Vallée de la Sée
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2014
14 km²
Commune · FRA
Saint-Senier-sous-Avranches
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
337
Observations
7 520
Area
8,7km²
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-Senier-sous-Avranches : 25 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 66 interactions GloBI sur 4 types (connectance 11.1%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
35
Interactions affichées
66
Connectance
0.111
Patrimoniales
2
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
337 distinct species · 7 520 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
11,2°C
Annual rain
1 014mm
Warmest m°
20,8°C
Coldest m°
3,1°C
Elevation: 77 m on average (min 27 m, max 105 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
11,2°C
Annual rain
1 014mm
Warmest month
20,8°C
Coldest month
3,1°C
Mean alt.
77m
Min
27m
Max
105m
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
6,2
Org. C
39,5g/kg
Clay
22,7%
Sand
20,7%
Silt
56,6%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: ssGLiMaggregated to Manche
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
6,2
Org. C
63,2g/kg
Clay
21,7%
Sand
20,5%
Silt
57,8%
5–15 cm
pH H₂O
6,2
Org. C
33,9g/kg
Clay
22,9%
Sand
19,9%
Silt
57,2%
15–30 cm
pH H₂O
6,2
Org. C
21,5g/kg
Clay
23,4%
Sand
21,8%
Silt
54,8%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest19.2%
Crops40.8%
Built-up2.5%
Bare soil1.3%
Other (grassland, water…)36.2%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology2 basins · 0 lakes · 2 rivers
Hydrology metrics for this exact territory
Stream length here
1,5km
Basins crossed
2
Max stream order
3
Max drainage
1 046km²
Discharge in basins
0,2m³/s
Mean precip.
779mm/an
Mean T°
10,6°C
Moisture idx
0,05
Max snow
6%
Mean runoff
745mm/an
Mean elev. (basins)
144m
Watersheds crossing here
Rivers / streams (2, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
1hab/km²
Night light
0,8nW
Built-up
255,3%
Pesticides
33,2kg/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.