Vallée du Né et ses principaux affluents
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2006
46 km²
Commune · FRA
Saint-Martial-sur-Né
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
844
Observations
3 469
Area
12,2km²
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 Saint-Martial-sur-Né : 26 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 131 interactions GloBI sur 5 types (connectance 20.8%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
36
Interactions affichées
131
Connectance
0.208
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
844 distinct species · 3 469 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
13,0°C
Annual rain
873mm
Warmest m°
25,6°C
Coldest m°
2,8°C
Elevation: 36 m on average (min 23 m, max 65 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
13,0°C
Annual rain
873mm
Warmest month
25,6°C
Coldest month
2,8°C
Mean alt.
36m
Min
23m
Max
65m
Std. dev.
10m
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
32,4g/kg
Clay
37,6%
Sand
23,6%
Silt
38,8%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: suGLiMaggregated to Charente-Maritime
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
7,1
Org. C
53,2g/kg
Clay
34,8%
Sand
24,8%
Silt
40,5%
5–15 cm
pH H₂O
7,2
Org. C
23,7g/kg
Clay
39,4%
Sand
21,9%
Silt
38,6%
15–30 cm
pH H₂O
7,2
Org. C
20,2g/kg
Clay
38,5%
Sand
24,2%
Silt
37,2%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest15.9%
Crops44.6%
Built-up0.8%
Bare soil2.4%
Other (grassland, water…)36.2%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology1 basins · 0 lakes · 2 rivers
Hydrology metrics for this exact territory
Stream length here
2,3km
Basins crossed
1
Max stream order
3
Max drainage
706km²
Discharge in basins
0,2m³/s
Mean precip.
878mm/an
Mean T°
12,2°C
Moisture idx
-0,06
Max snow
2%
Mean runoff
538mm/an
Mean elev. (basins)
82m
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
Night light
0,2nW
Built-up
83,7%
Pesticides
41,1kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas1
IUCN Not Reported · 1
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.