Ontologia

County · USA

DeKalb

United States

CfaTemperate, no dry season, hot summer(100 %)

Species observed

5 344

Observations

2 004 244

Area

700,4km²

Ecological tissue

Sample of 40 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 DeKalb : 28 espèces reliées par 94 interactions GloBI sur 4 types (connectance 11.5%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
41
Interactions affichées
94
Connectance
0.115
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

5 344 distinct species · 2 004 244 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 004 244 obs · 20 cellules
Obs. / cellule
≥ 367 924
263 065–367 923
138 874–263 064
69 900–138 873
< 69 900

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

Climate

Mean T°

16,3°C

Annual rain

1 331mm

Warmest m°

31,0°C

Coldest m°

1,8°C

Elevation: 282 m on average (min 216 m, max 336 m)

Bioclimatic detailsExpert
Annual mean temp.
16,3°C
Annual rain
1 331mm
Warmest month
31,0°C
Coldest month
1,8°C
Mean alt.
282m
Min
216m
Max
336m
Std. dev.
25m
Köppen-Geiger (dominant)
CfaTemperate, no dry season, hot summer(100 %)Temperate

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

Soil & lithology

pH H₂O

5,2

Org. C

23,4g/kg

Clay

21,1%

Sand

51,8%

Silt

27,1%

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

Dominant lithology: mtGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,2
Org. C
45,1g/kg
Clay
18,4%
Sand
53,7%
Silt
27,9%
5–15 cm
pH H₂O
5,2
Org. C
17,0g/kg
Clay
18,5%
Sand
53,8%
Silt
27,7%
15–30 cm
pH H₂O
5,2
Org. C
8,1g/kg
Clay
26,5%
Sand
47,9%
Silt
25,7%

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

Land cover

Forest34.6%
Crops0.7%
Built-up8.8%
Bare soil0.8%
Other (grassland, water…)55.2%

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

Hydrology3 basins · 6 lakes · 25 rivers

Hydrology metrics for this exact territory

Stream length here

191,3km

Lake surface here

2,19km²

Basins crossed

3

Max stream order

4

Max drainage

4 406km²

Discharge in basins

17,2m³/s

Mean precip.

1 311mm/an

Mean T°

15,8°C

Moisture idx

0,00

Mean runoff

508mm/an

Mean elev. (basins)

278m

Watersheds crossing here

Lakes (6, top by area)

Rivers / streams (25, ord ≥ 4)

13 more river segments

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

Human pressure

Pop. density

8hab/km²

Night light

22,5nW

Built-up

875,8%

Pesticides

1,2kg/km²

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

Protected areas46

IUCN V · 45IUCN III · 1
Complete list

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