Vallée de la Loire de Nantes aux Ponts-de-Cé et ses annexes
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2015
165 km²
Commune · FRA
La Possonnière
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
1 848
Observations
22 105
Area
18,8km²
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 La Possonnière : 28 espèces + 5 bulles famille, 51 interactions GloBI documentées sur 4 types (connectance 9.7%, filtre Serrano α=0.2). Les 5 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Espèces affichées
33
Interactions affichées
51
Connectance
0.097
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
1 848 distinct species · 22 105 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
12,0°C
Annual rain
674mm
Warmest m°
24,1°C
Coldest m°
2,3°C
Elevation: 37 m on average (min 14 m, max 62 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
12,0°C
Annual rain
674mm
Warmest month
24,1°C
Coldest month
2,3°C
Mean alt.
37m
Min
14m
Max
62m
Std. dev.
15m
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
6,2
Org. C
27,4g/kg
Clay
21,8%
Sand
37,2%
Silt
41,0%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: ssGLiMaggregated to Maine-et-Loire
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
6,2
Org. C
45,1g/kg
Clay
19,2%
Sand
38,7%
Silt
42,2%
5–15 cm
pH H₂O
6,3
Org. C
20,7g/kg
Clay
22,4%
Sand
36,5%
Silt
41,0%
15–30 cm
pH H₂O
6,3
Org. C
16,3g/kg
Clay
23,6%
Sand
36,5%
Silt
39,8%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest13.1%
Crops46.1%
Built-up2.0%
Bare soil1.1%
Other (grassland, water…)37.8%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology2 basins · 0 lakes · 3 rivers
Hydrology metrics for this exact territory
Stream length here
7,1km
Basins crossed
2
Max stream order
7
Max drainage
111 742km²
Discharge in basins
116,6m³/s
Mean precip.
669mm/an
Mean T°
11,5°C
Moisture idx
-0,23
Max snow
5%
Mean runoff
247mm/an
Mean elev. (basins)
52m
Watersheds crossing here
Rivers / streams (3, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
1hab/km²
Night light
0,1nW
Built-up
195,6%
Pesticides
43,6kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas2
IUCN Not Reported · 2
Vallée de la Loire de Nantes aux Ponts-de-Cé et ses annexes
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 2019
157 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.