Vallée de la Dronne de Brantôme à sa confluence avec l'Isle
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2021
58 km²
Commune · FRA
Vanxains
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
906
Observations
3 700
Area
35,6km²
Ecological tissue
Sample of 33 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 Vanxains : 27 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) + 6 bulles famille, 76 interactions GloBI documentées sur 5 types (connectance 14.4%, filtre Serrano α=0.2). Les 6 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Espèces affichées
33
Interactions affichées
76
Connectance
0.144
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
906 distinct species · 3 700 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
12,9°C
Annual rain
883mm
Warmest m°
25,6°C
Coldest m°
2,4°C
Elevation: 110 m on average (min 63 m, max 139 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
12,9°C
Annual rain
883mm
Warmest month
25,6°C
Coldest month
2,4°C
Mean alt.
110m
Min
63m
Max
139m
Std. dev.
18m
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
7,1
Org. C
32,2g/kg
Clay
27,9%
Sand
31,2%
Silt
40,9%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: smGLiMaggregated to Dordogne
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
6,9
Org. C
52,8g/kg
Clay
26,9%
Sand
31,1%
Silt
42,1%
5–15 cm
pH H₂O
7,1
Org. C
25,6g/kg
Clay
27,8%
Sand
30,8%
Silt
41,4%
15–30 cm
pH H₂O
7,2
Org. C
18,2g/kg
Clay
29,1%
Sand
31,6%
Silt
39,3%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest31.7%
Crops43.4%
Built-up0.5%
Bare soil0.8%
Other (grassland, water…)23.7%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology1 basins · 0 lakes · 3 rivers
Hydrology metrics for this exact territory
Stream length here
5,2km
Basins crossed
1
Max stream order
3
Max drainage
2 790km²
Discharge in basins
0,6m³/s
Mean precip.
911mm/an
Mean T°
11,9°C
Moisture idx
-0,04
Max snow
2%
Mean runoff
517mm/an
Mean elev. (basins)
147m
Watersheds crossing here
Rivers / streams (3, 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
51,7%
Pesticides
43,7kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas2
IUCN Not Reported · 2
Vallées de la Double
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2019
45 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.