Ontologia

Commune · ITA

Roisan

Italy

DfbCold, no dry season, warm summer(64 %)

Species observed

1 481

Observations

7 224

Area

14,6km²

Ecological tissue

Sample of 28 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 Roisan : 14 espèces reliées par 103 interactions GloBI sur 5 types (connectance 23.7%, filtre Serrano α=0.2). 16 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
30
Interactions affichées
103
Connectance
0.237
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

1 481 distinct species · 7 224 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

7 224 obs · 4 cellules
Obs. / cellule
≥ 3 789
3 789–3 788
1 874–3 788
1 874–1 873
< 1 874

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

Climate

Mean T°

5,3°C

Annual rain

951mm

Warmest m°

19,9°C

Coldest m°

-9,1°C

Elevation: 1 371 m on average (min 758 m, max 2 339 m)

Bioclimatic detailsExpert
Annual mean temp.
5,3°C
Annual rain
951mm
Warmest month
19,9°C
Coldest month
-9,1°C
Mean alt.
1 371m
Min
758m
Max
2 339m
Std. dev.
385m
Köppen-Geiger (dominant)
DfbCold, no dry season, warm summer(64 %)Cold

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

Soil & lithology

pH H₂O

6,3

Org. C

68,4g/kg

Clay

20,8%

Sand

37,5%

Silt

41,7%

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

Dominant lithology: mtGLiMaggregated to Aosta

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,2
Org. C
104,6g/kg
Clay
20,4%
Sand
37,5%
Silt
42,0%
5–15 cm
pH H₂O
6,3
Org. C
58,7g/kg
Clay
19,9%
Sand
38,1%
Silt
42,1%
15–30 cm
pH H₂O
6,3
Org. C
41,8g/kg
Clay
22,2%
Sand
37,0%
Silt
40,9%

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

Land cover

Forest57.5%
Crops1.1%
Built-up0.5%
Bare soil4.4%
Other (grassland, water…)36.4%

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

Hydrology1 basins · 0 lakes · 4 rivers

Hydrology metrics for this exact territory

Stream length here

3,4km

Basins crossed

1

Max stream order

4

Max drainage

455km²

Discharge in basins

0,4m³/s

Mean precip.

1 675mm/an

Mean T°

1,0°C

Moisture idx

0,67

Max snow

44%

Mean runoff

911mm/an

Mean elev. (basins)

2 231m

Watersheds crossing here

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

Human pressure

Pop. density

0hab/km²

Night light

2,1nW

Built-up

49,7%

Pesticides

65,5kg/km²

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