La Sienne Et Ses Affluents
IUCN IVBiotope Protection Order · 2017
18 km²
Commune · FRA
Le Gast
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
540
Observations
2 800
Area
12,7km²
Ecological tissue
Sample of 44 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 Le Gast : 36 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 90 interactions GloBI sur 6 types (connectance 9.5%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
44
Interactions affichées
90
Connectance
0.095
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
540 distinct species · 2 800 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
10,1°C
Annual rain
1 341mm
Warmest m°
20,4°C
Coldest m°
1,7°C
Elevation: 274 m on average (min 237 m, max 328 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
10,1°C
Annual rain
1 341mm
Warmest month
20,4°C
Coldest month
1,7°C
Mean alt.
274m
Min
237m
Max
328m
Std. dev.
19m
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
5,7
Org. C
41,4g/kg
Clay
23,5%
Sand
25,1%
Silt
51,4%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: ssGLiMaggregated to Calvados
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
5,7
Org. C
58,9g/kg
Clay
23,3%
Sand
25,0%
Silt
51,7%
5–15 cm
pH H₂O
5,7
Org. C
37,8g/kg
Clay
22,7%
Sand
25,3%
Silt
52,1%
15–30 cm
pH H₂O
5,8
Org. C
27,4g/kg
Clay
24,5%
Sand
25,0%
Silt
50,5%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest40.0%
Crops27.8%
Built-up0.5%
Bare soil0.1%
Other (grassland, water…)31.6%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology2 basins · 1 lakes · 2 rivers
Hydrology metrics for this exact territory
Stream length here
2,8km
Lake surface here
0,42km²
Basins crossed
2
Max stream order
1
Max drainage
764km²
Discharge in basins
0,3m³/s
Mean precip.
794mm/an
Mean T°
10,8°C
Moisture idx
0,09
Max snow
6%
Mean runoff
746mm/an
Mean elev. (basins)
122m
Watersheds crossing here
Lakes (1, top by area)
Rivers / streams (2, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Built-up
47,8%
Pesticides
10,8kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas1
IUCN IV · 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.