Ontologia

Commune · FRA

Alzon

France

CsbTemperate, dry summer, warm summer(55 %)

Species observed

1 510

Observations

7 540

Area

28,7km²

Ecological tissue

Sample of 37 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 Alzon : 34 espèces + 3 bulles famille, 60 interactions GloBI documentées sur 6 types (connectance 9.0%, filtre Serrano α=0.2). Les 3 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).

Espèces affichées
37
Interactions affichées
60
Connectance
0.090
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

1 510 distinct species · 7 540 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

7 542 obs · 1 cellules
Obs. / cellule
≥ 7 542
7 542–7 541
7 542–7 541
7 542–7 541
< 7 542

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

Climate

Mean T°

10,1°C

Annual rain

1 291mm

Warmest m°

24,0°C

Coldest m°

-1,0°C

Elevation: 778 m on average (min 531 m, max 1 257 m)

Bioclimatic detailsExpert
Annual mean temp.
10,1°C
Annual rain
1 291mm
Warmest month
24,0°C
Coldest month
-1,0°C
Mean alt.
778m
Min
531m
Max
1 257m
Std. dev.
118m
Köppen-Geiger (dominant)
CsbTemperate, dry summer, warm summer(55 %)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

45,4g/kg

Clay

30,0%

Sand

28,3%

Silt

41,7%

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

Dominant lithology: scGLiMaggregated to Gard

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,7
Org. C
71,7g/kg
Clay
29,4%
Sand
28,8%
Silt
41,8%
5–15 cm
pH H₂O
6,8
Org. C
38,7g/kg
Clay
29,5%
Sand
28,4%
Silt
42,1%
15–30 cm
pH H₂O
6,8
Org. C
26,0g/kg
Clay
31,0%
Sand
27,7%
Silt
41,3%

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

Land cover

Forest61.0%
Crops15.5%
Built-up0.1%
Bare soil0.5%
Other (grassland, water…)22.9%

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

Hydrology1 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

9,6km

Basins crossed

1

Max stream order

2

Max drainage

2 621km²

Discharge in basins

0,7m³/s

Mean precip.

734mm/an

Mean T°

12,5°C

Moisture idx

-0,24

Max snow

4%

Mean runoff

650mm/an

Mean elev. (basins)

368m

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

Built-up

13,9%

Pesticides

44,9kg/km²

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

Protected areas11

IUCN Not Reported · 7IUCN V · 2IUCN II · 1IUCN Ia · 1

Cévennes

IUCN II

National Park - Core Area · 1970

938 km²

Les Cévennes

IUCN Not Reported

Special Protection Area (Birds Directive) · 2020

915 km²

Complete list

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.