La Dordogne
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2015
57 km²
Commune · FRA
Marnac
France
CfbTemperate, no dry season, warm summer(69 %)
Species observed
1 062
Observations
8 069
Area
8,8km²
Ecological tissue
Sample of 35 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 Marnac : 31 espèces + 4 bulles famille, 85 interactions GloBI documentées sur 5 types (connectance 14.3%, filtre Serrano α=0.2). Les 4 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Espèces affichées
35
Interactions affichées
85
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
1 062 distinct species · 8 069 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
13,2°C
Annual rain
814mm
Warmest m°
26,1°C
Coldest m°
2,4°C
Elevation: 130 m on average (min 60 m, max 212 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
13,2°C
Annual rain
814mm
Warmest month
26,1°C
Coldest month
2,4°C
Mean alt.
130m
Min
60m
Max
212m
Std. dev.
37m
Köppen-Geiger (dominant)
CfbTemperate, no dry season, warm summer(69 %)Temperate
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
6,7
Org. C
35,6g/kg
Clay
27,6%
Sand
34,4%
Silt
38,0%
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
6,7
Org. C
59,1g/kg
Clay
26,0%
Sand
34,3%
Silt
39,6%
5–15 cm
pH H₂O
6,8
Org. C
28,6g/kg
Clay
26,5%
Sand
34,9%
Silt
38,6%
15–30 cm
pH H₂O
6,7
Org. C
19,1g/kg
Clay
30,2%
Sand
34,1%
Silt
35,7%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest42.2%
Crops27.0%
Built-up0.8%
Bare soil0.8%
Other (grassland, water…)29.3%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology1 basins · 0 lakes · 1 rivers
Hydrology metrics for this exact territory
Stream length here
1,1km
Basins crossed
1
Max stream order
5
Max drainage
9 575km²
Discharge in basins
5,3m³/s
Mean precip.
846mm/an
Mean T°
12,3°C
Moisture idx
-0,14
Max snow
2%
Mean runoff
465mm/an
Mean elev. (basins)
168m
Watersheds crossing here
Rivers / streams (1, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,0nW
Built-up
77,4%
Pesticides
5,6kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas3
IUCN IV · 2IUCN Not Reported · 1🌊 Marine · 1
Rivière Dordogne
IUCN IVBiotope Protection Order · 1991
16 km²
vallee de la dordogne - les borgnes
IUCN IVLand acquired by a regional conservatory of natural areas · 2022
0 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.