Ontologia

Commune · FRA

Birac

France

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

Species observed

1 202

Observations

13 890

Area

11,7km²

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 Birac : 22 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 130 interactions GloBI sur 5 types (connectance 20.6%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
36
Interactions affichées
130
Connectance
0.206
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

1 202 distinct species · 13 890 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

13 890 obs · 3 cellules
Obs. / cellule
≥ 6 190
6 190–6 189
6 190–6 189
4 395–6 189
< 4 395

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

Climate

Mean T°

12,7°C

Annual rain

884mm

Warmest m°

25,5°C

Coldest m°

2,3°C

Elevation: 82 m on average (min 59 m, max 115 m)

Bioclimatic detailsExpert
Annual mean temp.
12,7°C
Annual rain
884mm
Warmest month
25,5°C
Coldest month
2,3°C
Mean alt.
82m
Min
59m
Max
115m
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

7,2

Org. C

32,9g/kg

Clay

35,2%

Sand

19,9%

Silt

44,9%

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

Dominant lithology: scGLiMaggregated to Charente

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,0
Org. C
56,8g/kg
Clay
33,4%
Sand
20,4%
Silt
46,2%
5–15 cm
pH H₂O
7,2
Org. C
24,6g/kg
Clay
37,0%
Sand
18,4%
Silt
44,6%
15–30 cm
pH H₂O
7,3
Org. C
17,2g/kg
Clay
35,3%
Sand
21,0%
Silt
43,7%

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

Land cover

Forest13.5%
Crops46.6%
Built-up0.7%
Bare soil4.4%
Other (grassland, water…)34.7%

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

Hydrology2 basins · 0 lakes · 0 rivers

Hydrology metrics for this exact territory

Basins crossed

2

Max drainage

5 486km²

Discharge in basins

0,4m³/s

Mean precip.

859mm/an

Mean T°

12,1°C

Moisture idx

-0,07

Max snow

2%

Mean runoff

535mm/an

Mean elev. (basins)

82m

Watersheds crossing here

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

Human pressure

Pop. density

0hab/km²

Night light

0,4nW

Built-up

68,3%

Pesticides

41,4kg/km²

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

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.