Ontologia

Commune · CHE

Arosa

Switzerland

ETPolar, tundra(61 %)

Species observed

1 448

Observations

8 966

Area

43,7km²

Ecological tissue

Sample of 33 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 Arosa : 19 espèces reliées par 92 interactions GloBI sur 5 types (connectance 14.6%, filtre Serrano α=0.2). 17 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
36
Interactions affichées
92
Connectance
0.146
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

1 448 distinct species · 8 966 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

8 966 obs · 1 cellules
Obs. / cellule
≥ 8 966
8 966–8 965
8 966–8 965
8 966–8 965
< 8 966

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

Climate

Mean T°

-0,6°C

Annual rain

1 828mm

Warmest m°

13,9°C

Coldest m°

-16,1°C

Elevation: 2 142 m on average (min 1 699 m, max 2 696 m)

Bioclimatic detailsExpert
Annual mean temp.
-0,6°C
Annual rain
1 828mm
Warmest month
13,9°C
Coldest month
-16,1°C
Mean alt.
2 142m
Min
1 699m
Max
2 696m
Std. dev.
274m
Köppen-Geiger (dominant)
ETPolar, tundra(61 %)Polar

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

Soil & lithology

pH H₂O

5,4

Org. C

60,7g/kg

Clay

18,3%

Sand

42,4%

Silt

39,3%

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

Dominant lithology: suGLiMaggregated to Plessur

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,4
Org. C
88,0g/kg
Clay
19,0%
Sand
41,7%
Silt
39,3%
5–15 cm
pH H₂O
5,4
Org. C
58,9g/kg
Clay
18,3%
Sand
42,1%
Silt
39,6%
15–30 cm
pH H₂O
5,5
Org. C
35,2g/kg
Clay
17,5%
Sand
43,4%
Silt
39,0%

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

Land cover

Forest11.9%
Crops0.2%
Built-up0.3%
Bare soil16.9%
Other (grassland, water…)70.7%

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

Hydrology2 basins · 0 lakes · 2 rivers

Hydrology metrics for this exact territory

Stream length here

10,2km

Basins crossed

2

Max stream order

2

Max drainage

4 871km²

Discharge in basins

4,2m³/s

Mean precip.

1 270mm/an

Mean T°

4,1°C

Moisture idx

0,51

Max snow

49%

Mean runoff

1 102mm/an

Mean elev. (basins)

1 496m

Watersheds crossing here

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

Human pressure

Pop. density

0hab/km²

Night light

0,4nW

Built-up

30,8%

Pesticides

3,0kg/km²

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

Protected areas6

IUCN Not Assigned · 3IUCN IV · 2IUCN Ia · 1

Schanfigg

IUCN Not Assigned

Forest Reserves · 2023

8 km²

Unter Prätschsee

IUCN IV

Federal Inventory of Fenlands of National Importance · 1994

0 km²

Schafwald

IUCN Not Assigned

Forest Reserves · 2023

0 km²

Schwarzsee bei Arosa

IUCN Ia

Federal Inventory of Raised and Transitional Mires of National Importance · 1991

0 km²

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