Ontologia

Subdivision · SEN

Syer

Senegal

BWhArid, desert, hot(100 %)

Species observed

162

Observations

1 411

Area

756,4km²

Ecological tissue

Sample of 29 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 Syer : 24 espèces reliées par 25 interactions GloBI sur 4 types (connectance 6.2%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
29
Interactions affichées
25
Connectance
0.062
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

162 distinct species · 1 411 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 411 obs · 18 cellules
Obs. / cellule
≥ 813
142–812
58–141
34–57
< 34

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

Climate

Mean T°

28,4°C

Annual rain

308mm

Warmest m°

39,1°C

Coldest m°

17,3°C

Elevation: 24 m on average (min 2 m, max 40 m)

Bioclimatic detailsExpert
Annual mean temp.
28,4°C
Annual rain
308mm
Warmest month
39,1°C
Coldest month
17,3°C
Mean alt.
24m
Min
2m
Max
40m
Std. dev.
10m
Köppen-Geiger (dominant)
BWhArid, desert, hot(100 %)Arid

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

Soil & lithology

pH H₂O

7,1

Org. C

5,1g/kg

Clay

16,3%

Sand

70,1%

Silt

13,6%

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

Dominant lithology: ssGLiMaggregated to Louga

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,1
Org. C
6,2g/kg
Clay
16,0%
Sand
70,4%
Silt
13,6%
5–15 cm
pH H₂O
7,1
Org. C
4,8g/kg
Clay
15,4%
Sand
70,8%
Silt
13,8%
15–30 cm
pH H₂O
7,0
Org. C
4,2g/kg
Clay
17,5%
Sand
69,1%
Silt
13,3%

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

Land cover

Forest4.1%
Crops8.0%
Built-up0.1%
Bare soil2.1%
Other (grassland, water…)85.8%

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

Hydrology7 basins · 3 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

57,5km

Lake surface here

20,09km²

Basins crossed

7

Max stream order

5

Max drainage

43 502km²

Discharge in basins

31,2m³/s

Mean precip.

316mm/an

Mean T°

26,8°C

Moisture idx

-0,84

Mean runoff

5mm/an

Mean elev. (basins)

30m

Watersheds crossing here

Lakes (3, top by area)

Rivers / streams (1, ord ≥ 4)

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

Human pressure

Pop. density

0hab/km²

Night light

0,0nW

Built-up

5,9%

Pesticides

1,7kg/km²

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