Vallée de la Dronne de Brantôme à sa confluence avec l'Isle
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2021
58 km²
Subdivision · FRA
Chalais
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
1 250
Observations
6 733
Area
144,7km²
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 Chalais : 31 espèces + 6 bulles famille, 110 interactions GloBI documentées sur 5 types (connectance 16.5%, filtre Serrano α=0.2). Les 6 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Espèces affichées
37
Interactions affichées
110
Connectance
0.165
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
1 250 distinct species · 6 733 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
13,0°C
Annual rain
854mm
Warmest m°
25,8°C
Coldest m°
2,4°C
Elevation: 84 m on average (min 34 m, max 137 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
13,0°C
Annual rain
854mm
Warmest month
25,8°C
Coldest month
2,4°C
Mean alt.
84m
Min
34m
Max
137m
Std. dev.
22m
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
6,9
Org. C
35,3g/kg
Clay
31,3%
Sand
29,6%
Silt
39,2%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: scGLiMaggregated to Charente
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
6,8
Org. C
58,9g/kg
Clay
29,5%
Sand
29,8%
Silt
40,6%
5–15 cm
pH H₂O
7,0
Org. C
28,3g/kg
Clay
31,8%
Sand
29,2%
Silt
39,0%
15–30 cm
pH H₂O
7,0
Org. C
18,7g/kg
Clay
32,4%
Sand
29,7%
Silt
37,9%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest24.0%
Crops46.8%
Built-up0.7%
Bare soil1.1%
Other (grassland, water…)27.4%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology2 basins · 0 lakes · 5 rivers
Hydrology metrics for this exact territory
Stream length here
46,9km
Basins crossed
2
Max stream order
4
Max drainage
2 790km²
Discharge in basins
2,4m³/s
Mean precip.
910mm/an
Mean T°
11,9°C
Moisture idx
-0,04
Max snow
3%
Mean runoff
518mm/an
Mean elev. (basins)
145m
Watersheds crossing here
Rivers / streams (5, 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
65,5%
Pesticides
42,4kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas4
IUCN Not Reported · 4
Landes de Touverac - Saint-Vallier
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2006
22 km²
Vallée de la Tude
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2006
16 km²
Côteaux du Montmorélien
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2009
3 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN
Sub-administrations11
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.