Ontologia

Commune · FRA

Valeyrac

France

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

Species observed

871

Observations

2 659

Area

12,9km²

Ecological tissue

Sample of 34 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 Valeyrac : 28 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) + 6 bulles famille, 56 interactions GloBI documentées sur 5 types (connectance 10.0%, filtre Serrano α=0.2). Les 6 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).

Espèces affichées
34
Interactions affichées
56
Connectance
0.100
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

871 distinct species · 2 659 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 659 obs · 1 cellules
Obs. / cellule
≥ 2 659
2 659–2 658
2 659–2 658
2 659–2 658
< 2 659

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

Climate

Mean T°

13,7°C

Annual rain

864mm

Warmest m°

25,7°C

Coldest m°

3,9°C

Elevation: 5 m on average (min -4 m, max 9 m)

Bioclimatic detailsExpert
Annual mean temp.
13,7°C
Annual rain
864mm
Warmest month
25,7°C
Coldest month
3,9°C
Mean alt.
5m
Min
-4m
Max
9m
Std. dev.
3m
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

6,7

Org. C

43,3g/kg

Clay

34,2%

Sand

30,3%

Silt

35,5%

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

Dominant lithology: suGLiMaggregated to Gironde

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,7
Org. C
72,0g/kg
Clay
31,8%
Sand
31,7%
Silt
36,5%
5–15 cm
pH H₂O
6,7
Org. C
33,1g/kg
Clay
36,1%
Sand
28,1%
Silt
35,7%
15–30 cm
pH H₂O
6,7
Org. C
24,7g/kg
Clay
34,6%
Sand
31,3%
Silt
34,2%

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

Land cover

Forest21.8%
Crops28.5%
Built-up0.7%
Bare soil1.9%
Other (grassland, water…)47.1%

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

Hydrology1 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

0,3km

Basins crossed

1

Max stream order

1

Max drainage

1 548km²

Discharge in basins

0,1m³/s

Mean precip.

943mm/an

Mean T°

12,8°C

Moisture idx

0,04

Max snow

6%

Mean runoff

501mm/an

Mean elev. (basins)

16m

Watersheds crossing here

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

Human pressure

Pop. density

0hab/km²

Night light

1,1nW

Built-up

67,0%

Pesticides

43,3kg/km²

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

Protected areas7

IUCN Not Reported · 4IUCN V · 2IUCN IV · 1🌊 Marine · 5

Médoc

IUCN V

Regional Nature Park · 2019

2 388 km²

Marais du Bas Médoc

IUCN Not Reported

Special Areas of Conservation (Habitats Directive) · 2015

147 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.