossed
2
Max stream order
5
Max drainage
4 883km²
Discharge in basins
2,0m³/s
Mean precip.
658mm/an
Mean T°
10,1°C
Moisture idx
-0,12
Max snow
8%
Mean runoff
488mm/an
Mean elev. (basins)
89m
Watersheds crossing here
Lakes (2, top by area)
Rivers / streams (1, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,4nW
Built-up
52,5%
Pesticides
47,9kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas7
IUCN IV · 5IUCN Not Reported · 2
Étangs et marais du bassin de la Somme
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 2007
52 km²
Basse vallée de la Somme de Pont-Rémy à Breilly
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2010
14 km²
Moyenne vallee de la somme
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy) · 2008
2 km²
le marais de belloy sur somme
IUCN IVLand acquired by a regional conservatory of natural areas · 2007
1 km²
le marais de la chaussee
IUCN IVLand acquired by a regional conservatory of natural areas · 2005
1 km²
Complete list7 protected areas
- Marais et tourbières des vallées de la Somme et de l’AvreWetland of International Importance (Ramsar Site)IUCN IV2017131 km²
- Étangs et marais du bassin de la SommeSpecial Protection Area (Birds Directive)IUCN Not Reported200752 km²
- Basse vallée de la Somme de Pont-Rémy à BreillySpecial Areas of Conservation (Habitats Directive)IUCN Not Reported201014 km²
- Moyenne vallee de la sommeLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)IUCN IV20082 km²
- le marais de belloy sur sommeLand acquired by a regional conservatory of natural areasIUCN IV20071 km²
- le marais de la chausseeLand acquired by a regional conservatory of natural areasIUCN IV20051 km²
- Marais Communal De La Chaussée-TirancourtBiotope Protection OrderIUCN IV19891 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.