Ontologia

Commune · FRA

Préchac

France

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

Species observed

2 356

Observations

35 623

Area

64,2km²

Ecological tissue

Sample of 42 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 Préchac : 30 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 123 interactions GloBI sur 5 types (connectance 13.6%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
43
Interactions affichées
123
Connectance
0.136
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

2 356 distinct species · 35 623 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

35 623 obs · 6 cellules
Obs. / cellule
≥ 11 778
11 778–11 777
7 894–11 777
5 522–7 893
< 5 522

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

888mm

Warmest m°

27,0°C

Coldest m°

2,8°C

Elevation: 67 m on average (min 34 m, max 94 m)

Bioclimatic detailsExpert
Annual mean temp.
13,7°C
Annual rain
888mm
Warmest month
27,0°C
Coldest month
2,8°C
Mean alt.
67m
Min
34m
Max
94m
Std. dev.
13m
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

5,8

Org. C

33,4g/kg

Clay

19,0%

Sand

56,7%

Silt

24,3%

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
5,7
Org. C
51,2g/kg
Clay
19,5%
Sand
56,7%
Silt
23,8%
5–15 cm
pH H₂O
5,7
Org. C
31,4g/kg
Clay
17,5%
Sand
58,6%
Silt
24,0%
15–30 cm
pH H₂O
5,8
Org. C
17,6g/kg
Clay
20,1%
Sand
54,7%
Silt
25,2%

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

Land cover

Forest67.0%
Crops7.7%
Built-up0.3%
Bare soil0.9%
Other (grassland, water…)24.1%

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

Hydrology1 basins · 0 lakes · 5 rivers

Hydrology metrics for this exact territory

Stream length here

15,9km

Basins crossed

1

Max stream order

3

Max drainage

1 272km²

Discharge in basins

0,8m³/s

Mean precip.

933mm/an

Mean T°

12,4°C

Moisture idx

-0,05

Max snow

8%

Mean runoff

397mm/an

Mean elev. (basins)

100m

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

Human pressure

Pop. density

0hab/km²

Night light

0,2nW

Built-up

31,3%

Pesticides

23,1kg/km²

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

Protected areas2

IUCN V · 1IUCN Not Reported · 1🌊 Marine · 1

Vallée du Ciron

IUCN Not Reported

Special Areas of Conservation (Habitats Directive) · 2016

34 km²

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.