Vallée de l'Authie
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2015
7 km²
Commune · FRA
Hem-Hardinval
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
891
Observations
9 054
Area
10,2km²
Ecological tissue
Sample of 32 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 Hem-Hardinval : 18 espèces reliées par 122 interactions GloBI sur 5 types (connectance 24.6%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
32
Interactions affichées
122
Connectance
0.246
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
891 distinct species · 9 054 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
10,3°C
Annual rain
824mm
Warmest m°
21,6°C
Coldest m°
0,9°C
Elevation: 99 m on average (min 68 m, max 150 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
10,3°C
Annual rain
824mm
Warmest month
21,6°C
Coldest month
0,9°C
Mean alt.
99m
Min
68m
Max
150m
Std. dev.
24m
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
7,0
Org. C
28,4g/kg
Clay
22,7%
Sand
11,0%
Silt
66,3%
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
6,8
Org. C
42,3g/kg
Clay
21,5%
Sand
10,6%
Silt
67,9%
5–15 cm
pH H₂O
7,1
Org. C
24,7g/kg
Clay
22,8%
Sand
10,2%
Silt
67,0%
15–30 cm
pH H₂O
7,1
Org. C
18,3g/kg
Clay
23,7%
Sand
12,3%
Silt
64,0%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest9.7%
Crops72.1%
Built-up0.4%
Bare soil0.7%
Other (grassland, water…)17.1%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology1 basins · 0 lakes · 1 rivers
Hydrology metrics for this exact territory
Stream length here
2,2km
Basins crossed
1
Max stream order
3
Max drainage
1 103km²
Discharge in basins
0,2m³/s
Mean precip.
662mm/an
Mean T°
10,1°C
Moisture idx
-0,06
Max snow
8%
Mean runoff
542mm/an
Mean elev. (basins)
92m
Watersheds crossing here
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
0,3nW
Built-up
40,2%
Pesticides
48,4kg/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.