Ontologia

Commune · CHE

Randa

Switzerland

ETPolar, tundra(70 %)

Species observed

2 877

Observations

45 108

Area

53,3km²

Ecological tissue

Sample of 22 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 Randa : 17 espèces + 5 bulles famille, 26 interactions GloBI documentées sur 4 types (connectance 11.3%, filtre Serrano α=0.2). Les 5 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).

Espèces affichées
22
Interactions affichées
26
Connectance
0.113
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

2 877 distinct species · 45 108 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

45 108 obs · 6 cellules
Obs. / cellule
≥ 24 108
24 108–24 107
10 257–24 107
4 698–10 256
< 4 698

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

Climate

Mean T°

-4,6°C

Annual rain

1 472mm

Warmest m°

10,3°C

Coldest m°

-19,6°C

Elevation: 2 839 m on average (min 1 439 m, max 4 086 m)

Bioclimatic detailsExpert
Annual mean temp.
-4,6°C
Annual rain
1 472mm
Warmest month
10,3°C
Coldest month
-19,6°C
Mean alt.
2 839m
Min
1 439m
Max
4 086m
Std. dev.
725m
Köppen-Geiger (dominant)
ETPolar, tundra(70 %)Polar

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

Soil & lithology

pH H₂O

6,7

Org. C

59,9g/kg

Clay

16,8%

Sand

42,2%

Silt

41,0%

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

Dominant lithology: suGLiMaggregated to Visp

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,6
Org. C
90,5g/kg
Clay
16,5%
Sand
42,2%
Silt
41,4%
5–15 cm
pH H₂O
6,7
Org. C
54,1g/kg
Clay
16,6%
Sand
42,0%
Silt
41,4%
15–30 cm
pH H₂O
6,7
Org. C
34,9g/kg
Clay
17,3%
Sand
42,4%
Silt
40,3%

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

Land cover

Forest6.9%
Crops0.1%
Built-up0.1%
Bare soil20.7%
Other (grassland, water…)72.2%

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

Hydrology3 basins · 0 lakes · 5 rivers

Hydrology metrics for this exact territory

Stream length here

15,9km

Basins crossed

3

Max stream order

3

Max drainage

2 416km²

Discharge in basins

1,9m³/s

Mean precip.

1 931mm/an

Mean T°

-1,6°C

Moisture idx

0,78

Max snow

57%

Mean runoff

1 130mm/an

Mean elev. (basins)

2 631m

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

Human pressure

Pop. density

0hab/km²

Night light

0,2nW

Built-up

12,6%

Pesticides

22,1kg/km²

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

Protected areas3

IUCN IV · 3

Hohlichtgletscher

IUCN IV

Federal Inventory of Alluvial Zones of National Importance · 2001

2 km²

Schalubärg

IUCN IV

Federal Inventory of Dry Grasslands and Pastures of National Importance · 2017

0 km²

Gufer

IUCN IV

Federal Inventory of Dry Grasslands and Pastures of National Importance · 2010

0 km²

WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN