Marais et tourbières des vallées de la Somme et de l’Avre
IUCN IVWetland of International Importance (Ramsar Site) · 2017
131 km²
Commune · FRA
Braches
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
1 305
Observations
13 552
Area
7,1km²
Ecological tissue
Sample of 36 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 Braches : 25 espèces reliées par 136 interactions GloBI sur 5 types (connectance 21.6%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
36
Interactions affichées
136
Connectance
0.216
Patrimoniales
0
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
1 305 distinct species · 13 552 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
10,6°C
Annual rain
677mm
Warmest m°
22,4°C
Coldest m°
1,0°C
Elevation: 77 m on average (min 46 m, max 105 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
10,6°C
Annual rain
677mm
Warmest month
22,4°C
Coldest month
1,0°C
Mean alt.
77m
Min
46m
Max
105m
Std. dev.
17m
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
26,0g/kg
Clay
28,2%
Sand
14,3%
Silt
57,4%
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
41,3g/kg
Clay
26,3%
Sand
14,7%
Silt
59,0%
5–15 cm
pH H₂O
7,4
Org. C
18,0g/kg
Clay
28,4%
Sand
14,0%
Silt
57,6%
15–30 cm
pH H₂O
7,4
Org. C
18,5g/kg
Clay
30,1%
Sand
14,2%
Silt
55,7%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest16.3%
Crops69.9%
Built-up0.3%
Bare soil0.6%
Other (grassland, water…)12.8%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology1 basins · 0 lakes · 3 rivers
Hydrology metrics for this exact territory
Stream length here
4,8km
Basins crossed
1
Max stream order
4
Max drainage
1 277km²
Discharge in basins
0,1m³/s
Mean precip.
655mm/an
Mean T°
10,1°C
Moisture idx
-0,15
Max snow
6%
Mean runoff
374mm/an
Mean elev. (basins)
100m
Watersheds crossing here
Rivers / streams (3, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,2nW
Built-up
32,5%
Pesticides
46,3kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas2
IUCN IV · 1IUCN Not Reported · 1
Tourbières et marais de l'Avre
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2008
3 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.