Grands Causses
IUCN VRegional Nature Park · 1995
3 807 km²
Commune · FRA
Viala-du-Tarn
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
2 430
Observations
26 572
Area
38km²
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 Viala-du-Tarn : 22 espèces reliées par 80 interactions GloBI sur 6 types (connectance 14.3%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
34
Interactions affichées
80
Connectance
0.143
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
2 430 distinct species · 26 572 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
10,6°C
Annual rain
1 070mm
Warmest m°
24,1°C
Coldest m°
-0,2°C
Elevation: 619 m on average (min 411 m, max 926 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
10,6°C
Annual rain
1 070mm
Warmest month
24,1°C
Coldest month
-0,2°C
Mean alt.
619m
Min
411m
Max
926m
Std. dev.
127m
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
6,6
Org. C
44,8g/kg
Clay
26,8%
Sand
34,0%
Silt
39,3%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: scGLiMaggregated to Aveyron
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
6,5
Org. C
73,3g/kg
Clay
25,7%
Sand
34,3%
Silt
40,1%
5–15 cm
pH H₂O
6,6
Org. C
36,7g/kg
Clay
25,8%
Sand
34,0%
Silt
40,2%
15–30 cm
pH H₂O
6,6
Org. C
24,5g/kg
Clay
28,8%
Sand
33,6%
Silt
37,5%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest35.9%
Crops25.6%
Built-up0.3%
Bare soil0.8%
Other (grassland, water…)37.5%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology1 basins · 1 lakes · 4 rivers
Hydrology metrics for this exact territory
Stream length here
13,4km
Lake surface here
0,11km²
Basins crossed
1
Max stream order
4
Max drainage
2 756km²
Discharge in basins
2,9m³/s
Mean precip.
761mm/an
Mean T°
11,3°C
Moisture idx
-0,20
Max snow
3%
Mean runoff
534mm/an
Mean elev. (basins)
666m
Watersheds crossing here
Lakes (1, top by area)
Rivers / streams (4, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,1nW
Built-up
29,0%
Pesticides
29,5kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas2
IUCN V · 1IUCN Not Reported · 1
Vallée du Tarn (de Brousse jusqu'aux gorges)
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2007
37 km²
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.