Ontologia

Commune · ETH

Alfa

Ethiopia

AwTropical, savannah(61 %)

Species observed

29

Observations

3 217

Area

1 891,6km²

Ecological tissue

Sample of 6 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 Alfa : 6 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 3 interactions GloBI sur 2 types (connectance 20.0%, filtre Serrano α=0.2).

Espèces affichées
6
Interactions affichées
3
Connectance
0.200
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Species present

29 distinct species · 3 217 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

3 217 obs · 28 cellules
Obs. / cellule
≥ 2 441
6–2 440
2–5
2–1
< 2

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

Climate

Mean T°

21,0°C

Annual rain

2 241mm

Warmest m°

30,4°C

Coldest m°

14,2°C

Elevation: 1 623 m on average (min 822 m, max 2 233 m)

Bioclimatic detailsExpert
Annual mean temp.
21,0°C
Annual rain
2 241mm
Warmest month
30,4°C
Coldest month
14,2°C
Mean alt.
1 623m
Min
822m
Max
2 233m
Std. dev.
361m
Köppen-Geiger (dominant)
AwTropical, savannah(61 %)Tropical

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

28,8g/kg

Clay

44,8%

Sand

22,5%

Silt

32,7%

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

Dominant lithology: suGLiMaggregated to Semen Gondar

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,1
Org. C
42,1g/kg
Clay
41,8%
Sand
24,0%
Silt
34,2%
5–15 cm
pH H₂O
6,1
Org. C
25,8g/kg
Clay
44,2%
Sand
22,8%
Silt
33,0%
15–30 cm
pH H₂O
6,1
Org. C
18,6g/kg
Clay
48,4%
Sand
20,9%
Silt
30,8%

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

Land cover

Forest19.3%
Crops36.8%
Built-up0.2%
Bare soil0.5%
Other (grassland, water…)43.3%

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

Hydrology8 basins · 1 lakes · 3 rivers

Hydrology metrics for this exact territory

Stream length here

87,4km

Lake surface here

0,30km²

Basins crossed

8

Max stream order

3

Max drainage

2 008km²

Discharge in basins

23,5m³/s

Mean precip.

1 347mm/an

Mean T°

21,5°C

Moisture idx

-0,25

Mean runoff

374mm/an

Mean elev. (basins)

1 533m

Watersheds crossing here

Lakes (1, top by area)

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

Human pressure

Pop. density

1hab/km²

Built-up

18,5%

Pesticides

3,1kg/km²

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