La Cèze et ses gorges
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2016
36 km²
Commune · FRA
Orsan
France
CsaTemperate, dry summer, hot summer(100 %)
Species observed
1 015
Observations
12 163
Area
7,2km²
Ecological tissue
Sample of 34 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 Orsan : 30 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) + 4 bulles famille, 60 interactions GloBI documentées sur 5 types (connectance 10.7%, filtre Serrano α=0.2). Les 4 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Espèces affichées
34
Interactions affichées
60
Connectance
0.107
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
1 015 distinct species · 12 163 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
14,8°C
Annual rain
781mm
Warmest m°
30,4°C
Coldest m°
1,8°C
Elevation: 77 m on average (min 32 m, max 219 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
14,8°C
Annual rain
781mm
Warmest month
30,4°C
Coldest month
1,8°C
Mean alt.
77m
Min
32m
Max
219m
Std. dev.
50m
Köppen-Geiger (dominant)
CsaTemperate, dry summer, hot summer(100 %)Temperate
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
7,6
Org. C
34,5g/kg
Clay
19,6%
Sand
45,4%
Silt
35,0%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: scGLiMaggregated to Gard
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
7,5
Org. C
56,4g/kg
Clay
18,8%
Sand
46,1%
Silt
35,0%
5–15 cm
pH H₂O
7,6
Org. C
25,3g/kg
Clay
17,9%
Sand
46,3%
Silt
35,9%
15–30 cm
pH H₂O
7,6
Org. C
21,8g/kg
Clay
22,1%
Sand
43,8%
Silt
34,1%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest22.0%
Crops25.6%
Built-up2.1%
Bare soil3.1%
Other (grassland, water…)47.2%
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
3
Max drainage
1 357km²
Discharge in basins
0,1m³/s
Mean precip.
767mm/an
Mean T°
12,2°C
Moisture idx
-0,20
Max snow
6%
Mean runoff
486mm/an
Mean elev. (basins)
303m
Watersheds crossing here
Rivers / streams (1, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
1hab/km²
Night light
1,3nW
Built-up
206,4%
Pesticides
41,6kg/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.