Ontologia

Commune · FRA

Bessans

France

ETPolar, tundra(67 %)

Species observed

3 109

Observations

121 805

Area

154,5km²

Ecological tissue

Sample of 17 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 Bessans : 14 espèces reliées par 20 interactions GloBI sur 2 types (connectance 11.7%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
19
Interactions affichées
20
Connectance
0.117
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

3 109 distinct species · 121 805 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

121 805 obs · 10 cellules
Obs. / cellule
≥ 27 148
27 148–27 147
23 174–27 147
11 587–23 173
< 11 587

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

Climate

Mean T°

-2,3°C

Annual rain

1 626mm

Warmest m°

12,1°C

Coldest m°

-16,1°C

Elevation: 2 645 m on average (min 1 799 m, max 3 320 m)

Bioclimatic detailsExpert
Annual mean temp.
-2,3°C
Annual rain
1 626mm
Warmest month
12,1°C
Coldest month
-16,1°C
Mean alt.
2 645m
Min
1 799m
Max
3 320m
Std. dev.
407m
Köppen-Geiger (dominant)
ETPolar, tundra(67 %)Polar

CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)

Soil & lithology

pH H₂O

6,1

Org. C

80,0g/kg

Clay

17,9%

Sand

41,0%

Silt

41,1%

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

Dominant lithology: scGLiMaggregated to Savoie

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,1
Org. C
119,3g/kg
Clay
17,1%
Sand
41,0%
Silt
41,9%
5–15 cm
pH H₂O
6,2
Org. C
67,3g/kg
Clay
17,2%
Sand
41,1%
Silt
41,7%
15–30 cm
pH H₂O
6,2
Org. C
53,4g/kg
Clay
19,4%
Sand
40,8%
Silt
39,8%

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

Land cover

Forest2.7%
Crops0.3%
Built-up0.1%
Bare soil29.1%
Other (grassland, water…)67.8%

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

Hydrology4 basins · 0 lakes · 9 rivers

Hydrology metrics for this exact territory

Stream length here

40,0km

Basins crossed

4

Max stream order

3

Max drainage

9 254km²

Discharge in basins

2,4m³/s

Mean precip.

1 457mm/an

Mean T°

2,7°C

Moisture idx

0,54

Max snow

42%

Mean runoff

527mm/an

Mean elev. (basins)

1 999m

Watersheds crossing here

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

Human pressure

Pop. density

0hab/km²

Night light

0,1nW

Built-up

7,9%

Pesticides

28,1kg/km²

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

Protected areas7

IUCN Not Reported · 5IUCN II · 1IUCN IV · 1

Massif de la Vanoise

IUCN Not Reported

Special Areas of Conservation (Habitats Directive) · 2008

540 km²

La Vanoise

IUCN Not Reported

Special Protection Area (Birds Directive) · 2018

536 km²

Vanoise

IUCN II

National Park - Core Area · 1963

531 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.