Ontologia

Commune · FRA

Hallu

France

CfbTemperate, no dry season, warm summer(100 %)

Species observed

751

Observations

41 734

Area

3,7km²

Ecological tissue

Sample of 41 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 Hallu : 33 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 87 interactions GloBI sur 6 types (connectance 10.1%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
42
Interactions affichées
87
Connectance
0.101
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

751 distinct species · 41 734 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

41 734 obs · 1 cellules
Obs. / cellule
≥ 41 734
41 734–41 733
41 734–41 733
41 734–41 733
< 41 734

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Climate

Mean T°

10,6°C

Annual rain

726mm

Warmest m°

22,4°C

Coldest m°

0,8°C

Elevation: 85 m on average (min 84 m, max 94 m)

Bioclimatic detailsExpert
Annual mean temp.
10,6°C
Annual rain
726mm
Warmest month
22,4°C
Coldest month
0,8°C
Mean alt.
85m
Min
84m
Max
94m
Std. dev.
3m
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

7,4

Org. C

20,4g/kg

Clay

28,8%

Sand

13,6%

Silt

57,6%

Average over 0-30 cm. Per-depth details in expert panel.

Dominant lithology: smGLiMaggregated to Somme

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,2
Org. C
32,0g/kg
Clay
27,0%
Sand
13,9%
Silt
59,1%
5–15 cm
pH H₂O
7,6
Org. C
13,6g/kg
Clay
30,5%
Sand
12,8%
Silt
56,7%
15–30 cm
pH H₂O
7,5
Org. C
15,5g/kg
Clay
28,9%
Sand
14,0%
Silt
57,1%

SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)

Land cover

Forest0.8%
Crops87.8%
Built-up0.9%
Bare soil0.8%
Other (grassland, water…)9.8%

Copernicus Global Land Cover 100m (Buchhorn et al. 2020)

Hydrology1 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

1,5km

Basins crossed

1

Max stream order

1

Max drainage

1 804km²

Discharge in basins

0,0m³/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 (1, ord ≥ 4)

Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10

Human pressure

Pop. density

0hab/km²

Night light

1,2nW

Built-up

85,9%

Pesticides

46,5kg/km²

GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)

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.