Marais et tourbières des vallées de la Somme et de l’Avre
IUCN IVWetland of International Importance (Ramsar Site) · 2017
131 km²
Commune · FRA
Voyennes
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
1 133
Observations
7 239
Area
9km²
Ecological tissue
Sample of 43 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 Voyennes : 35 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 92 interactions GloBI sur 6 types (connectance 9.7%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
44
Interactions affichées
92
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
1 133 distinct species · 7 239 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
10,7°C
Annual rain
704mm
Warmest m°
22,6°C
Coldest m°
0,9°C
Elevation: 65 m on average (min 61 m, max 74 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
10,7°C
Annual rain
704mm
Warmest month
22,6°C
Coldest month
0,9°C
Mean alt.
65m
Min
61m
Max
74m
Std. dev.
4m
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
19,3g/kg
Clay
27,9%
Sand
16,8%
Silt
55,4%
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
30,5g/kg
Clay
26,6%
Sand
16,7%
Silt
56,7%
5–15 cm
pH H₂O
7,4
Org. C
14,1g/kg
Clay
29,2%
Sand
15,9%
Silt
54,9%
15–30 cm
pH H₂O
7,4
Org. C
13,3g/kg
Clay
27,7%
Sand
17,8%
Silt
54,5%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest11.2%
Crops72.0%
Built-up1.0%
Bare soil0.9%
Other (grassland, water…)14.9%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology1 basins · 0 lakes · 3 rivers
Hydrology metrics for this exact territory
Stream length here
3,6km
Basins crossed
1
Max stream order
4
Max drainage
1 804km²
Discharge in basins
0,1m³/s
Mean precip.
652mm/an
Mean T°
9,9°C
Moisture idx
-0,15
Max snow
5%
Mean runoff
337mm/an
Mean elev. (basins)
89m
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
0,8nW
Built-up
98,3%
Pesticides
46,9kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas1
IUCN IV · 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.