Ontologia

Commune · FRA

Saint-Jean-sur-Erve

France

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

Species observed

1 707

Observations

31 536

Area

25,3km²

Ecological tissue

Sample of 32 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 Saint-Jean-sur-Erve : 21 espèces reliées par 87 interactions GloBI sur 6 types (connectance 16.5%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
33
Interactions affichées
87
Connectance
0.165
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

1 707 distinct species · 31 536 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

31 536 obs · 4 cellules
Obs. / cellule
≥ 17 488
17 488–17 487
7 050–17 487
7 050–7 049
< 7 050

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

Climate

Mean T°

11,3°C

Annual rain

796mm

Warmest m°

23,1°C

Coldest m°

1,8°C

Elevation: 94 m on average (min 74 m, max 112 m)

Bioclimatic detailsExpert
Annual mean temp.
11,3°C
Annual rain
796mm
Warmest month
23,1°C
Coldest month
1,8°C
Mean alt.
94m
Min
74m
Max
112m
Std. dev.
11m
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

5,9

Org. C

34,3g/kg

Clay

22,6%

Sand

21,8%

Silt

55,6%

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
5,8
Org. C
55,3g/kg
Clay
21,0%
Sand
22,0%
Silt
57,0%
5–15 cm
pH H₂O
5,9
Org. C
28,5g/kg
Clay
22,2%
Sand
20,8%
Silt
57,0%
15–30 cm
pH H₂O
5,9
Org. C
19,1g/kg
Clay
24,6%
Sand
22,5%
Silt
52,9%

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

Land cover

Forest8.8%
Crops60.6%
Built-up0.5%
Bare soil0.5%
Other (grassland, water…)29.6%

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

Hydrology2 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

4,4km

Basins crossed

2

Max stream order

3

Max drainage

7 981km²

Discharge in basins

0,3m³/s

Mean precip.

732mm/an

Mean T°

10,7°C

Moisture idx

-0,12

Max snow

5%

Mean runoff

257mm/an

Mean elev. (basins)

111m

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

0,0nW

Built-up

54,2%

Pesticides

44,3kg/km²

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

Protected areas1

IUCN IV · 1

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.