Ontologia

Commune · FRA

La Guerche-de-Bretagne

France

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

Species observed

603

Observations

2 340

Area

11,6km²

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 La Guerche-de-Bretagne : 22 espèces reliées par 102 interactions GloBI sur 4 types (connectance 18.2%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
34
Interactions affichées
102
Connectance
0.182
Patrimoniales
0
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Species present

603 distinct species · 2 340 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 340 obs · 1 cellules
Obs. / cellule
≥ 2 340
2 340–2 339
2 340–2 339
2 340–2 339
< 2 340

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

Climate

Mean T°

11,5°C

Annual rain

775mm

Warmest m°

22,9°C

Coldest m°

2,2°C

Elevation: 71 m on average (min 52 m, max 81 m)

Bioclimatic detailsExpert
Annual mean temp.
11,5°C
Annual rain
775mm
Warmest month
22,9°C
Coldest month
2,2°C
Mean alt.
71m
Min
52m
Max
81m
Std. dev.
6m
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

6,2

Org. C

31,2g/kg

Clay

25,0%

Sand

20,1%

Silt

54,9%

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

Dominant lithology: ssGLiMaggregated to Ille-et-Vilaine

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,1
Org. C
48,4g/kg
Clay
23,6%
Sand
21,5%
Silt
55,0%
5–15 cm
pH H₂O
6,2
Org. C
23,4g/kg
Clay
25,2%
Sand
20,0%
Silt
54,8%
15–30 cm
pH H₂O
6,2
Org. C
21,8g/kg
Clay
26,3%
Sand
19,0%
Silt
54,7%

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

Land cover

Forest6.8%
Crops46.9%
Built-up5.3%
Bare soil0.4%
Other (grassland, water…)40.6%

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

Hydrology1 basins · 0 lakes · 0 rivers

Hydrology metrics for this exact territory

Basins crossed

1

Max drainage

817km²

Discharge in basins

0,2m³/s

Mean precip.

729mm/an

Mean T°

11,1°C

Moisture idx

-0,11

Max snow

5%

Mean runoff

458mm/an

Mean elev. (basins)

69m

Watersheds crossing here

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

Human pressure

Pop. density

2hab/km²

Night light

2,7nW

Built-up

533,0%

Pesticides

45,7kg/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.