Vallée de la Cère et tributaires
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2009
30 km²
Commune · FRA
Calviac
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
1 784
Observations
13 146
Area
26,2km²
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 Calviac : 26 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 72 interactions GloBI sur 4 types (connectance 14.5%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
32
Interactions affichées
72
Connectance
0.145
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
1 784 distinct species · 13 146 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
10,4°C
Annual rain
1 623mm
Warmest m°
23,0°C
Coldest m°
-0,1°C
Elevation: 607 m on average (min 569 m, max 661 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
10,4°C
Annual rain
1 623mm
Warmest month
23,0°C
Coldest month
-0,1°C
Mean alt.
607m
Min
569m
Max
661m
Std. dev.
23m
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
5,9
Org. C
56,6g/kg
Clay
15,7%
Sand
46,9%
Silt
37,5%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: scGLiMaggregated to Lot
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
5,9
Org. C
100,9g/kg
Clay
15,8%
Sand
46,1%
Silt
38,2%
5–15 cm
pH H₂O
5,9
Org. C
43,7g/kg
Clay
15,7%
Sand
46,3%
Silt
37,9%
15–30 cm
pH H₂O
5,9
Org. C
25,1g/kg
Clay
15,6%
Sand
48,2%
Silt
36,3%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest44.6%
Crops27.1%
Built-up0.3%
Bare soil0.1%
Other (grassland, water…)27.9%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology2 basins · 0 lakes · 2 rivers
Hydrology metrics for this exact territory
Stream length here
10,0km
Basins crossed
2
Max stream order
2
Max drainage
1 108km²
Discharge in basins
0,5m³/s
Mean precip.
842mm/an
Mean T°
9,8°C
Moisture idx
-0,06
Max snow
8%
Mean runoff
615mm/an
Mean elev. (basins)
686m
Watersheds crossing here
Rivers / streams (2, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Built-up
25,0%
Pesticides
7,8kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas2
IUCN Not Reported · 2
Affluents de la Cère en Chataigneraie
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2019
2 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.