Ontologia

Commune · FRA

Assérac

France

CfbTemperate, no dry season, warm summer(100 %)

Species observed

2 228

Observations

34 699

Area

33,9km²

Ecological tissue

Sample of 36 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 Assérac : 27 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 100 interactions GloBI sur 6 types (connectance 15.0%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
37
Interactions affichées
100
Connectance
0.150
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

2 228 distinct species · 34 699 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

34 699 obs · 4 cellules
Obs. / cellule
≥ 12 451
12 451–12 450
12 225–12 450
12 225–12 224
< 12 225

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Climate

Mean T°

12,4°C

Annual rain

812mm

Warmest m°

21,6°C

Coldest m°

4,3°C

Elevation: 15 m on average (min 1 m, max 35 m)

Bioclimatic detailsExpert
Annual mean temp.
12,4°C
Annual rain
812mm
Warmest month
21,6°C
Coldest month
4,3°C
Mean alt.
15m
Min
1m
Max
35m
Std. dev.
9m
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

5,9

Org. C

56,6g/kg

Clay

19,0%

Sand

40,4%

Silt

40,6%

Average over 0-30 cm. Per-depth details in expert panel.

Dominant lithology: ssGLiMaggregated to Loire-Atlantique

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,9
Org. C
95,5g/kg
Clay
19,4%
Sand
39,7%
Silt
40,8%
5–15 cm
pH H₂O
5,9
Org. C
48,5g/kg
Clay
18,8%
Sand
39,7%
Silt
41,5%
15–30 cm
pH H₂O
5,9
Org. C
25,8g/kg
Clay
18,8%
Sand
41,7%
Silt
39,5%

SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)

Land cover

Forest22.6%
Crops39.2%
Built-up1.0%
Bare soil1.0%
Other (grassland, water…)36.2%

Copernicus Global Land Cover 100m (Buchhorn et al. 2020)

Hydrology2 basins · 2 lakes · 4 rivers

Hydrology metrics for this exact territory

Stream length here

10,8km

Lake surface here

1,11km²

Basins crossed

2

Max stream order

2

Max drainage

10 459km²

Discharge in basins

0,0m³/s

Mean precip.

814mm/an

Mean T°

11,7°C

Moisture idx

0,04

Max snow

6%

Mean runoff

527mm/an

Mean elev. (basins)

16m

Watersheds crossing here

Lakes (2, top by area)

Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10

Human pressure

Pop. density

0hab/km²

Built-up

100,2%

Pesticides

44,6kg/km²

GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)

Protected areas13

IUCN IV · 7IUCN Not Reported · 5IUCN V · 1🌊 Marine · 6

Brière

IUCN V

Regional Nature Park · 1970

566 km²

Baie de Vilaine

IUCN Not Reported

Special Protection Area (Birds Directive) · 2019

68 km²

Complete list

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.