Ontologia

County · USA

Walker

United States

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

Species observed

1 532

Observations

28 089

Area

2 083,7km²

Ecological tissue

Sample of 48 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 Walker : 37 espèces reliées par 99 interactions GloBI sur 4 types (connectance 8.4%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
49
Interactions affichées
99
Connectance
0.084
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

1 532 distinct species · 28 089 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

28 089 obs · 58 cellules
Obs. / cellule
≥ 5 465
1 210–5 464
305–1 209
166–304
< 166

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

Climate

Mean T°

17,0°C

Annual rain

1 497mm

Warmest m°

31,8°C

Coldest m°

2,3°C

Elevation: 143 m on average (min 86 m, max 227 m)

Bioclimatic detailsExpert
Annual mean temp.
17,0°C
Annual rain
1 497mm
Warmest month
31,8°C
Coldest month
2,3°C
Mean alt.
143m
Min
86m
Max
227m
Std. dev.
27m
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

5,3

Org. C

22,8g/kg

Clay

27,4%

Sand

27,8%

Silt

44,8%

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

Dominant lithology: suGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,3
Org. C
44,8g/kg
Clay
24,2%
Sand
29,5%
Silt
46,3%
5–15 cm
pH H₂O
5,3
Org. C
16,2g/kg
Clay
25,1%
Sand
29,0%
Silt
45,9%
15–30 cm
pH H₂O
5,3
Org. C
7,5g/kg
Clay
32,8%
Sand
24,9%
Silt
42,2%

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

Land cover

Forest75.2%
Crops1.8%
Built-up0.7%
Bare soil0.5%
Other (grassland, water…)21.9%

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

Hydrology13 basins · 5 lakes · 23 rivers

Hydrology metrics for this exact territory

Stream length here

473,3km

Lake surface here

6,28km²

Basins crossed

13

Max stream order

5

Max drainage

11 316km²

Discharge in basins

370,4m³/s

Mean precip.

1 473mm/an

Mean T°

15,8°C

Moisture idx

0,07

Max snow

2%

Mean runoff

666mm/an

Mean elev. (basins)

158m

Rivers / streams (23, ord ≥ 4)

11 more river segments

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

Human pressure

Pop. density

0hab/km²

Night light

1,3nW

Built-up

64,5%

Pesticides

3,6kg/km²

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

Protected areas3

IUCN Not Assigned · 2IUCN V · 1

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