Ontologia

Commune · FRA

Bierné

France

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

Species observed

569

Observations

3 582

Area

23,9km²

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 Bierné : 29 espèces + 5 bulles famille, 78 interactions GloBI documentées sur 1 type (connectance 13.9%, filtre Serrano α=0.2). Les 5 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).

Espèces affichées
34
Interactions affichées
78
Connectance
0.139
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

569 distinct species · 3 582 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

3 582 obs · 1 cellules
Obs. / cellule
≥ 3 582
3 582–3 581
3 582–3 581
3 582–3 581
< 3 582

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

Climate

Mean T°

11,6°C

Annual rain

781mm

Warmest m°

23,4°C

Coldest m°

2,0°C

Elevation: 80 m on average (min 67 m, max 90 m)

Bioclimatic detailsExpert
Annual mean temp.
11,6°C
Annual rain
781mm
Warmest month
23,4°C
Coldest month
2,0°C
Mean alt.
80m
Min
67m
Max
90m
Std. dev.
5m
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

28,7g/kg

Clay

21,9%

Sand

33,1%

Silt

45,0%

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

Dominant lithology: ssGLiMaggregated to Mayenne

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,2
Org. C
47,1g/kg
Clay
19,2%
Sand
34,9%
Silt
45,9%
5–15 cm
pH H₂O
6,3
Org. C
20,9g/kg
Clay
21,8%
Sand
33,0%
Silt
45,2%
15–30 cm
pH H₂O
6,3
Org. C
18,0g/kg
Clay
24,9%
Sand
31,3%
Silt
43,8%

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

Land cover

Forest5.8%
Crops69.5%
Built-up0.6%
Bare soil0.4%
Other (grassland, water…)23.7%

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

Hydrology2 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

3,9km

Basins crossed

2

Max stream order

1

Max drainage

7 981km²

Discharge in basins

1,6m³/s

Mean precip.

703mm/an

Mean T°

11,1°C

Moisture idx

-0,16

Max snow

5%

Mean runoff

264mm/an

Mean elev. (basins)

78m

Watersheds crossing here

Rivers / streams (1, ord ≥ 4)

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

Human pressure

Pop. density

0hab/km²

Night light

0,1nW

Built-up

64,3%

Pesticides

44,0kg/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.