Ontologia

County · USA

Alexander

United States

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

Species observed

2 154

Observations

75 136

Area

662,7km²

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 Alexander : 18 espèces reliées par 67 interactions GloBI sur 3 types (connectance 15.4%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
30
Interactions affichées
67
Connectance
0.154
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

2 154 distinct species · 75 136 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

75 136 obs · 20 cellules
Obs. / cellule
≥ 21 795
21 325–21 794
2 680–21 324
1 986–2 679
< 1 986

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

Climate

Mean T°

14,6°C

Annual rain

1 280mm

Warmest m°

31,3°C

Coldest m°

-2,0°C

Elevation: 117 m on average (min 88 m, max 216 m)

Bioclimatic detailsExpert
Annual mean temp.
14,6°C
Annual rain
1 280mm
Warmest month
31,3°C
Coldest month
-2,0°C
Mean alt.
117m
Min
88m
Max
216m
Std. dev.
29m
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

5,9

Org. C

22,7g/kg

Clay

28,1%

Sand

9,4%

Silt

62,6%

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

Dominant lithology: scGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,9
Org. C
45,4g/kg
Clay
27,7%
Sand
9,4%
Silt
62,9%
5–15 cm
pH H₂O
5,9
Org. C
14,9g/kg
Clay
27,6%
Sand
9,4%
Silt
62,9%
15–30 cm
pH H₂O
5,9
Org. C
7,8g/kg
Clay
28,9%
Sand
9,2%
Silt
61,9%

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

Land cover

Forest49.8%
Crops28.6%
Built-up0.2%
Bare soil0.7%
Other (grassland, water…)20.7%

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

Hydrology5 basins · 7 lakes · 6 rivers

Hydrology metrics for this exact territory

Stream length here

113,0km

Lake surface here

3,26km²

Basins crossed

5

Max stream order

9

Max drainage

1 815 893km²

Discharge in basins

8 711,5m³/s

Mean precip.

1 198mm/an

Mean T°

13,7°C

Moisture idx

0,01

Max snow

2%

Mean runoff

519mm/an

Mean elev. (basins)

129m

Watersheds crossing here

Lakes (7, top by area)

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

Human pressure

Pop. density

0hab/km²

Night light

0,6nW

Built-up

22,2%

Pesticides

12,0kg/km²

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

Protected areas14

IUCN V · 10IUCN Not Assigned · 2IUCN Not Reported · 1IUCN IV · 1
Complete list

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